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Problem 5420. -- [Noi2018]多边形

5420: [Noi2018]多边形

Time Limit: 200 Sec  Memory Limit: 512 MB
Submit: 6  Solved: 2
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Description

www.lydsy.com/JudgeOnline/upload/noi2018day2.pdf

Input

Output

Sample Input

Sample Output

HINT

Source

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