func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = (1 << 30);   const long long llinf = (1ll << 60);   const double eps = (1e-10);   const int xx[8] = {1, 0, -1, 0, 1, -1, 1, -1};   const int yy[8] = {0, 1, 0, -1, -1, 1, -1, 1};   int main() {     int n;     scanf( %d , &n);     int cnt[10] = {0};     bool fl = true;     char input[4][4];     getchar();     for (int i = 0; i < 4; i++) {       for (int j = 0; j < 4; j++) {         char x;         scanf( %c , &x);         if (x ==  . ) continue;         cnt[x -  0 ]++;         if (cnt[x -  0 ] > (n * 2)) fl = false;       }       getchar();     }     if (fl)       cout <<  YES n ;     else       cout <<  NO n ;   }   