#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
#include <math.h>
#include <string.h>
#include <map>
#include <numeric>
#include <random>
#include <queue>
#include <deque>
#include <tuple>
#include <iomanip>
#include <iterator>
#include <functional>

using namespace std;
typedef long long ll;

const int INF = (1 << 30) - 1;
const ll INFLL= (1LL << 61) - 1;
const int MOD = 1000000007;
#define ALL(a) (a).begin(),(a).end()
#define rALL(a) (a).rbegin(),(a).rend()
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)

int main(){
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int N;
  cin>>N;
  vector<int>a(N),b(N),c(N),d(N),r(N);
  REP(i,N){
    string s;
    cin>>a[i]>>b[i]>>c[i]>>d[i]>>s;
    r[i]=(s=="YES");
  }
  FOR(i,0,10){
    bool flag=true;
    REP(j,N){
      if((i==a[j] || i==b[j] || i==c[j] ||i==d[j]) != r[j])flag=false;
    }
    if(flag)cout<<i<<endl;
  }
}