1002 Java大数加法

import java.math.*; import java.util.*; public class Main { public static void main(String[] args) { int n,i; BigInteger a,b,c; Scanner cin=new Scanner(System.in); n=cin.nextInt(); for (i=1;i<=n;i++) { if (i!=1) System.out.println(); System.out.println("Case "+i+":"); a=cin.nextBigInteger(); b=cin.nextBigInteger(); c=a.add(b); System.out.println(a+" + "+b+" = "+c); } } }