#2981. 鸡兔同笼（拓展30-小明在桌了摆了12个白棋子，每2个白棋子插入3个黑棋子，共可插入多少个黑棋子?）
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ID: 2981
Type: Default
1000ms
256MiB
Tried: 21
Accepted: 15
Difficulty: 4
Uploaded By:
paifuture
Tags> 鸡兔同笼（拓展30-小明在桌了摆了12个白棋子，每2个白棋子插入3个黑棋子，共可插入多少个黑棋子?）
Background
Description
小明在桌了摆了12个白棋子，每2个白棋子插入3个黑棋子，共可插入多少个黑棋子?
Format
Input
Output
Samples
33
Limitation
1s, 1024KiB for each test case.
Statistics
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