#include <bits/stdc++.h>
#define rep(i, n) for(long long i = 0; i < n; i++)
#define ALL(v) (v).begin(), (v).end()
using namespace std;

using lint = long long;

int main() {
    int n;
    cin >> n;
    vector<bool> ok(10, true);
    vector<int> cnt(10, 0);
    int yes = 0;
    rep(i, n) {
        vector<int> v(4);
        rep(j, 4) {
            cin >> v[j];
        }
        string s;
        cin >> s;
        if (s == "YES") {
            yes++;
            for (int x : v) {
                if (ok[x]) {
                    cnt[x]++;
                }
            }
        } else {
            for (int x : v) {
                ok[x] = false;
            }
        }
    }
    rep(i, 10) {
        if (ok[i] && cnt[i] == yes) {
            cout << i << endl;
        }
    }
}