TIANKENG’s rice shop

Problem Description

TIANKENG managers a pan fried rice shop. There are n kinds of fried rice numbered 1-n. TIANKENG will spend t time for once frying. Because the pan is so small, TIANKENG can fry k bowls of fried rice with same kind at most. Assuming that there are m customers coming to the shop, and we know the arriving time of each customer and the brand and number of the fried rice they need. Could you tell TIANKENG the departure time of every customer respectively? Pay attention that TIANKNEG will serve the customer who comes earlier and he will fry the rice as much as possible. Meanwhile, customers are in queue depending on their arriving time(the earlier they arrive, the more front they stand).

Input

The first line contains a positive integer
T(T<=100), referring to T test cases.
For each test case, the first line
has 4 positive integer n(1<=n<=1000), t(1<=t<=10), k(1<=k<=5),
m(1<=m<=1000), then following m lines , each line has a time(the time
format is hh:mm, 0<=hh<=23, 0<=mm<=59) and two positive integer
id(1<=id<=n), num(1<=num<=10), which means the brand number of the
fried rice and the number of the fried rice the customer needs.
Pay attention
that two or more customers will not come to the shop at the same time, the
arriving time of the customer will be ordered by the time(from early time to
late time)

Output

For each test case print m lines, each line contains a
time referring to the departure time of the customer. There is a blank line
between two test cases.

Sample Input

3

2 1 4 2

08:00 1 5

09:00 2 1

2 5 4 3

08:00 1 4

08:01 2 2

08:02 2 2

2 5 4 2

08:00 1 1

08:04 1 1

Sample Output

08:02

09:01

08:05

08:10

08:10

08:05

08:10

 1 #include"iostream"
 2 #include"cstdio"
 3 #include"cstring"
 4 #include"algorithm"
 5 using namespace std;
 6 const int ms=1010;
 7 const int lim=24*60;
 8 int T,n,k,t,m;
 9 int type[ms];
10 int last[ms];
11 void print(int time)
12 {
13     if(time>=lim)
14         time%=lim;
15     printf("%02d:%02d\n",time/60,time%60);
16 }
17 int main()
18 {
19     cin>>T;
20     while(T--)
21     {
22         cin>>n>>t>>k>>m;
23         memset(type,0,sizeof(type));
24         int hh,mm,a,b;
25         int cur=0;
26         for(int i=0;i<m;i++)
27         {
28             scanf("%d:%d %d %d",&hh,&mm,&a,&b);
29             hh=hh*60+mm;
30             if(type[a]>=b&&last[a]>=hh)
31             {
32                 type[a]-=b;
33                 print(last[a]+t);
34                 continue;
35             }
36             if(type[a]&&last[a]>=hh)
37             {
38                 b-=type[a];
39             }
40             int x=(b-1)/k+1;
41             cur=max(cur,hh)+t*x;
42             print(cur);
43             type[a]=x*k-b;
44             last[a]=cur-t;
45         }
46         if(T)
47             puts("");
48     }
49     return 0;
50 }

TIANKENG’s rice shop