Submission

Score: 100

User: kavin8888

Problemset: ปราสาท

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-22 22:42:16

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a;
	cin >> a;
	int q=1;
	while(q*q<a)
	{
		q++;
	}
	if(q%2==a%2)
	{
		cout << q+q-2;
	}
	else 
	{
		cout << q+q-3;
	}
}