백준 6단계 no.7

import java.util.*;

public class Main{
    static int invert(String n) {
        char[] arr = new char[n.length()];
        for (int i = 0; i < n.length(); i++) {
            arr[i] = n.charAt(i);
        }

        char temp = arr[0];
        arr[0] = arr[2];
        arr[2] = temp;

        return Integer.parseInt(new String(arr));
    }

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

        String a = sc.next();
        String b = sc.next();

        int n = invert(a);
        int m = invert(b);

        System.out.println(Math.max(n, m));
    }
}