func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       string s;       bool x = false, y = false;       cin >> s;       if (n == 1) {         s[0] % 2 ? cout <<  1 n  : cout <<  2 n ;         continue;       }       for (int i = 0; i < n; i++) {         if ((i + 1) % 2 == 1)           x |= ((s[i] -   0 ) % 2 == 1);         else if ((i + 1) % 2 == 0)           y |= ((s[i] -   0 ) % 2 == 0);       }       if (n % 2 == 1) {         x ? cout << 1 : cout << 2;       } else {         y ? cout << 2 : cout << 1;       }       cout <<   n ;     }     return 0;   }   