全体目光向我看齐，我宣布个事儿：我是_____!

import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        double num = sc.nextDouble();
        double b = num % 1;
        if(b >= 0.5)
            num = num - b + 1;
        else
            num = num - b;
        System.out.println((int)num);
    }
}