题解思路

import java.util.Scanner;

public class Main{
    
    public static void main(String[] args){
        Scanner sin = new Scanner(System.in);
                            int y = 0;
        while(sin.hasNext()){
            int x = sin.nextInt();
            // x小于0 y就等于1   x等于0，就等于0 因为y本来就等于0所有这个判断不用写 
            // x 大于0，y就等于-1
            if(x < 0){
                y = 1;
            }else if(x > 0){
                y = -1;
            } 
            System.out.println(y);
        }
    }
}