diff --git "a/Gwonwoo-Nam/week_08/BOJ_11053_\352\260\200\354\236\245\352\270\264\354\246\235\352\260\200\355\225\230\353\212\224\353\266\200\353\266\204\354\210\230\354\227\264.java" "b/Gwonwoo-Nam/season1/BOJ_11053_\352\260\200\354\236\245\352\270\264\354\246\235\352\260\200\355\225\230\353\212\224\353\266\200\353\266\204\354\210\230\354\227\264.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_08/BOJ_11053_\352\260\200\354\236\245\352\270\264\354\246\235\352\260\200\355\225\230\353\212\224\353\266\200\353\266\204\354\210\230\354\227\264.java"
rename to "Gwonwoo-Nam/season1/BOJ_11053_\352\260\200\354\236\245\352\270\264\354\246\235\352\260\200\355\225\230\353\212\224\353\266\200\353\266\204\354\210\230\354\227\264.java"
diff --git "a/Gwonwoo-Nam/week_08/BOJ_1149_RGB\352\261\260\353\246\254.java" "b/Gwonwoo-Nam/season1/BOJ_1149_RGB\352\261\260\353\246\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_08/BOJ_1149_RGB\352\261\260\353\246\254.java"
rename to "Gwonwoo-Nam/season1/BOJ_1149_RGB\352\261\260\353\246\254.java"
diff --git "a/Gwonwoo-Nam/week_08/BOJ_11660_\352\265\254\352\260\204\355\225\251\352\265\254\355\225\230\352\270\2605.java" "b/Gwonwoo-Nam/season1/BOJ_11660_\352\265\254\352\260\204\355\225\251\352\265\254\355\225\230\352\270\2605.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_08/BOJ_11660_\352\265\254\352\260\204\355\225\251\352\265\254\355\225\230\352\270\2605.java"
rename to "Gwonwoo-Nam/season1/BOJ_11660_\352\265\254\352\260\204\355\225\251\352\265\254\355\225\230\352\270\2605.java"
diff --git "a/Gwonwoo-Nam/week_08/BOJ_12865_\355\217\211\353\262\224\355\225\234\353\260\260\353\202\255.java" "b/Gwonwoo-Nam/season1/BOJ_12865_\355\217\211\353\262\224\355\225\234\353\260\260\353\202\255.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_08/BOJ_12865_\355\217\211\353\262\224\355\225\234\353\260\260\353\202\255.java"
rename to "Gwonwoo-Nam/season1/BOJ_12865_\355\217\211\353\262\224\355\225\234\353\260\260\353\202\255.java"
diff --git "a/Gwonwoo-Nam/week_08/BOJ_9095_123\353\215\224\355\225\230\352\270\260.java" "b/Gwonwoo-Nam/season1/BOJ_9095_123\353\215\224\355\225\230\352\270\260.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_08/BOJ_9095_123\353\215\224\355\225\230\352\270\260.java"
rename to "Gwonwoo-Nam/season1/BOJ_9095_123\353\215\224\355\225\230\352\270\260.java"
diff --git "a/Gwonwoo-Nam/Week_02/BOJ_10814_\353\202\230\354\235\264\354\210\234\354\240\225\353\240\254.java" "b/Gwonwoo-Nam/season1/Week_02/BOJ_10814_\353\202\230\354\235\264\354\210\234\354\240\225\353\240\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_02/BOJ_10814_\353\202\230\354\235\264\354\210\234\354\240\225\353\240\254.java"
rename to "Gwonwoo-Nam/season1/Week_02/BOJ_10814_\353\202\230\354\235\264\354\210\234\354\240\225\353\240\254.java"
diff --git "a/Gwonwoo-Nam/Week_02/BOJ_11650_\354\242\214\355\221\234\354\240\225\353\240\254\355\225\230\352\270\260.java" "b/Gwonwoo-Nam/season1/Week_02/BOJ_11650_\354\242\214\355\221\234\354\240\225\353\240\254\355\225\230\352\270\260.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_02/BOJ_11650_\354\242\214\355\221\234\354\240\225\353\240\254\355\225\230\352\270\260.java"
rename to "Gwonwoo-Nam/season1/Week_02/BOJ_11650_\354\242\214\355\221\234\354\240\225\353\240\254\355\225\230\352\270\260.java"
