1504B - Flip the Bits 技术标签: Codeforces 思维题目:https://codeforces.com/problemset/problem/1504/B题意:有一个长度为n的二进制字符串a。在一个操作中,您可以选择0和1符号相等的任意前缀a。然后前缀中的所有符号被反转:每个0变成1,每个1变成0。例如,假设a=0111010000。在第一个操
旅行传送门:https://codeforces.com/contest/1504/problem/B B. Flip the Bits time limit per test 1 second memory limit per test 256 megabytes input standard i
In an operation, you select a prefix of aa, and simultaneously invert the bits in the prefix (00 changes to 11 and 11 changes to 00) and reverse the order of the bits in the prefix. For example, if a=001011a=001011 and you select the prefix of length 33, it becomes 011011011011. ...
In an operation, you select a prefix of a, and simultaneously invert the bits in the prefix (0 changes to 1 and 1 changes to 0) and reverse the order of the bits in the prefix.For example, if a=001011 and you select the prefix of length 3, it becomes 011011. Then if you select...
CF1503D Flip the Cards 题解 Codeforces Luogu Description. 有\(n\)张牌,正面反面都写着两两不同的数。 你可以翻转若干张牌,然后任意排序。 要求正面的数构成单调递增序列,翻面构成单调递减序列。 问最少翻转次数,或判断无解。 Solution. 先考虑无解情况,如果存在一对\(a_i\le a_j,b_i\le b_j\)...
There are two binary stringsaaaandbbbof lengthnnn(a binary string is a string consisting of symbols000and111). In an operation, you select a prefix ofaaa, and simultaneously invert the bits in the prefix (000changes to111and111changes to000) and reverse the order of the bits in the prefi...
In an operation, you select a prefix of a, and simultaneously invert the bits in the prefix (0 changes to 1 and 1 changes to 0) and reverse the order of the bits in the prefix.For example, if a=001011 and you select the prefix of length 3, it becomes 011011. Then if you select...