#include<bits/stdc++.h>

using namespace std;
string review;
int n,sz;
const int maxn=10e+5;
int brp[maxn],brn[maxn];
int brsm=0,brsd=0;
void read()
{
    fstream f;
    f.open("smile.in");
    f>>n;
    f>>review;
    sz=review.size();
}

void ff()
{
    brp[n-1]=brn[n-1]=0;
    for(int i=n-2;i>=0;i--)
    {
        brn[i]=brn[i+1];
        brp[i]=brp[i+1];
        if(review[i+1]==')')
        {
            brp[i]++;
        }
        if(review[i+1]=='(')
        {
            brn[i]++;
        }
    }
    //for(int i=0;i<n;i++)cout<<brp[i]<<" ";
    //cout<<endl;
    //for(int i=0;i<n;i++)cout<<brn[i]<<" ";
    //cout<<endl;
    for(int i=0;i<n;i++)
    {
        if(review[i]==':')
        {
            brsm+=brp[i];
            brsd+=brn[i];
        }
    }
}
string print()
{
    string ans;
    if(brsm>brsd)
    {
        ans="positive";
    }
    else if(brsd>brsm)
    {
        ans="negative";
    }
    else ans="neutral";
    return ans;
}
int main()
{
	read();
	ofstream mf;
	mf.open("smile.out");
	ff();
	mf<<print()<<endl;
	return 0;
}