#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <math.h>
#include <bitset>
#include <iterator>
#include <iomanip>
#include <sstream>
#define INF 2000000000
using namespace std;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
#define sym cout<<"---------"<<endl;
#define ll long long
#define PL pair<long long, long long>
#define P pair<int,int>
#define mk make_pair
#define en endl
#define WHITE 0
#define BLACK 2
#define GRAY 1
#define RE return 0
#define int ll

int numbers[10];

signed main(){
  int n;
  cin>>n;
  for(int i=0; i<n; i++){
    int num[4];
    for(int j=0; j<4; j++){
      cin>>num[j];
    }
    string s;
    cin>>s;
    if(s[0]=='N')
      for(int j=0; j<4; j++){
        numbers[num[j]]=1;
      }
    else{
      for(int j=0; j<10; j++){
        bool there=false;
        for(int k=0; k<4; k++) if(num[k]==j) there=true;
        if(there) continue;
        numbers[j]=1;
      }
    }
  }
  for(int i=0; i<10; i++){
    if(numbers[i]) continue;
    cout<<i<<en;
    RE;
  }
}