#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <queue>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

static const double EPS = 1e-8;
static const double PI = 4.0 * atan(1.0);
static const double PI2 = 8.0 * atan(1.0);

#define REP(i,n)	for(int i=0;i<(int)n;++i)
#define ALL(c)		(c).begin(),(c).end()
#define CLEAR(v)	memset(v,0,sizeof(v))
#define MP(a,b)		make_pair((a),(b))
#define ABS(a)		((a)>0?(a):-(a))
#define FOR(i,s,n)	for(int i=s;i<(int)n;++i)

int main(int argc, char **argv) {
	int N, A[4];
	string R;
	cin >> N;
	int yes[10], no[10];
	CLEAR(yes); CLEAR(no);
	REP(i, N) {
		REP(j, 4) cin >> A[j];
		cin >> R;
		if (R == "YES") REP(j, 4) ++yes[A[j]];
		else REP(j, 4) ++no[A[j]];
	}
	int res = -1;
	REP(i, 10) yes[i] -= no[i];
	int y[10];
	copy(yes, yes + 10, y);
	sort(y, y + 10);
	REP(i, 10) if (yes[i] == y[9]) {
		cout << i << endl;
		break;
	}
	return 0;
}