#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("sse4")
using namespace std;
template <class T>
bool ckmin(T& a, const T& b) {
  return b < a ? a = b, 1 : 0;
}
template <class T>
bool ckmax(T& a, const T& b) {
  return a < b ? a = b, 1 : 0;
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int MOD = 1000000007;
const char nl = '\n';
const int MX = 100001;
void solve();
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int t = 1;
  cin >> t;
  while (t--) {
    solve();
    cout << "\n";
  }
  cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " secs" << endl;
  return 0;
}
void solve() {
  string second;
  cin >> second;
  vector<int> v;
  int last = -1, cnt = 0;
  for (int i = 0; i < second.size(); i++) {
    if (second[i] == '1') {
      if (last != 1) {
        last = 1;
        cnt = 1;
      } else {
        cnt++;
      }
    } else {
      if (last == 1) {
        v.push_back(cnt);
        cnt = 0;
        last = 0;
      }
    }
  }
  if (last == 1) {
    v.push_back(cnt);
  }
  sort(v.begin(), v.end());
  int ans = 0;
  for (int i = v.size() - 1; i >= 0; i = i - 2) {
    ans += v[i];
  }
  cout << ans;
}
