func_code_string: #include <bits/stdc++.h>   using namespace std;   int f[20];   bool ischange[300000];   int main() {     memset(ischange, 0, sizeof ischange);     int n;     scanf( %d , &n);     string a;     cin >> a;     for (int i = 1; i <= 9; i++) {       scanf( %d , &f[i]);     }     int ff = 0;     for (int i = 0; i < a.length(); i++) {       if (ff == 1) break;       int now = a[i] -  0 ;       int change = f[now];       if (change > now) {         ff = 1;         while (f[a[i] -  0 ] >= a[i] -  0  && i < a.length()) {           ischange[i] = 1;           i++;         }       }       if (ff == 1) break;     }     for (int i = 0; i < a.length(); i++) {       if (ischange[i])         cout << f[a[i] -  0 ];       else         cout << a[i];     }     return 0;   }   