Emuskald is a well-known illusionist. One of his trademark tricks involves a set of magical boxes. The essence of the trick is in packing the boxes inside other...
Dima got into number sequences. Now he's got sequence a1, a2, ..., an, consisting of n positive integers. Also, Dima has got a function f(x), which can be defin...
这个题还是不太懂，下面附上的是大佬的题解(https://zhanghuimeng.github.io/post/codeforces-1102e-monotonic-renumeration/) E. Monotonic Renumeration time limit per test2 seconds mem...
After Asgard was destroyed, tanker brought his soldiers to earth, and at the same time took on the important task of protecting the peace of the earth. The best...
The hot summer came so quickly that Xiaoming and Xiaohong decided to buy a big and sweet watermelon. But they are two very strange people. They are even-numbere...
You are given an array aa consisting of nn integers. Beauty of array is the maximum sum of some consecutive subarray of this array (this subarray may be empty)....