diff --git "a/Gwonwoo-Nam/Week_02/BOJ_1946_\354\213\240\354\236\205\354\202\254\354\233\220.java" "b/Gwonwoo-Nam/season1/Week_02/BOJ_1946_\354\213\240\354\236\205\354\202\254\354\233\220.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_02/BOJ_1946_\354\213\240\354\236\205\354\202\254\354\233\220.java"
rename to "Gwonwoo-Nam/season1/Week_02/BOJ_1946_\354\213\240\354\236\205\354\202\254\354\233\220.java"
diff --git "a/Gwonwoo-Nam/Week_02/BOJ_2752_\354\204\270\354\210\230\354\240\225\353\240\254.java" "b/Gwonwoo-Nam/season1/Week_02/BOJ_2752_\354\204\270\354\210\230\354\240\225\353\240\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_02/BOJ_2752_\354\204\270\354\210\230\354\240\225\353\240\254.java"
rename to "Gwonwoo-Nam/season1/Week_02/BOJ_2752_\354\204\270\354\210\230\354\240\225\353\240\254.java"
diff --git "a/Gwonwoo-Nam/Week_02/BOJ_5576_\354\275\230\355\205\214\354\212\244\355\212\270.java" "b/Gwonwoo-Nam/season1/Week_02/BOJ_5576_\354\275\230\355\205\214\354\212\244\355\212\270.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_02/BOJ_5576_\354\275\230\355\205\214\354\212\244\355\212\270.java"
rename to "Gwonwoo-Nam/season1/Week_02/BOJ_5576_\354\275\230\355\205\214\354\212\244\355\212\270.java"
diff --git "a/Gwonwoo-Nam/Week_03/BOJ_1072_\352\262\214\354\236\204.java" "b/Gwonwoo-Nam/season1/Week_03/BOJ_1072_\352\262\214\354\236\204.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/BOJ_1072_\352\262\214\354\236\204.java"
rename to "Gwonwoo-Nam/season1/Week_03/BOJ_1072_\352\262\214\354\236\204.java"
diff --git "a/Gwonwoo-Nam/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.java" "b/Gwonwoo-Nam/season1/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.java"
rename to "Gwonwoo-Nam/season1/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.java"
diff --git "a/Gwonwoo-Nam/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.java" "b/Gwonwoo-Nam/season1/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.java"
rename to "Gwonwoo-Nam/season1/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.java"
diff --git "a/Gwonwoo-Nam/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.java" "b/Gwonwoo-Nam/season1/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.java"
rename to "Gwonwoo-Nam/season1/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.java"
diff --git "a/Gwonwoo-Nam/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.java" "b/Gwonwoo-Nam/season1/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.java"
rename to "Gwonwoo-Nam/season1/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.java"
diff --git a/Gwonwoo-Nam/Week_03/README.md b/Gwonwoo-Nam/season1/Week_03/README.md
similarity index 100%
rename from Gwonwoo-Nam/Week_03/README.md
rename to Gwonwoo-Nam/season1/Week_03/README.md
diff --git "a/Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_1072_\352\262\214\354\236\204.class" "b/Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_1072_\352\262\214\354\236\204.class"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_1072_\352\262\214\354\236\204.class"
rename to "Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_1072_\352\262\214\354\236\204.class"
diff --git "a/Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.class" "b/Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.class"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.class"
rename to "Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_1920_\354\210\230\354\260\276\352\270\260.class"
diff --git "a/Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.class" "b/Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.class"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.class"
