@@ -0,0 +1,396 @@
+import java.io.*;%0Aimport java.util.*;%0Aimport java.text.*;%0Aimport java.math.*;%0Aimport java.util.regex.*;%0A%0Apublic class Solution %7B%0A%0A    public static void main(String%5B%5D args) %7B%0A        Scanner in = new Scanner(System.in);%0A        BigInteger a = in.nextBigInteger();%0A        BigInteger b = in.nextBigInteger();%0A        System.out.println(a.add(b));%0A        System.out.println(a.multiply(b));%0A    %7D%0A%7D

add java-big-integer