Time Zone

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 T (1≤T≤106 ), indicating the number of test cases. For each test case:
The first line contains two integers a , b (0≤a≤23,0≤b≤59 ) and a string s in the format of "UTC+X'', "UTC-X'', "UTC+X.Y'', or "UTC-X.Y'' (0≤X,X.Y≤14,0≤Y≤9 ).

 

 

Output

For each test, output the time in the format of hh:mm (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

第一次做
没想到全部转化成分钟处理要简单得多

#include<stdio.h>
#include<iostream>
using namespace std;
int main()
{
	int n;
	scanf("%d",&n);
	int a,b;
	string s;
	while(n--)
	{
		cin>>a>>b>>s;
		double t=0;
		int flag=0;
		for(int i=4;i<s.size();i++)
		{
			if(s[i]>='0'&&s[i]<='9'&&flag==0)
			t=t*10.0+s[i]-'0';
			else if(s[i]>='0'&&s[i]<='9'&&flag==1)
			t=t+(s[i]-'0')/10.0;
			else
			flag=1;
		}
		if(s[3]=='-')
		t=a*60+b-(t-8)*60;
		else
		t=a*60+b+(t-8)*60;
		a=(int)(t/60)%24;
		b=(int)t%60;	
		printf("%02d:%02d\n",a,b);
	}

	
 }