fn main() {
    let mut input = String::new();
    let _ = std::io::stdin().read_line(&mut input);
    let turn: usize = input.trim().parse().unwrap();

    struct Input {
        estimate: Vec<usize>,
        answer: String,
    }

    let get_input = || {
        let mut input = String::new();
        let _ = std::io::stdin().read_line(&mut input);
        let mut estimate: Vec<usize> = input.trim().split_whitespace().take(4).map(|n| n.parse().unwrap()).collect();
        let answer: &str = input.trim().split_whitespace().nth(4).unwrap();

        Input { estimate, answer: answer.to_string() }
    };

    let mut checker = vec![0i32; 10];

    for i in 0..turn {
        let input = get_input();
        if input.answer == "YES" {
            for j in input.estimate {
                checker[j] += 1;
            }
        } else {
            for j in input.estimate {
                checker[j] -= 1;
            }
        }
    }

    let result = checker.iter().enumerate().max_by(|x, y| x.1.cmp(y.1)).unwrap();
    println!("{}", result.0);
}