链接: https://codeforces.com/contest/1215/problem/D 题意: Monocarp and Bicarp live in Berland, where every bus ticket consists of n digits (n is an even number). During the evening walk Monocarp and Bicarp found a ticket where some of the digits have bee…
链接: https://codeforces.com/contest/1215/problem/C 题意: Monocarp has got two strings s and t having equal length. Both strings consist of lowercase Latin letters "a" and "b". Monocarp wants to make these two strings s and t equal to each…
链接: https://codeforces.com/contest/1215/problem/B 题意: You are given a sequence a1,a2,-,an consisting of n non-zero integers (i.e. ai≠0). You have to calculate two following values: the number of pairs of indices (l,r) (l≤r) such that al⋅al+1-ar−1⋅ar…
链接: https://codeforces.com/contest/1215/problem/A 题意: The final match of the Berland Football Cup has been held recently. The referee has shown n yellow cards throughout the match. At the beginning of the match there were a1 players in the first team…
本题地址: https://codeforces.com/contest/1215/problem/B 本场比赛A题题解:https://www.cnblogs.com/liyexin/p/11535519.html B. The Number of Products time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You…
---恢复内容开始--- output standard output The final match of the Berland Football Cup has been held recently. The referee has shown n yellow cards throughout the match. At the beginning of the match there were a_1 players in the first team and a_2 players…