rename to "Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_2417_\354\240\225\354\210\230\354\240\234\352\263\261\352\267\274.class"
diff --git "a/Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.class" "b/Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.class"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.class"
rename to "Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_2805_\353\202\230\353\254\264\354\236\220\353\245\264\352\270\260.class"
diff --git "a/Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.class" "b/Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.class"
similarity index 100%
rename from "Gwonwoo-Nam/Week_03/out/production/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.class"
rename to "Gwonwoo-Nam/season1/Week_03/out/production/Week_03/BOJ_6236_\354\232\251\353\217\210\352\264\200\353\246\254.class"
diff --git "a/Gwonwoo-Nam/week_04/BOJ_11728_\353\260\260\354\227\264\355\225\251\354\271\230\352\270\260.java" "b/Gwonwoo-Nam/season1/week_04/BOJ_11728_\353\260\260\354\227\264\355\225\251\354\271\230\352\270\260.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_04/BOJ_11728_\353\260\260\354\227\264\355\225\251\354\271\230\352\270\260.java"
rename to "Gwonwoo-Nam/season1/week_04/BOJ_11728_\353\260\260\354\227\264\355\225\251\354\271\230\352\270\260.java"
diff --git "a/Gwonwoo-Nam/week_04/BOJ_1940_\354\243\274\353\252\275.java" "b/Gwonwoo-Nam/season1/week_04/BOJ_1940_\354\243\274\353\252\275.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_04/BOJ_1940_\354\243\274\353\252\275.java"
rename to "Gwonwoo-Nam/season1/week_04/BOJ_1940_\354\243\274\353\252\275.java"
diff --git "a/Gwonwoo-Nam/week_04/BOJ_2118_\353\221\220\352\260\234\354\235\230\355\203\221.java" "b/Gwonwoo-Nam/season1/week_04/BOJ_2118_\353\221\220\352\260\234\354\235\230\355\203\221.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_04/BOJ_2118_\353\221\220\352\260\234\354\235\230\355\203\221.java"
rename to "Gwonwoo-Nam/season1/week_04/BOJ_2118_\353\221\220\352\260\234\354\235\230\355\203\221.java"
diff --git "a/Gwonwoo-Nam/week_04/BOJ_2531_\355\232\214\354\240\204\354\264\210\353\260\245.java" "b/Gwonwoo-Nam/season1/week_04/BOJ_2531_\355\232\214\354\240\204\354\264\210\353\260\245.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_04/BOJ_2531_\355\232\214\354\240\204\354\264\210\353\260\245.java"
rename to "Gwonwoo-Nam/season1/week_04/BOJ_2531_\355\232\214\354\240\204\354\264\210\353\260\245.java"
diff --git "a/Gwonwoo-Nam/week_04/BOJ_3273_\353\221\220\354\210\230\354\235\230\355\225\251.java" "b/Gwonwoo-Nam/season1/week_04/BOJ_3273_\353\221\220\354\210\230\354\235\230\355\225\251.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_04/BOJ_3273_\353\221\220\354\210\230\354\235\230\355\225\251.java"
rename to "Gwonwoo-Nam/season1/week_04/BOJ_3273_\353\221\220\354\210\230\354\235\230\355\225\251.java"
diff --git a/Gwonwoo-Nam/week_04/README.md b/Gwonwoo-Nam/season1/week_04/README.md
similarity index 100%
rename from Gwonwoo-Nam/week_04/README.md
rename to Gwonwoo-Nam/season1/week_04/README.md
diff --git "a/Gwonwoo-Nam/week_05/BOJ_1012_\354\234\240\352\270\260\353\206\215\353\260\260\354\266\224.java" "b/Gwonwoo-Nam/season1/week_05/BOJ_1012_\354\234\240\352\270\260\353\206\215\353\260\260\354\266\224.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_05/BOJ_1012_\354\234\240\352\270\260\353\206\215\353\260\260\354\266\224.java"
