haunted_house(greedy).cpp

#include<bits/stdc++.h>
using namespace std;

#define faster_ayman    ios_base::sync_with_stdio(false);cin.tie(NULL);
#define int             long long
#define pb              push_back
#define rep(i, a, b)    for (auto i = a; i < b; i++)
#define all(a)          (a).begin(), (a).end()
#define testcase        int tt;cin >> tt;while (tt--)
#define inf             1e18

typedef vector<int>                         vi;
typedef vector<pair<int,int>>               vp;
typedef vector<double>                      vd;
typedef vector<char>                        vc;
typedef set<int>                            si;
typedef set<char>                           sc;
typedef unordered_set<int>                  usi;

void solve() {
    int n;              cin >> n;
    string s;           cin >> s;
    vi ans (n, -1);
    int j = 0;
    int op = 0;
    for (int i = n - 1, k = 0; i >= 0; i--, k++) {
        if (s[i] == '0') {
            op += k - j;
            ans[j++] = op;
        }
    }
    for (auto it : ans) cout << it << ' ';
    cout << '\n';
    
}

signed main() {
    
    faster_ayman
    testcase {
        solve();
    }
    
    return 0;
}