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