Q

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 121A -9-1A -121A -AA

Sample Output

02C11-2C-90

#include<stdio.h>int main (){    long long int a, b, sum;    while(scanf("%llX %llX", &a, &b)!=EOF)    {        sum=a+b;        if(sum<0)            printf("-%llX\n", -sum);        else            printf("%llX\n", sum);    }    return 0;}