#include <bits/stdc++.h>
using namespace std;
int main() {
    int a;
    cin>>a;
    if(a>0){
	cout<<"+";
	}else{
	cout<<"-";
	}
    return 0;
}
/**************************************************************
	Problem: 1645
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/