nobleman

C. Zebras time limit per test1 second memory limit per test512 megabytes Oleg writes down the history of the days he lived. For each day he decides if it was good or bad. Oleg calls a non-empty seq...

C. Kefa and Park time limit per test2 seconds memory limit per test256 megabytes Kefa decided to celebrate his first big salary by going to the restaurant. He lives by an unusual park. The park is...

D. Fight Against Traffic time limit per test1 second memory limit per test256 megabytes Little town Nsk consists of n junctions connected by m bidirectional roads. Each road connects two distinct j...

C. Kyoya and Colored Balls time limit per test2 seconds memory limit per test256 megabytes Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are label...

A. Milking cows time limit per test1 second memory limit per test256 megabytes Iahub helps his grandfather at the farm. Today he must milk the cows. There are n cows sitting in a row, numbered from...

A. Bear and Friendship Condition time limit per test1 second memory limit per test256 megabytes Bear Limak examines a social network. Its main functionality is that two members can become friends (...

D. Beautiful numbers time limit per test4 seconds memory limit per test256 megabytes Volodya is an odd boy and his taste is strange as well. It seems to him that a positive integer number is beauti...

E. Divisibility by 25 time limit per test1 second memory limit per test256 megabytes You are given an integer n from 1 to 1018 without leading zeroes. In one move you can swap any two adjacent digits ...