hdu 2057 A+B

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=2057

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

-2C

-90

 1 #include <cstdio>  
 2 #include <iostream>  
 3 #include<algorithm>
 4 #include<math.h> 
 5 #include <string.h>  
 6 #include<queue>
 7 using namespace std;
 8 
 9 int main()
10 {
11     __int64 a,b;
12     while(scanf("%I64X %I64X",&a,&b)!=EOF)
13     {
14         a+=b;
15         if(a<0)
16         {
17             a=-a;
18             printf("-%I64X
",a);
19         }
20         else
21             printf("%I64X
",a);//由于%I64X，不能输出
22                                 //负数，所以负数的输出要做处理,注意要用 X 
23     }
24     return 0;
25  }