原题链接:Dashboard - Codeforces Round #849 (Div. 4) - Codeforces 目录 A. Codeforces Checking B. Following Directions C. Prepend and Append D. Distinct Split E. Negatives and Positives F. Range Update Point Query G1. Teleporters (Easy Version) G2....
文章目录 A. Codeforces Checking题意思路代码 B. Following Directions题意思路代码 C. Prepend and Append题意思路代码 D. Distinct Split题意思路代码 E. Negatives and Positives题意思路代码 F. Range Update Point Query题意思路代码 G1. Teleporters (Easy Version)题...
Given an array?a?consisting of?nn?elements, find the maximum possible sum the array can have after performing the following operation?any number of times: Choose?2?adjacent?elements and flip both of their signs. In other words choose an index?i?such that...
Let's denote the?f(x) function for a string?x?as the number of distinct characters that the string contains. For example?f(abc)=3,?f(bbbbb)=1, and?f(babacaba)=3. Given a string?s, split it into two non-empty strings?a?and?b?such that?f(a)...