Comments
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Waited ages for a Div. 4 and it spawns exactly during my exams week. Classic.
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the problem C Div2 statement was very bad. where i understand the inverse of the bitmask of the number as reverse each 1's to 0's and the vise versa. until see the message that refer that the reverse mean reverse the order of digits. i think if it was more accurate i will solve it very faster!
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good contest. hope the writer to make others in future.
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I'm training these days on Div3 contests and Usually solve 4 or 5 problems. but this contest i only could solve 1 problem. that made me so frustrated since i was hoping to up to Pupil again.
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so bad contest as Div3 contest. i show that it was should be rated as Div2.