#include <bits/stdc++.h>
using namespace std;
long long d,i,br,br1,br2;
char x;
int main()
{
	freopen("smile.in", "r", stdin);
	freopen("smile.out", "w", stdout);
	
	
	/*ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	*/
	
	cin>>d;
	for(i=0;i<d;i++){
		cin>>x;
		if(x==':')br++;
		else if(x==')'){
			br1+=br;
		}
		else if(x=='('){
			br2+=br;
		}
	}
	
	if(br1>br2){
		cout<<"positive";
		return 0;
	}
	
	if(br1<br2){
		cout<<"negative";
		return 0;
	}


	cout<<"neutral";
	
		
	
	
	
	return 0;
}