Codeforces - 1166D - Cute Sequences地址http://codeforces.com/contest/1166/problem/D原文地址https://www.lucien.ink/archives/433题目Given a positive integer $m$, we say that a sequence $x_1, x_2, \dots, x_n$...
Codeforces - 1166C - A Tale of Two Lands地址http://codeforces.com/contest/1166/problem/C原文地址https://www.lucien.ink/archives/432题目The legend of the foundation of Vectorland talks of two integers $x$ a...
Codeforces - 1166B - All the Vowels Please地址http://codeforces.com/contest/1166/problem/B原文地址https://www.lucien.ink/archives/431题目Tom loves vowels, and he likes long words with many vowels. His favo...
Codeforces - 1166A - Silent Classroom地址http://codeforces.com/contest/1166/problem/A原文地址https://www.lucien.ink/archives/430题目There are $n$ students in the first grade of Nlogonia high school. The pr...