Submission

Score: 100

User: nattawin

Problemset: มุมขวาบน

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-06 14:19:17

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

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

	}
}