hdu - 1002 - A + B Problem II（Java大数）

import java.util.Scanner;
import java.math.BigInteger;
public class Main {
public static void main(String[] args) {
int T, cnt = 1;
Scanner cin = new Scanner(System.in);
T = cin.nextInt();
while(T-->0){
String s1 = cin.next();
String s2 = cin.next();
BigInteger a = new BigInteger(s1);
BigInteger b = new BigInteger(s2);
System.out.println("Case " + (cnt++) + ":");
System.out.println(a + " + " + b + " = " + a.add(b));
if(T > 0) System.out.println();
}
cin.close();
}
}