Login
Register
QOJ.ac
QOJ
QOJ
Contests
Category
Problems
Submissions
Hack!
Time Limit: 7 s
Memory Limit: 512 MB
Total points: 100
2018 北京队选拔赛 Day 2 (BJOI 2018 Day 2) (NOI 2018 北京队选拔赛)
B. 链上二次求和
Statistics
Statement
Submit
Custom Test
Back to the contest
Submit
Run