题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n==0){
        cout<<0;
    }else if(n>0){
        cout<<"yes";
    }else if(n<0){
        cout<<"no";
    }
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n==0){
        cout<<0;
    }else if(n>0){
        cout<<"yes";
    }else{
        cout<<"no";
    }
    return 0;
}