rename to "Gwonwoo-Nam/season1/week_05/BOJ_1012_\354\234\240\352\270\260\353\206\215\353\260\260\354\266\224.java"
diff --git "a/Gwonwoo-Nam/week_05/BOJ_11724_\354\227\260\352\262\260\354\232\224\354\206\214\354\235\230\352\260\234\354\210\230.java" "b/Gwonwoo-Nam/season1/week_05/BOJ_11724_\354\227\260\352\262\260\354\232\224\354\206\214\354\235\230\352\260\234\354\210\230.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_05/BOJ_11724_\354\227\260\352\262\260\354\232\224\354\206\214\354\235\230\352\260\234\354\210\230.java"
rename to "Gwonwoo-Nam/season1/week_05/BOJ_11724_\354\227\260\352\262\260\354\232\224\354\206\214\354\235\230\352\260\234\354\210\230.java"
diff --git "a/Gwonwoo-Nam/week_05/BOJ_1260_DFS\354\231\200BFS.java" "b/Gwonwoo-Nam/season1/week_05/BOJ_1260_DFS\354\231\200BFS.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_05/BOJ_1260_DFS\354\231\200BFS.java"
rename to "Gwonwoo-Nam/season1/week_05/BOJ_1260_DFS\354\231\200BFS.java"
diff --git "a/Gwonwoo-Nam/week_05/BOJ_2606_\353\260\224\354\235\264\353\237\254\354\212\244.java" "b/Gwonwoo-Nam/season1/week_05/BOJ_2606_\353\260\224\354\235\264\353\237\254\354\212\244.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_05/BOJ_2606_\353\260\224\354\235\264\353\237\254\354\212\244.java"
rename to "Gwonwoo-Nam/season1/week_05/BOJ_2606_\353\260\224\354\235\264\353\237\254\354\212\244.java"
diff --git "a/Gwonwoo-Nam/week_05/BOJ_7576_\355\206\240\353\247\210\355\206\240.java" "b/Gwonwoo-Nam/season1/week_05/BOJ_7576_\355\206\240\353\247\210\355\206\240.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_05/BOJ_7576_\355\206\240\353\247\210\355\206\240.java"
rename to "Gwonwoo-Nam/season1/week_05/BOJ_7576_\355\206\240\353\247\210\355\206\240.java"
diff --git "a/Gwonwoo-Nam/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java" "b/Gwonwoo-Nam/season1/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java"
similarity index 91%
rename from "Gwonwoo-Nam/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java"
rename to "Gwonwoo-Nam/season1/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java"
index 686b30c..8a3773f 100644
--- "a/Gwonwoo-Nam/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java"
+++ "b/Gwonwoo-Nam/season1/week_06/BOJ_1991_\355\212\270\353\246\254\354\210\234\355\232\214.java"
@@ -41,35 +41,35 @@ public static void append(int index, String searchTarget, String[][] given, Stri
     }
 
     public static void postOrder(int index, String[] tree) {
-        if (tree[index] != null && !tree[index].equals(".")) {
-            if (tree[2*index] != null && !tree[2*index].equals(".")) {
+        if (tree[index] != null && !tree[index].equals("")) {
+            if (tree[2*index] != null && !tree[2*index].equals("")) {
                 postOrder(2*index, tree);
 
             }
-            if (tree[2*index+1] != null && !tree[2*index+1].equals(".")) {
+            if (tree[2*index+1] != null && !tree[2*index+1].equals("")) {
                 postOrder(2*index + 1, tree);
             }
             System.out.print(tree[index]);
         }
     }
     public static void preOrder(int index, String[] tree) {
-        if (tree[index] != null && !tree[index].equals(".")) {
+        if (tree[index] != null && !tree[index].equals("")) {
             System.out.print(tree[index]);
-            if (tree[2*index] != null && !tree[2*index].equals(".")) {
+            if (tree[2*index] != null && !tree[2*index].equals("")) {
