GTV

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Pr9GreateOfTwoValues {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String type = reader.readLine();
        String str1 = reader.readLine();
        String str2 = reader.readLine();
        reader.close();
        getMax(type, str1, str2);
    }

    private static void getMax(String type, String str1, String str2) {
        if ("int".equals(type)) {
            int num1 = Integer.parseInt(str1);
            int num2 = Integer.parseInt(str2);
            if (num1 > num2) {
                System.out.println(num1);
            } else {
                System.out.println(num2);
            }
        } else if ("char".equals(type)) {
            char ch1 = str1.charAt(0);
            char ch2 = str2.charAt(0);
            if (ch1 > ch2) {
                System.out.println(ch1);
            } else {
                System.out.println(ch2);
            }
        } else if ("string".equals(type)) {
            int result = str1.compareTo(str2);
            if (result == 0)
                System.out.println("str1 and str2 are equal");
            else if (result < 0)
                System.out.println(str2);
            else
                System.out.println(str1);
        }
    }
}