摘要：AtCoder Beginner Contest 359 (3/6) A - Count Takahashi Problem Statement You are given \(N\) strings. The \(i\)-th string \(S_i\) \((1 \leq i \leq N)\ 阅读全文

摘要：AtCoder Beginner Contest 358 (4/7) A - Welcome to AtCoder Land Problem Statement Takahashi is heading to AtCoder Land. There is a signboard in front o 阅读全文

摘要：AtCoder Beginner Contest 357 C - Sierpinski carpet BFS Problem Statement For a non-negative integer \(K\), we define a level-\(K\) carpet as follows: 阅读全文

摘要：NewCoder Weekly Contest 46 C 爱音开灯 简单数论 Problem Statement 有无穷个灯排成一排，编号为从 1 开始，初始时所有灯都是关闭的。改变第 \(i\) 个灯的开闭状态会同时改变所有编号为 \(i\) 倍数的灯的开闭状态。 Anon会从 1 到 \(n\) 阅读全文