#3189. 买笔做礼物（pencil）
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ID: 3189
Type: Default
1000ms
256MiB
Tried: 8
Accepted: 5
Difficulty: 10
Uploaded By:
paifuture
买笔做礼物（pencil）
Background
Description
Format
Input
Output
Samples
Limitation
1s, 1024KiB for each test case.