#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a, b, i, j, n, t, m;
  cin >> t;
  while (t--) {
    string s;
    cin >> s;
    n = s.size();
    vector<long long> ans;
    long long count = 0;
    for (i = 0; i < n; i++) {
      if (s[i] == '1')
        count++;
      else {
        ans.push_back(count);
        count = 0;
      }
    }
    if (count != 0) ans.push_back(count);
    long long sum = 0;
    sort(ans.rbegin(), ans.rend());
    for (i = 0; i < ans.size(); i++) {
      if (i % 2 == 0) sum += ans[i];
    }
    cout << sum << endl;
  }
}
