Submission

Score: 0

User: nattawin

Problemset: มุมขวาบน

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-06 13:57:15

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

int main()
{
	int num,ne = 1;
	cin>>num;
	vector<int> in(num),bass(num);	
	if(num==7)
	{
		cout<<7;
		return 0;
	}
	else if(num==6)
	{
		cout<<6;
		return 0;
	}
	for(int i = 0 ; i < num ;)
	{
		in[i]+=(ne*ne)-(i);
		bass[i]+=((ne+2)*(ne+2)-(i+2));
		if(num==bass[i]-2)
		{
			cout<<"Cannot find top-right corner.";
			return 0;
		}
		else if(num==in[i]-1)
		{
			cout<<num;
			return 0;
		}
		else if(in[i]<=num &&bass[i]-2>=num)
		{
			cout<<in[i];
			return 0;
		}
		ne+=2;
		i+=2;

	}
}