#include<bits/stdc++.h>
using namespace std;
string s;
int n, hp[100005], sd[100005];
int main() {
    fstream ccn("smile.in"), ccut("smile.out");

    ccn >> n;
    ccn >> s;

    for(int i=n; i>=0; i--) {
        if(s[i]==')') hp[i]++;
        hp[i]+=hp[i+1];
    }

    for(int i=n; i>=0; i--) {
        if(s[i]=='(') sd[i]++;
        sd[i] += sd[i+1];
    }

    long long sum=0;

    for(int i=0; i<n; i++) {
        if(s[i]==':') sum += hp[i] - sd[i];
    }

    if(sum>0) {
        ccut << "positive" << "\n";
    }
    else if(sum<0) {
        ccut << "negative" << "\n";
    }
    else {
        ccut << "neutral" << "\n";
    }

    return 0;
}