有向图判环 - Problem Statistics - CodeFun2000

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	7bnpNdKsWm	254ms	8.9 MiB	C++14(O2)	828 Bytes	2026-9-30 10:10:26
AC	PFs7vK3nNx	1740ms	33.9 MiB	Python 3	744 Bytes	2026-10-1 11:19:47
AC	luti	1740ms	85.7 MiB	Java	1.2 KiB	2026-9-22 14:08:19

ID: 4987
Time: 2000ms
Memory: 256MiB
Difficulty: 4
Tags: (None)
# Submissions: 8
Accepted: 3
Uploaded By: TaZi