Time Zone

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2049    Accepted Submission(s): 636

Problem Description

Chiaki often participates in international competitive programming contests. The time zone becomes a big problem.
Given a time in Beijing time (UTC +8), Chiaki would like to know the time in another time zone s.

 

 

Input

There are multiple test cases. The first line of input contains an integer 9).

 

 

Output

For each test, output the time in the format of m (24-hour clock).

 

 

Sample Input

3

11 11 UTC+8

11 12 UTC+9

11 23 UTC+0

 

 

Sample Output

11:11

12:12

03:23

 

 

Source

2018 Multi-University Training Contest 1

 

 

这题看起来不难，但是精度问题挺烦人的．

 

 1 #include <iostream>
 2 using namespace std;
 3 int n;
 4 int main(){
 5     scanf("%d",&n);
 6     int x,y;
 7     double z;
 8     char s[4];
 9     while(n--){
10         scanf("%d%d%c%c%c%c%lf",&x,&y,&s[0],&s[1],&s[2],&s[3],&z);
11         if(s[3]=='-'){
12             z = -z;
13         }
14         double k = (z-8.0)*60.0;
15         k += k>0?0.5:-0.5;
16         int ans = (int)(k);
17         ans +=(x*60+y);
18         ans = (ans+1440)%1440;
19         int xn = (ans/60)%24;
20         int yn = ans%60;
21         printf("%02d:%02d\n",xn,yn);
22     }
23     return 0;
24 }