Problem
A 拔河 1000ms 256MiB Submit
B 一丝不挂 1000ms 256MiB Submit
C 麻将 1000ms 256MiB Submit
D ABC谜题 1000ms 256MiB Submit

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

Oh, there is no clarification!

0228B

Status: Done
Rule: IOI
Problem: 4
Start at: 2026-2-28 8:00
End at: 2026-2-28 11:30
Duration: 3.5 hour(s)
Host: hey_muzili
Partic.: 71