#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n>0){
    	cout<<"+";
    }else{
    	cout<<"-";
    }
    
}

/**************************************************************
	Problem: 1645
	User: yangjunwen
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/