A. Slime Combining 题目连接: http://www.lydsy.com/JudgeOnline/problem.php?id=2768 Description Your friend recently gave you some slimes for your birthday. You have n slimes all initially with value 1. You are going to play a game with these slimes. Initi…
B. Guess the Permutation 题目连接: http://www.codeforces.com/contest/618/problem/B Description Bob has a permutation of integers from 1 to n. Denote this permutation as p. The i-th element of p will be denoted as pi. For all pairs of distinct integers i,…
F. Double Knapsack 题目连接: http://www.codeforces.com/contest/618/problem/F Description You are given two multisets A and B. Each multiset has exactly n integers each between 1 and n inclusive. Multisets may contain multiple copies of the same number. Y…
E. Robot Arm 题目连接: http://www.codeforces.com/contest/618/problem/E Description Roger is a robot. He has an arm that is a series of n segments connected to each other. The endpoints of the i-th segment are initially located at points (i - 1, 0) and (i…
A. Little Artem and Presents 题目连接: http://www.codeforces.com/contest/669/problem/A Description Little Artem got n stones on his birthday and now wants to give some of them to Masha. He knows that Masha cares more about the fact of receiving the prese…
A. Bear and Reverse Radewoosh 题目连接: http://www.codeforces.com/contest/658/problem/A Description Limak and Radewoosh are going to compete against each other in the upcoming algorithmic contest. They are equally skilled but they won't solve problems in…
A. Hongcow Learns the Cyclic Shift 题目连接: http://codeforces.com/contest/745/problem/A Description Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Being a dutiful student, he immediately learns how t…
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…
B. Code obfuscation 题目连接: http://codeforces.com/contest/765/problem/B Description Kostya likes Codeforces contests very much. However, he is very disappointed that his solutions are frequently hacked. That's why he decided to obfuscate (intentionally…