Submission

Score: 100

User: Tjeez

Problemset: กองส้ม

Language: cpp

Time: 0.004 second

Submitted On: 2026-09-20 09:17:17

#include <iostream>
using namespace std;
int main(){
	int l,n,a,c=0;
	cin>>l>>n;
	a=(l*(l+1)*(2*l+1))/6 - n;
	while (a>0){
		a-=l*l;
		l-=1;
		c+=1;
	}
	cout<<c;
}