#include <bits/stdc++.h>
using namespace std;

int main() {
    // 入力
    int N;
    cin >> N;

    // 判定
    vector<int> digit = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    for (int i = 0; i < N; i++) {
        vector<int> A(4);
        string R;
        cin >> A[0] >> A[1] >> A[2] >> A[3] >> R;        
        if (R == "YES") {
            for (int j = 0; j < 10; j++) {
                if (find(A.begin(), A.end(), j) == A.end()) digit[j] = -1;
            }
        } else {
            for (int j = 0; j < 4; j++) digit[A[j]] = -1;
        }
    }

    // 出力
    for (int i = 0; i < 10; i++) {
        if (digit[i] != -1) cout << i << endl;
    }
}