大数A+B
代码:
import java.math.BigInteger;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int T=input.nextInt();
for(int Case=1;Case<=T;Case++){
BigInteger a=input.nextBigInteger();
BigInteger b=input.nextBigInteger();
System.out.println("Case "+Case+":");
System.out.println(a+" + "+b+" = "+a.add(b));
if(Case!=T) System.out.println();
}
}
}