                 preOrder(2*index, tree);
             }
-            if (tree[2*index+1] != null && !tree[2*index+1].equals(".")) {
+            if (tree[2*index+1] != null && !tree[2*index+1].equals("")) {
                 preOrder(2*index + 1, tree);
             }
         }
     }
     public static void inOrder(int index, String[] tree) {
-        if (tree[index] != null && !tree[index].equals(".")) {
-            if (tree[2*index] != null && !tree[2*index].equals(".")) {
+        if (tree[index] != null && !tree[index].equals("")) {
+            if (tree[2*index] != null && !tree[2*index].equals("")) {
                 inOrder(2*index, tree);
             }
             System.out.print(tree[index]);
-            if (tree[2*index+1] != null && !tree[2*index+1].equals(".")) {
+            if (tree[2*index+1] != null && !tree[2*index+1].equals("")) {
                 inOrder(2*index + 1, tree);
             }
         }
diff --git "a/Gwonwoo-Nam/week_06/BOJ_20364_\353\266\200\353\217\231\354\202\260\353\213\244\355\210\274.java" "b/Gwonwoo-Nam/season1/week_06/BOJ_20364_\353\266\200\353\217\231\354\202\260\353\213\244\355\210\274.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_06/BOJ_20364_\353\266\200\353\217\231\354\202\260\353\213\244\355\210\274.java"
rename to "Gwonwoo-Nam/season1/week_06/BOJ_20364_\353\266\200\353\217\231\354\202\260\353\213\244\355\210\274.java"
diff --git "a/Gwonwoo-Nam/week_06/BOJ_5369_\354\235\264\354\247\204\352\262\200\354\203\211\355\212\270\353\246\254.java" "b/Gwonwoo-Nam/season1/week_06/BOJ_5369_\354\235\264\354\247\204\352\262\200\354\203\211\355\212\270\353\246\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_06/BOJ_5369_\354\235\264\354\247\204\352\262\200\354\203\211\355\212\270\353\246\254.java"
rename to "Gwonwoo-Nam/season1/week_06/BOJ_5369_\354\235\264\354\247\204\352\262\200\354\203\211\355\212\270\353\246\254.java"
diff --git "a/Gwonwoo-Nam/week_06/BOJ_9372_\354\203\201\352\267\274\354\235\264\354\235\230\354\227\254\355\226\211.java" "b/Gwonwoo-Nam/season1/week_06/BOJ_9372_\354\203\201\352\267\274\354\235\264\354\235\230\354\227\254\355\226\211.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_06/BOJ_9372_\354\203\201\352\267\274\354\235\264\354\235\230\354\227\254\355\226\211.java"
rename to "Gwonwoo-Nam/season1/week_06/BOJ_9372_\354\203\201\352\267\274\354\235\264\354\235\230\354\227\254\355\226\211.java"
diff --git "a/Gwonwoo-Nam/week_06/BOJ_9934_\354\231\204\354\240\204\354\235\264\354\247\204\355\212\270\353\246\254.java" "b/Gwonwoo-Nam/season1/week_06/BOJ_9934_\354\231\204\354\240\204\354\235\264\354\247\204\355\212\270\353\246\254.java"
similarity index 100%
rename from "Gwonwoo-Nam/week_06/BOJ_9934_\354\231\204\354\240\204\354\235\264\354\247\204\355\212\270\353\246\254.java"
rename to "Gwonwoo-Nam/season1/week_06/BOJ_9934_\354\231\204\354\240\204\354\235\264\354\247\204\355\212\270\353\246\254.java"
diff --git "a/Gwonwoo-Nam/week_09/BOJ_11000_\352\260\225\354\235\230\354\213\244\353\260\260\354\240\225.py" "b/Gwonwoo-Nam/season1/week_09/BOJ_11000_\352\260\225\354\235\230\354\213\244\353\260\260\354\240\225.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_09/BOJ_11000_\352\260\225\354\235\230\354\213\244\353\260\260\354\240\225.py"
rename to "Gwonwoo-Nam/season1/week_09/BOJ_11000_\352\260\225\354\235\230\354\213\244\353\260\260\354\240\225.py"
diff --git a/Gwonwoo-Nam/week_09/BOJ_11399_ATM.py b/Gwonwoo-Nam/season1/week_09/BOJ_11399_ATM.py
