#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
using namespace std;



int main()
{
    int  n, ones = 0;
    char a;
    char letters[8] = { '0','0','0','p','c','m','o' };
    cin >> n;
    for (int i = 0; i < 8*n; i++) {
        cin >> a;
        ones += a - '0';
    }
    int zeros = 8 * n - ones;
    int diff = ones - zeros;
    //cout << "diff=" << diff << '\n';
    if (diff > 4 * n || diff < -2 * n){
        cout << "NIE" << '\n';
         return 0; 
    }
    else
    {
        int i = 0;
        if (diff > 0 && diff % 4 == 2) {
            cout << letters[5];
            diff -= 2;
            i++;
        }
        while (diff > 0) {
            cout << letters[6];
            diff -= 4;
            i++;
        }
        while (diff < 0) {
            cout << letters[3];
            diff += 2;
            i++;
        }
        while (i < n) {
            cout << letters[4];
            i++;
        }
    }
    return 0;
}