#include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     while (n--) {       string s;       cin >> s;       int i, k, cnt = 0;       for (i = 0; i < s.length(); i++)         if (s[i] !=  0 ) break;       k = i;       for (i; i < s.length(); i++)         if (s[i] ==  0 ) cnt++;       for (int j = s.length(); j >= k; j--) {         if (s[j] ==  0 )           cnt--;         else if (s[j] ==  1 )           break;       }       cout << cnt << endl;     }     return 0;   }   