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