백준공부/java
[백준] 31472번 갈래의 색종이 자르기 (bronze 3
gomduri43
2024. 3. 12. 18:53
import java.io.*;
import java.util.*;
public class Main{
public static void main(String[] args) throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));
int n=Integer.valueOf(br.readLine());
bw.write(4*(int)(Math.sqrt(2*n))+" ");
bw.flush();
}
}