Source Code
#include <bits/stdc++.h>
 
#define ll long long
#define mk make_pair
#define pb push_back
#define f first
#define s second
using namespace std;
 
ll mod = 1e9 + 7 ;
 
const int N = 1e6 + 10 ;
 
 
 
void solve(){
 
	int n ; 
	cin >> n ; 
	vector<int> a(n + 1) ; 
	vector<pair<int,int>> v ; 
	int lst = -2e9; 
	for(int i=1 ; i<=n ; i++){ 
		scanf("%d" , &a[i]) ; 
		if(a[i] + i > lst){
			v.pb({a[i] + i , i}) ;
			lst = a[i] + i ;
		}
		
	}
	for(int i=1 ; i<=n ; i++){

		int idx = lower_bound(v.begin() , v.end() , mk(i - a[i] , -1) ) - v.begin() ; 
		cout << (idx == v.size() ? -1 : v[idx].s) << " " ;
	}
	cout << endl;


 
}
 
int main(){
	int t = 1  ;
	cin >> t ; 
	while(t--){
		solve();
	}
 
 
	return 0 ;
}
Copy
Easy challenge? Rand()
GNU G++17
85 ms
4.0 MB
Accepted