func_code_string: #include <bits/stdc++.h>   using namespace std;   long long mypow3(long long p, long long mod) {     long long rez = 1, x = 3;     while (p > 0) {       if (p % 2 == 1) rez = (rez * x) % mod;       x = (x * x) % mod;       p /= 2;     }     return rez;   }   int main() {     long long n, m, ans;     ios_base::sync_with_stdio(false);     cin >> n >> m;     ans = mypow3(n, m) - 1;     if (ans == -1) ans = m - 1;     cout << ans <<   n ;     return 0;   }   