2018 Beijing University of Information Science and Technology 10th Program Design Competition and ACM Selection E-233

Topic link: https://www.nowcoder.com/acm/contest/118/E

When I see the big numbers, I directly set JAVA, but later the MekakuCityActors boss told me that we can find the rules (>_<), and if you think about it, you can. The following is my java implementation code:

 1 import java.math.BigInteger;
 2 import java.util.Scanner;
 3 
 4 
 5 public class Main {
 6     public static void main(String arg[]) {
 7         Scanner sc = new Scanner(System.in);
 8         while(sc.hasNext()) {
 9             int T = sc.nextInt();
10             while((T--) > 0 ) {
11                 BigInteger a = sc.nextBigInteger();
12                 BigInteger b = sc.nextBigInteger();
13                 System.out.println(a.multiply(b));
14             }
15         }
16         sc.close();
17     }
18 }