文章目录 1.[G. Special Permutation](https://codeforces.com/problemset/problem/1352/G)2.[D. Constructing the Array](https://codeforces.com/problemset/problem/1353/D)3.[C2. k-LCM (hard version)](https://codeforces.com/problemset/problem/1497/C2)4.[C. Circle …