similarity index 100%
rename from Gwonwoo-Nam/week_09/BOJ_11399_ATM.py
rename to Gwonwoo-Nam/season1/week_09/BOJ_11399_ATM.py
diff --git "a/Gwonwoo-Nam/week_09/BOJ_1931_\355\232\214\354\235\230\354\213\244\353\260\260\354\240\225.py" "b/Gwonwoo-Nam/season1/week_09/BOJ_1931_\355\232\214\354\235\230\354\213\244\353\260\260\354\240\225.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_09/BOJ_1931_\355\232\214\354\235\230\354\213\244\353\260\260\354\240\225.py"
rename to "Gwonwoo-Nam/season1/week_09/BOJ_1931_\355\232\214\354\235\230\354\213\244\353\260\260\354\240\225.py"
diff --git "a/Gwonwoo-Nam/week_09/BOJ_20115_\354\227\220\353\204\210\354\247\200\353\223\234\353\247\201\355\201\254.py" "b/Gwonwoo-Nam/season1/week_09/BOJ_20115_\354\227\220\353\204\210\354\247\200\353\223\234\353\247\201\355\201\254.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_09/BOJ_20115_\354\227\220\353\204\210\354\247\200\353\223\234\353\247\201\355\201\254.py"
rename to "Gwonwoo-Nam/season1/week_09/BOJ_20115_\354\227\220\353\204\210\354\247\200\353\223\234\353\247\201\355\201\254.py"
diff --git "a/Gwonwoo-Nam/week_09/BOJ_21314_\353\257\274\352\262\270\354\210\230.py" "b/Gwonwoo-Nam/season1/week_09/BOJ_21314_\353\257\274\352\262\270\354\210\230.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_09/BOJ_21314_\353\257\274\352\262\270\354\210\230.py"
rename to "Gwonwoo-Nam/season1/week_09/BOJ_21314_\353\257\274\352\262\270\354\210\230.py"
diff --git "a/Gwonwoo-Nam/week_10/\353\223\243\353\263\264\354\236\241.py" "b/Gwonwoo-Nam/season1/week_10/\353\223\243\353\263\264\354\236\241.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_10/\353\223\243\353\263\264\354\236\241.py"
rename to "Gwonwoo-Nam/season1/week_10/\353\223\243\353\263\264\354\236\241.py"
diff --git "a/Gwonwoo-Nam/week_10/\353\254\270\354\236\220\354\227\264\352\262\214\354\236\2042.py" "b/Gwonwoo-Nam/season1/week_10/\353\254\270\354\236\220\354\227\264\352\262\214\354\236\2042.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_10/\353\254\270\354\236\220\354\227\264\352\262\214\354\236\2042.py"
rename to "Gwonwoo-Nam/season1/week_10/\353\254\270\354\236\220\354\227\264\352\262\214\354\236\2042.py"
diff --git "a/Gwonwoo-Nam/week_10/\354\213\270\354\235\264\353\262\204\352\260\234\352\260\225\354\264\235\355\232\214.py" "b/Gwonwoo-Nam/season1/week_10/\354\213\270\354\235\264\353\262\204\352\260\234\352\260\225\354\264\235\355\232\214.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_10/\354\213\270\354\235\264\353\262\204\352\260\234\352\260\225\354\264\235\355\232\214.py"
rename to "Gwonwoo-Nam/season1/week_10/\354\213\270\354\235\264\353\262\204\352\260\234\352\260\225\354\264\235\355\232\214.py"
diff --git "a/Gwonwoo-Nam/week_10/\355\214\214\354\235\274\354\240\225\353\246\254.py" "b/Gwonwoo-Nam/season1/week_10/\355\214\214\354\235\274\354\240\225\353\246\254.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_10/\355\214\214\354\235\274\354\240\225\353\246\254.py"
rename to "Gwonwoo-Nam/season1/week_10/\355\214\214\354\235\274\354\240\225\353\246\254.py"
diff --git "a/Gwonwoo-Nam/week_10/\355\232\214\353\254\270.py" "b/Gwonwoo-Nam/season1/week_10/\355\232\214\353\254\270.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_10/\355\232\214\353\254\270.py"
rename to "Gwonwoo-Nam/season1/week_10/\355\232\214\353\254\270.py"
