HDU 1002 A+B Problem II 大数相加

java里的BigInteger。。还是很好用的

import java.io.*;
import java.util.*;
import java.math.*;

public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader cin = new BufferedReader( new InputStreamReader(system.in) );
        PrintWriter pw = new PrintWriter( new OutputStreamWriter(System.out) );
        String s;
        while( (s=cin.readLine())!=null ){
            int n = Integer.parseInt(s);
            for(int i=1;i<=n;i++)
            {
                s = cin.readLine();
                String t[] = s.split(" ");
                BigInteger ai = new BigInteger(t[0]);
                BigInteger bi = new BigInteger(t[1]);
                pw.println("Case "+i+":");
                pw.println(t[0]+" + "+t[1]+" = "+ai.add(bi));
                if(i!=n) pw.println();
            }    
            pw.flush();
        }
        cin.close();
        pw.close();
    }
}