Contest Clarifications

Problem 1001 关于题意

fry | 2015-08-08 19:19:16Author

5 0 2 2 0 0 0 2 2 0 1 应该输出多少?

admin | 2015-08-08 20:11:01# 11

选定n个点构成正n变形

选定n个点构成正n变形