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A.cpp
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72 lines (63 loc) · 1.77 KB
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#include <bits/stdc++.h>
#define int long long
#define FOR(i,a,b) for(int i=(a),_b=(b); i<=_b; ++i)
#define FORD(i,a,b) for(int i=(a),_b=(b); i>=_b; --i)
#define REP(i,a) for(int i=0,_a=(a); i < _a; ++i)
#define DEBUG(X) { cout << #X << " = " << (X) << endl; }
#define PR(A,n) { cout << #A << " = "; FOR(_,1,n) cout << A[_] << ' '; cout << endl; }
#define PR0(A,n) { cout << #A << " = "; REP(_,n) cout << A[_] << ' '; cout << endl; }
#define sqr(x) ((x) * (x))
#define ll long long
#define __builtin_popcount __builtin_popcountll
#define SZ(x) ((int) (x).size())
using namespace std;
double safe_sqrt(double x) {
return sqrt(max((double)0.0,x));
}
int GI(ll& x) {
return scanf("%lld", &x);
}
int ndigit(int n) {
if (n == 0) return 1;
int res = 0;
while (n > 0) {
++res;
n /= 7;
}
return res;
}
#define TWO(X) (1LL<<(X))
#define CONTAIN(S,X) (S & TWO(X))
#undef int
int main() {
#define int long long
ios :: sync_with_stdio(0); cin.tie(0);
cout << (fixed) << setprecision(9);
int n, m;
while (cin >> n >> m) {
int l = ndigit(n-1) + ndigit(m-1);
if (l > 7) {
cout << 0 << endl;
continue;
}
int res = 0;
REP(i,n) REP(j,m) {
bool ok = true;
int has = 0;
int u = i;
REP(turn,ndigit(n-1)) {
if (CONTAIN(has,u%7)) ok = false;
has |= TWO(u % 7);
u /= 7;
}
u = j;
REP(turn,ndigit(m-1)) {
if (CONTAIN(has,u%7)) ok = false;
has |= TWO(u % 7);
u /= 7;
}
if (ok) ++res;
}
cout << res << endl;
}
}