C. Bear and Prime 100 题目连接: http://www.codeforces.com/contest/680/problem/C Description This is an interactive problem. In the output section below you will see the information about flushing the output. Bear Limak thinks of some hidden number - an i…

C. Bear and Prime 100 time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output This is an interactive problem. In the output section below you will see the information about flushing the output. Bea…

B. Bear and Finding Criminals 题目连接: http://www.codeforces.com/contest/680/problem/B Description There are n cities in Bearland, numbered 1 through n. Cities are arranged in one long row. The distance between cities i and j is equal to |i - j|. Limak…

A. Bear and Five Cards 题目连接: http://www.codeforces.com/contest/680/problem/A Description A little bear Limak plays a game. He has five cards. There is one number written on each card. Each number is a positive integer. Limak can discard (throw out) s…

Brain's Photos 题目链接: http://codeforces.com/contest/707/problem/A Description Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpone his plans of taking over the world, but to becom…

B. Bear and Finding Criminals time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There are n cities in Bearland, numbered 1 through n. Cities are arranged in one long row. The distance betwee…

C. Efim and Strange Grade 题目连接: http://codeforces.com/contest/719/problem/C Description Efim just received his grade for the last test. He studies in a special school and his grade can be equal to any positive decimal fraction. First he got disappoin…

A. Whose sentence is it? Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/312/problem/A Description One day, liouzhou_101 got a chat record of Freda and Rainbow. Out of curiosity, he wanted to know which sentences were said…

A. Vitya in the Countryside 题目连接: http://codeforces.com/contest/719/problem/A Description Every summer Vitya comes to visit his grandmother in the countryside. This summer, he got a huge wart. Every grandma knows that one should treat warts when the…

A. Meeting of Old Friends 题目连接: http://codeforces.com/contest/714/problem/A Description Today an outstanding event is going to happen in the forest - hedgehog Filya will come to his old fried Sonya! Sonya is an owl and she sleeps during the day and s…