diff --git a/Rachitec Largest sum continuos subarray b/Rachitec Largest sum continuos subarray
new file mode 100644
index 000000000..1ea0d9c5f
--- /dev/null
+++ b/Rachitec Largest sum continuos subarray	
@@ -0,0 +1,11 @@
+def max_continuos_sum(a)
+   max_ending_sum = max_slice_sum =0 
+   n=a.length
+   for i in 0...n
+    max_ending_sum = [0,(max_ending_sum+a[i])].max
+    max_slice_sum = [max_slice_sum,max_ending_sum].max
+   end
+    return  max_slice_sum
+end
+
+max_continuos_sum([1,1,-1,2,3,4,-9,3,4,5,-6]) # => 13