题解 | #取近似值#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextFloat()) {
            float f = in.nextFloat();
            int last = (int)(f * 10f) / 1 % 10;
            if (last >= 5 ) {
                System.out.println((int)f + 1);
            } else {
                System.out.println((int)f);
            }
        }
    }
}