Problem Description There must be many A B problems in our HDOJ , now a new one is coming. Give you two hexadecimal integers , your task is to calculate the sum of them,and print it in hexadecimal too. Easy ? AC it !
Input The input contains several test cases, please process to the end of the file. Each case consists of two hexadecimal integers A and B in a line seperated by a blank. The length of A and B is less than 15.
Output For each test case,print the sum of A and B in hexadecimal in one line.
Sample Input A -A 1A 12 1A -9 -1A -12 1A -AA
Sample Output 0 2C 11 -2C -90
代码语言：javascript复制import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
long str1 = sc.nextLong(16);
long str2 = sc.nextLong(16);
long a = str1 str2;
if(a<0){
//System.out.println(a);
a=-a;
//System.out.println(a);
System.out.println("-" Long.toHexString(a).toUpperCase());
}else{
System.out.println(Long.toHexString(a).toUpperCase());
}
}
}
}
