Submission

Score: 100

User: hmmm

Problemset: กองส้ม

Language: cpp

Time: 0.002 second

Submitted On: 2025-08-04 21:07:39

#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;
}