Contest Clarifications

Problem 1002 1002

jianrenmeng | 2015-09-26 19:32:18Author

（1, 3）（4, 5）并集长度是多少啊，数学不好求教啊

admin | 2015-09-26 19:34:34# 1

并集… (3-1)+(5-4)

jianrenmeng | 2015-09-26 19:34:57# 2

3q