Woburn Challenge 2018-19 Round 2 - Junior Division
Problem 2: This Message will Self-Destruct
Ethan Hunt has received an audio message recorded by Alan Hunley, the secretary of the IMF, detailing a secret upcoming mission to Newfoundland. Ethan is well aware of a security protocol dictating that the message must self-destruct shortly after being heard, in order to prevent its information from falling into enemy hands. Normally, Alan would end the message by mentioning how quickly it will self-destruct, but it appears that he forgot to do so this time!
Fortunately, the message did come with a digital clock display instead, which is ticking downwards. Ethan assumes that the message will self-destruct when the clock reaches 0:00.
The current clock display may be represented by a string S with exactly four characters, in the format "
m:ss". The first character ("
m") is a digit "
9", and indicates the number of minutes remaining. The second character is always "
:". The last two characters ("
ss") form a number ("
59"), indicating the number of seconds additionally remaining. Specifically, the third character is a digit "
5", while the fourth character is a digit "
9". It's guaranteed that S is not already equal to "
Based on the clock display, help Ethan determine how many seconds he has left to get the message off his hands before it self-destructs!
The first and only line of input consists of a single string, S (having exactly 4 characters, in the format "
Output a single integer, the number of seconds remaining until the message self-destructs.
The message will self-destruct in 2 minutes and 7 seconds, which is equivalent to 127 seconds.
Point Value: 3 (partial)
Time Limit: 2.00s
Memory Limit: 16M
Added: Dec 14, 2018
C++03, PAS, C, HASK, ASM, RUBY, PYTH2, JAVA, PHP, SCM, CAML, PERL, C#, C++11, PYTH3
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