diff --git "a/Gwonwoo-Nam/week_23/BOJ_1713_\355\233\204\353\263\264\354\266\224\354\262\234.py" "b/Gwonwoo-Nam/season1/week_23/BOJ_1713_\355\233\204\353\263\264\354\266\224\354\262\234.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_23/BOJ_1713_\355\233\204\353\263\264\354\266\224\354\262\234.py"
rename to "Gwonwoo-Nam/season1/week_23/BOJ_1713_\355\233\204\353\263\264\354\266\224\354\262\234.py"
diff --git "a/Gwonwoo-Nam/week_23/BOJ_21610_\353\247\210\353\262\225\354\202\254 \354\203\201\354\226\264\354\231\200 \353\271\204\353\260\224\353\235\274\352\270\260.py" "b/Gwonwoo-Nam/season1/week_23/BOJ_21610_\353\247\210\353\262\225\354\202\254 \354\203\201\354\226\264\354\231\200 \353\271\204\353\260\224\353\235\274\352\270\260.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_23/BOJ_21610_\353\247\210\353\262\225\354\202\254 \354\203\201\354\226\264\354\231\200 \353\271\204\353\260\224\353\235\274\352\270\260.py"
rename to "Gwonwoo-Nam/season1/week_23/BOJ_21610_\353\247\210\353\262\225\354\202\254 \354\203\201\354\226\264\354\231\200 \353\271\204\353\260\224\353\235\274\352\270\260.py"
diff --git "a/Gwonwoo-Nam/week_23/BOJ_5212_\354\247\200\352\265\254\354\230\250\353\202\234\355\231\224.py" "b/Gwonwoo-Nam/season1/week_23/BOJ_5212_\354\247\200\352\265\254\354\230\250\353\202\234\355\231\224.py"
similarity index 100%
rename from "Gwonwoo-Nam/week_23/BOJ_5212_\354\247\200\352\265\254\354\230\250\353\202\234\355\231\224.py"
rename to "Gwonwoo-Nam/season1/week_23/BOJ_5212_\354\247\200\352\265\254\354\230\250\353\202\234\355\231\224.py"
diff --git "a/Gwonwoo-Nam/season2/_230809/\353\211\264\354\212\244\355\201\264\353\237\254\354\212\244\355\204\260\353\247\201.py" "b/Gwonwoo-Nam/season2/_230809/\353\211\264\354\212\244\355\201\264\353\237\254\354\212\244\355\204\260\353\247\201.py"
new file mode 100644
index 0000000..b58ab24
--- /dev/null
+++ "b/Gwonwoo-Nam/season2/_230809/\353\211\264\354\212\244\355\201\264\353\237\254\354\212\244\355\204\260\353\247\201.py"
@@ -0,0 +1,46 @@
+from collections import defaultdict
+import math
+
+
+def solution(str1, str2):
+    a = defaultdict(int)
+    b = defaultdict(int)
+    for i in range(len(str1) - 1):
+        st = str1[i:(i + 2)]
+        if st.isalpha():
+            a[st.lower()] += 1
+    for i in range(len(str2) - 1):
+        st = str2[i:(i + 2)]
+        if st.isalpha():
+            b[st.lower()] += 1
+
+    if len(b) == 0 and len(a) == 0:
+        return 65536
+
+    com = []
+    uni = []
+    # 합집합
+    # 교집합
+    for e in a.keys():
+        if e in b.keys():
+            # 교집합인 경우
+            for i in range(min(a[e], b[e])) :
+                com.append(e)
+            for i in range(max(a[e], b[e])) :
+                uni.append(e)
+        else:
+            # A에만 소속
+            for i in range(a[e]):
+                uni.append(e)
+    for e in b:
+        if e not in a:
+            # B에만 소속
+            for i in range(b[e]):
+                uni.append(e)
+    print(uni, com)
+
+    answer = 65536 * len(com) / len(uni)
+    return math.floor(answer)
+
+
+solution(	"aa1+aa2", "AAAA12")
diff --git "a/Gwonwoo-Nam/season2/_230809/\353\213\244\355\212\270\352\262\214\354\236\204.py" "b/Gwonwoo-Nam/season2/_230809/\353\213\244\355\212\270\352\262\214\354\236\204.py"
new file mode 100644
index 0000000..fae40a0
--- /dev/null
+++ "b/Gwonwoo-Nam/season2/_230809/\353\213\244\355\212\270\352\262\214\354\236\204.py"
@@ -0,0 +1,50 @@
+from collections import deque
+
+def solution(dartResult):
+    answer = 0
+
+
+    li = deque(dartResult)
