SPREAD2

#include <bits/stdc++.h>
#define MAX 1000007

using namespace std;

int arr[MAX];
int main(){
    int q; scanf("%d", &q);
    while(q--){
        int n; scanf("%d", &n);
        for(int i = 0; i < n; i++) scanf("%d", &arr[i]);

        int idx = 1, day = 0;
        long long pick = arr[0];
        while(idx < n){
            long long acum = 0;
            for(; idx < n && pick >= 0; idx++, pick--){
                acum += arr[idx];
            }
            pick = acum;
            day++;
        }
        printf("%d\n", day);
    }
    return 0;
}