题目链接: 传送门 They Are Everywhere time limit per test:2 second memory limit per test:256 megabytes Description Sergei B., the young coach of Pokemons, has found the big house which consists of n flats ordered in a row from left to right. It is possib
[尺取法]Jurisdiction Disenchantment PROBLEM 时间限制: 1 Sec 内存限制: 128 MB 题目描述 The Super League of Paragons and Champions (SLPC) has been monitoring a plot by a corrupt politician to steal an election. In the past week, the politican has used a mind-control
题目链接: C. They Are Everywhere time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Sergei B., the young coach of Pokemons, has found the big house which consists of n flats ordered in a row fr
String Problem Description There is a string S.S only contain lower case English character.(10≤length(S)≤1,000,000)How many substrings there are that contain at least k(1≤k≤26) distinct characters? Input There are multiple test cases. The first lin