Submission

Score: 100

User: Prap

Problemset: กองส้ม

Language: cpp

Time: 0.003 second

Submitted On: 2026-03-20 17:00:33

#include <iostream>
#include <cmath>
#include <vector>
#include <string>
using namespace std;
int main() {
	int L,N;
	cin>>L>>N;
	int num = 0;
	for (int i = 1; i<=L; i++) {
		num = num + (i*i);
		if (N<num) {
			cout<<L-i+1;
			return 0;
		}
		else if (N==num) {
			cout<<L-i;
			return 0;
		}
	}
	cout<<0;
	return 0;
}