백준 2864 5와 6의 차이

https://www.acmicpc.net/problem/2864

2864번: 5와 6의 차이

public class Boj2864_5와6의차이 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        StringTokenizer st = new StringTokenizer(br.readLine());

        String a = st.nextToken();
        String b = st.nextToken();

        String new_a = a, new_b = b;
        new_a = a.replaceAll("6", "5");
        new_b = b.replaceAll("6", "5");
        System.out.print(Integer.parseInt(new_a) + Integer.parseInt(new_b));
        System.out.print(" ");

        new_a = a.replaceAll("5", "6");
        new_b = b.replaceAll("5", "6");
        System.out.print(Integer.parseInt(new_a) + Integer.parseInt(new_b));

    }
}