UVA_11614_Etruscan_Warriors

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <string>
#include <cctype>
#include <stack>
#include <queue>
#include <list>
#include <vector>
#include <map>
#include <set>
#include <sstream>
#include <stdlib.h>
#include <cmath>
#define LL unsigned long long
using namespace std;

int main() {
    int t;
    double n;
    double n1;
    scanf("%d",&t);
    while(t--){
        scanf("%lf",&n);
        n1=-1+(sqrt(1+(8*n)));
        n1=n1/2;
        int k = (int) n1;
        printf("%d\n",k);
    }
    return 0;
}