doubt.cpp

#include <iostream>


using namespace std;

int main() {
    int t = 0;
    scanf("%d", &t);
    for (int k = 0; k < t; k++) {
        long amount_of_water = 0;
        long buckets_filled = 0;
        scanf("%ld", &amount_of_water);
        int i = 0;
        bool b = true;
        while (b) {
            buckets_filled  = (i*(2*i +1)*(i+1))/2;
            b = false;
            
            if (buckets_filled + (i+1)*(i+1) <= amount_of_water ) {
                i++;
                b = true;
        
            }
        }
        printf("%d\n", i);
        
    }
    return 0;
}