#include <bits/stdc++.h>

using namespace std;
const int MAXN = 1e5 + 10;

int happyBrackets[MAXN], sadBrackets[MAXN];
int main()
{
    #if 1
    freopen("smile.in", "r", stdin);
    freopen("smile.out", "w", stdout);
    #endif
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    char z[MAXN];
    int n, i, positive = 0, negative = 0;
    cin >> n >> z;
    for (i = 1; i <= n; i++)
    {
        sadBrackets[i] = sadBrackets[i-1];
        happyBrackets[i] = happyBrackets[i-1];

        if (z[i-1] == ')')happyBrackets[i]++;
        if (z[i-1] == '(')sadBrackets[i]++;
    }

    for (i = 1; i <= n; i++)
    {
        if (z[i-1] == ':')
        {
            positive += happyBrackets[n]-happyBrackets[i];
            negative += sadBrackets[n]-sadBrackets[i];

        }

    }

    if (positive > negative)cout << "positive\n";
    if (positive < negative)cout << "negative\n";
    if (positive == negative)cout << "neutral\n";

    return 0;
}