Codeforces-855B - Marvolo Gaunt's Ring - DP
题目:Professor Dumbledore is helping Harry destroy the Horcruxes. He went to Gaunt Shack as he suspected a Horcrux to be present there. He saw Marvolo Gaunt's Ring and identified it as a Horcrux. Alt...
题目:Professor Dumbledore is helping Harry destroy the Horcruxes. He went to Gaunt Shack as he suspected a Horcrux to be present there. He saw Marvolo Gaunt's Ring and identified it as a Horcrux. Alt...
题目:Volodya is an odd boy and his taste is strange as well. It seems to him that a positive integer number is beautiful if and only if it is divisible by each of its nonzero digits. We will not argu...
题目:题目描述做一只明媚的兔子…兔子都比较喜欢蹦蹦跳跳.但是蹦蹦跳跳的时候如果一直往高处跳的话就太累了,如果一直往低处跳的话就太无聊了.所以兔子希望跳的时候能够往上跳一步,往下跳一步,往上跳一步,往下跳一步….一共经过n个高度互不相同的位置(只要向上跳和向下跳相间分布就可以了,第一步可以往上跳也可以往下跳).如果下一个位置的高度比前一个位置高,就是往上跳,比前一个位置低,就是往下跳.兔子今天...