B.cpp

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define mp make_pair
#define pb push_back

bool comp(ll a, ll b) {
	return a>b;
} 

void solve(){
	// Solve here
	string s;
	cin>>s;
	ll l = s.size();
	ll t = 0;
	vector<ll> v;
	for(ll i=0;i<l;i++) {
		if(s[i] == '1'){
			t++;
			while(s[i]==s[i+1] and s[i] == '1' and i<l) {
				i++;
				t++;
			}
		}
		if(t>0) v.pb(t);
		t = 0;
	}

	sort(v.begin(), v.end(), comp);
	ll ans = 0;
	for(int i=0;i<v.size();i+=2) {
		ans+=v[i];
	}
	cout<<ans<<endl;
	v.clear();
}

int main() {

	#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
	#endif
	ios::sync_with_stdio(0);
	cout.tie(0);
	cin.tie(0);
	int t;
	cin>>t;
	while(t--){
		solve();
	}
	return 0;
}