题解 | #取近似值#

import java.util.Scanner;
public class Main {
   public static void main(String[] args){
       Scanner in = new Scanner(System.in);
       double a = in.nextDouble();
       int b = (int)a;
       if(a-b>=0.5){
           b = (int)(a + 0.5);
       }
       System.out.print(b);

   } 
}