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Polar bears like unique arrays — that is, arrays without repeated elements.
You have got a unique array s with length n containing non-negative integers. Since you are good friends with Alice and Bob, you decide to split the array in two. Precisely, you need to construct two arrays a and b that are also of length n, w... |
Furlo and Rublo play a game. The table has n piles of coins lying on it, the i-th pile has ai coins. Furlo and Rublo move in turns, Furlo moves first. In one move you are allowed to:
* choose some pile, let's denote the current number of coins in it as x;
* choose some integer y (0 ≤ y < x; x1 / 4 ≤ y ≤ x1 / 2) a... |
A plane contains a not necessarily convex polygon without self-intersections, consisting of n vertexes, numbered from 1 to n. There is a spider sitting on the border of the polygon, the spider can move like that:
1. Transfer. The spider moves from the point p1 with coordinates (x1, y1), lying on the polygon border, ... |
Today is Devu's birthday. For celebrating the occasion, he bought n sweets from the nearby market. He has invited his f friends. He would like to distribute the sweets among them. As he is a nice guy and the occasion is great, he doesn't want any friend to be sad, so he would ensure to give at least one sweet to each f... |
"As everyone knows, bears love fish. But Mike is a strange bear; He hates fish! The even more strang(...TRUNCATED) |
"Julia is conducting an experiment in her lab. She placed several luminescent bacterial colonies in (...TRUNCATED) |
"You are given a directed graph G with n vertices and m arcs (multiple arcs and self-loops are allow(...TRUNCATED) |
"Once Bob saw a string. It contained so many different letters, that the letters were marked by numb(...TRUNCATED) |
"You have matrix a of size n × n. Let's number the rows of the matrix from 1 to n from top to botto(...TRUNCATED) |
"You are given an infinite periodic array a0, a1, ..., an - 1, ... with the period of length n. Form(...TRUNCATED) |
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