cf-1398-B

/*    BISMILLAHIR-RAHMANIR-RAHIM
 ____________________________________
|                                    |
|       SHANTO_SUST_SWE-19_029       |
|____________________________________|
*/

#include <bits/stdc++.h>

using namespace std;

#define ll          long long
#define fastio      ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define pb          push_back
#define Pi          acos(-1.0)
#define r0          return 0
#define endl        "\n"
#define show(x)     cout << x << endl
#define take(x)     cin >> x
#define debug       1

int main()
{
    int t, i, j, tot, point;
    cin >> t;
    string s;
    vector < int > v;

    while(t--) {
        cin >> s;
        int sz = s.size();

        for(i = 0; i < sz; ) {
            if(s[i] == '1') {
                tot = 0;
                for(j = i; j < sz; j++) {
                    if(s[j] != '1') break;
                }
                v.push_back(j - i);
                i = j;
            }
            else i++;
        }
        sort(v.rbegin(), v.rend());

        sz = v.size();
        point = 0;
        for(i = 0; i < sz; i += 2) {
            point += v[i];
        }

        cout << point << endl;

        s.clear();
        v.clear();
    }

    r0;
}

//ALHAMDULILLAH