focal loss计算 - Problem Statistics - CodeFun2000

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	TaZi	333ms	13.1 MiB	Python 3	344 Bytes	2025-12-1 20:42:43
AC	CodeFunf1e0256225	338ms	13.1 MiB	Python 3	544 Bytes	2025-12-6 23:08:27
AC	胖胖	343ms	13.1 MiB	Python 3	547 Bytes	2025-12-8 21:26:13

ID: 3735
Time: 1000ms
Memory: 256MiB
Difficulty: 5
Tags: (None)
# Submissions: 4
Accepted: 3
Uploaded By: TaZi