@@ -0,0 +1,842 @@
+import java.math.BigInteger;%0Aimport java.util.Scanner;%0A%0Apublic class Main %7B%0A%0A    public static void main(String%5B%5D args) %7B%0A%0A        Scanner sc = new Scanner(System.in);%0A%0A        int N = sc.nextInt();%0A%0A        for (int i = 0; i %3C N; i++) %7B%0A%0A            BigInteger first = new BigInteger(sc.next());%0A            BigInteger second = new BigInteger(sc.next());%0A%0A            int firstLength = first.toString().length();%0A            int secondLength = second.toString().length();%0A%0A            if (80 %3C firstLength %7C%7C 80 %3C secondLength) %7B%0A                System.out.println(%22overflow%22);%0A                continue;%0A            %7D%0A%0A            if (first.add(second).toString().length() %3C= 80) %7B%0A                System.out.println(first.add(second));%0A            %7D else %7B%0A                System.out.println(%22overflow%22);%0A            %7D%0A%0A        %7D%0A%0A    %7D%0A%0A%7D%0A

Create : 0015