HDU 2054 A == B ?

判断两个大数是否相等

import java.util.*;import java.math.BigDecimal;public class Main { public static void main(String args[]){         Scanner in = new Scanner(System.in);         while (in.hasNext()){         BigDecimal A = in.nextBigDecimal();         BigDecimal B = in.nextBigDecimal();             if (A.compareTo(B) == 0) {                 System.out.println("YES");             }             else {                 System.out.println("NO");             }         }     } }