#include<bits/stdc++.h>
using namespace std;  
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
#define rep(i,n) for(ll i=0;i<(n);i++)  
#define pii pair<int,int>
#define piii pair<int,pii>
#define mp make_pair
#define pb push_back  
#define ALL(a) (a).begin(),(a).end()
#define FST first
#define SEC second  
const int INF = (INT_MAX/2);
const ll LINF = (LLONG_MAX/2);
const double eps = 1e-14;
const double PI = M_PI;  
#define DEB cout<<"!"<<endl
#define SHOW(a,b) cout<<(a)<<" "<<(b)<<endl
#define SHOWARRAY(ar,i,j) REP(a,i)REP(b,j)cout<<ar[a][b]<<((b==j-1)?((a==i-1)?("\n\n"):("\n")):(" "))
  
#define DIV 1000000007

int dp[10] ={};

int main(){
  int n; cin >> n;
  rep(i,n){
    int a,b,c,d; cin >> a>> b>> c >> d;
    string s; cin >> s;
    if(s == "YES"){
      dp[a]++,dp[b]++,dp[c]++,dp[d]++;
    }else{
      dp[a] = -INF;
      dp[b] = -INF;
      dp[c] = -INF;
      dp[d] = -INF;
    }
  }
  int ans = 0;
  rep(i,10){
    if(dp[ans] < dp[i])
      ans = i;
    if(i==9)
      cout << ans << endl;
  }
  return 0;
}