+    maps = [[0 for i in range(3)] for j in range(3)]
+
+    i = 0
+
+    # maps[0][0] = 0~10, maps[0][1] = S, D, T, maps[0][2] = *, #, null
+    while li :
+        if li :
+            e = li.popleft();
+        if e.isdigit() :
+            if len(li) > 0 and li[0].isdigit() :
+                maps[i][0] = (int(e)*10 + int(li.popleft()))
+            else :
+                maps[i][0] = int(e)
+
+        if li :
+            if li[0] in ("S", "D", "T") :
+                maps[i][1] = li.popleft()
+        if li :
+            if li[0] in ("*", "#") :
+                maps[i][2] = li.popleft()
+        i+=1
+
+    for i in range(3) :
+
+        bonus = maps[i][1]
+        option = maps[i][2]
+
+        if bonus == "D" :
+            maps[i][0] *= maps[i][0]
+        elif bonus == "T" :
+            maps[i][0] = maps[i][0]*maps[i][0]*maps[i][0]
+        if option == "#" :
+            maps[i][0] *= -1
+        elif option == "*" :
+            maps[i][0] *= 2
+            if i>= 1 :
+                maps[i-1][0] *= 2
+
+    for i in range(3) :
+        answer += maps[i][0]
+
+
+    return answer
diff --git "a/Gwonwoo-Nam/season2/_230830/\354\212\244\355\213\260\354\273\244\353\252\250\354\234\274\352\270\2602.py" "b/Gwonwoo-Nam/season2/_230830/\354\212\244\355\213\260\354\273\244\353\252\250\354\234\274\352\270\2602.py"
new file mode 100644
index 0000000..14ab79c
--- /dev/null
+++ "b/Gwonwoo-Nam/season2/_230830/\354\212\244\355\213\260\354\273\244\353\252\250\354\234\274\352\270\2602.py"
@@ -0,0 +1,29 @@
+def solution(sticker):
+    answer = 0
+
+
+    if len(sticker) == 1 :
+        return sticker[0]
+    # 첫번째 스티커를 뜯는 경우와 뜯지 않는 경우로 나눈다.
+
+    # 뜯는 경우(마지막 인덱스를 뜯지 못한다.)
+    dp = [0 for i in range(len(sticker))]
+    dp[0] = sticker[0]
+    dp[1] = sticker[0]
+    for i in range(2, len(sticker) - 1) :
+        dp[i] = max(dp[i-1], dp[i-2] + sticker[i])
+
+    # 뜯지 않는 경우(마지막 인덱스를 뜯을 수 있다.)
+    dp2 = [0 for i in range(len(sticker))]
+    dp2[0] = 0
+    dp2[1] = sticker[1]
+    for i in range(2, len(sticker)) :
+        dp2[i] = max(dp2[i-1], dp2[i-2] + sticker[i])
+
+    for e in dp :
+        answer = max(answer, e)
+    for e in dp2 :
+        answer = max(answer, e)
+
+
+    return max(dp[len(sticker)-2], dp2[len(sticker)-1])
diff --git "a/Gwonwoo-Nam/season2/_230830/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.py" "b/Gwonwoo-Nam/season2/_230830/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.py"
new file mode 100644
index 0000000..ad34ba2
--- /dev/null
+++ "b/Gwonwoo-Nam/season2/_230830/\354\230\244\355\224\210\354\261\204\355\214\205\353\260\251.py"
@@ -0,0 +1,32 @@
+def solution(record):
+    answer = []
+
+    # user_id를 key로 가지는 dict
+
+    user_dict = {}
+    for e in record :
+        splits = e.split()
+        if len(splits) > 2 :
+            command, user_id, nick_name = splits
+        else :
+            command, user_id = splits
+
+        if command == "Enter" :
+            user_dict[user_id] = nick_name
+        elif command == "Change" :
+            user_dict[user_id] = nick_name
+
+    for e in record :
+        splits = e.split()
+        if len(splits) > 2 :
+            command, user_id, nick_name = splits
+        else :
+            command, user_id = splits
+
+        if command == "Enter" :
+            answer.append(user_dict[user_id] + "님이 들어왔습니다.")
+
+        elif command == "Leave" :
+            answer.append(user_dict[user_id] + "님이 나갔습니다.")
+
+    return answer