func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1e5 + 10;   unsigned int dp[N];   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     int n, cnt = 0;     cin >> n;     string s;     cin >> s;     if (n % 2 == 1) {       cout << 0 <<   n ;       return 0;     }     dp[0] = 1;     for (int i = 0; i < n; i++) {       if (s[i] !=  ? )         cnt++;       else {         for (int j = (i + 1) / 2; j > 0; j--) dp[j] = dp[j] + dp[j - 1];       }     }     unsigned int ans = dp[n / 2];     for (int i = 0; i < n / 2 - cnt; i++) ans *= 25;     cout << ans <<   n ;   }   