package main

import (
    "fmt"
)

func main(){
    var n int
    fmt.Scan(&n)
    m := map[int]int{0:0, 1:0, 2:0, 3:0, 4:0, 5:0, 6:0, 7:0, 8:0, 9:0}
    var a, b, c, d int
    var ans string
    
    for i := 0; i < n; i++ {
        fmt.Scan(&a, &b, &c, &d, &ans)
        if ans == "YES" {
            m[a] += 1
            m[b] += 1
            m[c] += 1
            m[d] += 1
        } else {
            m[a] -= 1
            m[b] -= 1
            m[c] -= 1
            m[d] -= 1
        }

    }

    max, res := -6, 0
    for k, v := range m {
        if v >= max {
            max = v
            res = k
        }
    }
    fmt.Println(res)
}