func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       long long int n, x;       cin >> n >> x;       long long int a[n];       a[0] = 0;       string s;       cin >> s;       for (int i = 0; i < n; i++) {         char ch;         ch = s[i];         if (i == 0) {           if (ch ==  1 )             a[i]--;           else             a[i]++;         } else {           if (ch ==  1 )             a[i] = a[i - 1] - 1;           else             a[i] = a[i - 1] + 1;         }       }       long long int as = 0;       for (int i = 0; i < n; i++) {         long long int k = (x - a[i]) * a[n - 1];         if (k >= 0) {           if (abs(x - a[i]) == 0 ||               (a[n - 1] != 0 && abs(x - a[i]) % abs(a[n - 1]) == 0)) {             as++;           }         }       }       long long int count = 0;       for (int i = 0; i < n; i++) {         if (a[i] == x) {           count++;         }       }       as = max(as, count);       if (as != 0 && a[n - 1] == 0) {         cout << -1 <<   n ;       } else {         if (x == 0) as++;         cout << as <<   n ;       }     }   }   