Problem
A 序列异或(xor)
B 乘法破译(multiplication)
C 幸运数字(four)
D 排列计数(permutation)

According to the contest rules, you cannot view your submission details at current.

Oh, there is no clarification!

20240626训练赛

Status: Done
Rule: OI
Problem: 4
Start at: 2024-6-26 16:00
End at: 2024-6-26 20:30
Duration: 4.5 hour(s)
Host: polelg
Partic.: 10