Morris' Blog

2012-05-05 22:18:41Morris

[UVA] 11650 - Mirror Clock

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  E

  Mirror
  Clock
Input: Standard Input
Output: Standard Output

 
 
Little Onuvob has learnt to read
wall clock.Very often he loudly announces the time. He has a big clock in his
room. There is also a mirror in the opposite side of the clock. Few days ago
his mother noticed that sometimes Onuvob is announcing wrong time. She became
worried and after some investigation she found, Onuvob has no problem in
reading time from the clock, the thing is sometimes he reads from the clock in
the mirror. So she told him
“Onuvob, you shouldn’t read time
from the clock in the mirror.”
 
“But why ma?” curious Onuvob
asked. 
 
“Because it gives wrong time”
mother replied.
 
Now Onuvob looked at the two
clocks and realized his mother was telling the truth. Two clocks were not
matching. He thought for some time and shouted, “But ma, we can calculate the
real time from the clock in the mirror, can’t we?”
 
Can we? Now you have to answer. 
InputThe first line of the input
contains an integer T (T < 1000), number of test cases. Each of the
following T lines will contain the time Onuvob reads from the clock in the
mirror. The time will be in the following format: HH:MM
 
Hours and minutes both are
integer and the time is always valid.
OutputFor each line of Input you have
to produce one line of output which will contain the real time, in the same format,
namely:
HH:MM 
 
See sample input and output for
more clarification.
 
Sample
Input                              Output
for Sample Input
 
  2
12:00
10:09
  12:00
01:
  51

 


#include <stdio.h>

int main() {
    int t, h, w;
    scanf("%d", &t);
    while(t--) {
        scanf("%d:%d", &h, &w);
        h = 11-h + (w == 0);
        if(h <= 0)   h += 12;
        if(w != 0)
            w = 60-w;
        printf("%02d:%02d\n", h, w);
    }
    return 0;
}