每日新增与次日三十日留存 - Problem Statistics - CodeFun2000

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	luti	84ms	7.8 MiB	C++14(O2)	934 Bytes	2026-10-19 11:54:53

ID: 5514
Time: 1000ms
Memory: 256MiB
Difficulty: 4
Tags: (None)
# Submissions: 4
Accepted: 1
Uploaded By: TaZi