func_code_string: #include <bits/stdc++.h>   long long n, md;   void rid(int n, int m) {     int i;     long long sol = 1, p = 1;     for (i = 0, p = n; i <= 30; i++) {       if ((m & (1 << i)) == (1 << i)) {         sol = (long long)sol * p;         sol = (long long)sol % md;       }       p = (long long)p * p;       p = (long long)p % md;     }     if (sol == 0)       sol = md - 1;     else       sol--;     printf( %I64d , sol);   }   int main() {     scanf( %I64d%I64d , &n, &md);     rid(3, n);   }   