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// Arti1990, II UWr

#include <bits/stdc++.h>

#define forr(i, n)                  for(int i=0; i<n; i++)
#define FOREACH(iter, coll)         for(auto iter = coll.begin(); iter != coll.end(); ++iter)
#define FOREACHR(iter, coll)        for(auto iter = coll.rbegin(); iter != coll.rend(); ++iter)
#define lbound(P,K,FUN)             ({auto SSS=P, PPP = P-1, KKK=(K)+1; while(PPP+1!=KKK) {SSS = (PPP+(KKK-PPP)/2); if(FUN(SSS)) KKK = SSS; else PPP = SSS;} PPP;})
#define testy()                     int _tests; scanf("%d", &_tests); FOR(_test, 1, _tests)
#define CLEAR(tab)                  memset(tab, 0, sizeof(tab))
#define CONTAIN(el, coll)           (coll.find(el) != coll.end())
#define FOR(i, a, b)                for(int i=a; i<=b; i++)
#define FORD(i, a, b)               for(int i=a; i>=b; i--)
#define MP                          make_pair
#define PB                          push_back
#define ff                          first
#define ss                          second
#define deb(X)                      X;

#define M 1000000007
#define INF 1000000007LL

using namespace std;

int n, ile;
char slowo[1000007];
char l[] = {'.', '.', '.', 'p', 'r', 's', 'o', '.', '.'};

int solve()
{
    scanf("%d %s", &n, slowo);
    forr(i, 8*n)
        ile += (slowo[i] == '1');

    if(ile >= 3*n && ile <= 6*n)
    {
        forr(i, n)
        {
            FORD(j, 6, 3)
                if(ile-j >= 3*(n-i-1) && ile-j <= 6*(n-i-1))
                {
                    printf("%c", l[j]);
                    ile -= j;
                    break;
                }
        }
        printf("\n");
    }
    else
        printf("NIE\n");

    return 0;
}

int main()
{
    solve();

    return 0;
}