Submission

Score: 100

User: Some1258

Problemset: กองส้ม

Language: cpp

Time: 0.002 second

Submitted On: 2026-07-16 08:42:42

#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y;
    cin>>x>>y;
    int n=1;
    int sum=0;
    while(y>=sum){
        sum+=n*n;
        n++;
    }
    int ans=x-(n-2);
    //cout<<x<<" "<<n-2<<endl;
    if (ans<0){
        ans=0;
    }
    cout<<ans;
}