Submission

Score: 100

User: 68pretoi00314

Problemset: กองส้ม

Language: cpp

Time: 0.002 second

Submitted On: 2025-08-18 20:10:15

#include <bits/stdc++.h>
using namespace std;

int main()
{
	int c,b,a[400000],k=0,n=0;
	cin>>c>>b;
	for(int i = 0; i<c; i++)
	{
		a[i] = (i+1)*(i+1);
//        cout << a[i] <<" ";
	}
	while(b>0)
	{
		b-=a[k];
		k+=1;
		if (b>=0)
		{
			n+=1;
		}
	}
	c-=n;
	cout<<c;
}