import java.util.Scanner;


public class Demo {

    static int getMax(int number1, int number2){
        return Math.max(number1, number2);
    }
    static char getMax(char symbol1,char symbol2){
        if ((int) symbol1 > (int) symbol2) {
            return symbol1;
        }
        return  symbol2;
    }
    static String getMax(String word1,String word2){
        int word3 = word1.length();
        int word4 = word2.length();
        if(word3 > word4){
            return  word1;
        }
        return  word2;
    }


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String word = scanner.nextLine();

        switch(word){
            case "int":
                int number1 = Integer.parseInt(scanner.nextLine());
                int number2 = Integer.parseInt(scanner.nextLine());
                System.out.println(getMax(number1,number2));
                break;
            case "char":
                char symbol1 = scanner.nextLine().charAt(0);
                char symbol2 = scanner.nextLine().charAt(0);
                System.out.println(getMax(symbol1,symbol2));
                break;
            case "String":
                String word1 = scanner.nextLine();
                String word2 = scanner.nextLine();
                System.out.println(getMax(word1,word2));
                break;
                }
        }
    }