time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consisting of s c…
Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consisting of s characters. The first participant types one character in v1 milliseconds and has ping t1 milliseconds. The secon…
Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consisting of s characters. The first participant types one character in v1 milliseconds and has ping t1 milliseconds. The secon…
Codeforces Round #539 (Div. 1) A. Sasha and a Bit of Relax description 给一个序列\(a_i\),求有多少长度为偶数的区间\([l,r]\)满足\([l,mid]\)的异或和等于\([mid+1,r]\)的异或和. solution 等价于询问有多少长度为偶数的区间异或和为\(0\). 只需要两个位置的异或前缀和与下标奇偶性相同即可组成一个合法区间. #include<cstdio> #include<algorith…
VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only)E. The Art of Dealing with ATM Time Limit: 2 Sec Memory Limit: 256 MBSubmit: xxx Solved: 2xx 题目连接 http://codeforces.com/contest/529/problem/E Description ATMs of a well-known bank of a sm…
A. Key races time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Two boys decided to compete in text typing on the site "Key races". During the competition, they have to type a text consis…
