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C. Kuro and Walking Routetime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputKuro is living in a country called Uberland, consisting of n towns, numbe...

Katie, Kuro and Shiro are best friends. They have known each other since kindergarten. That's why they often share everything with each other and work together on some very hard problems.Today is Shir...

题目描述After the big birthday party, Katie still wanted Shiro to have some more fun. Later, she came up with a game called treasure hunt. Of course, she invited her best friends Kuro and Shiro to play wi...

Polycarp likes arithmetic progressions. A sequence [a1,a2,…,an] is called an arithmetic progression if for each i (1≤i<n) the value ai+1−ai is the same. For example, the sequences [42], [5,5,5], [2...

The busses in Berland are equipped with a video surveillance system. The system records information about changes in the number of passengers in a bus after stops.If x is the number of passengers in a...