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Problem 2817. -- [ZJOI2012]波浪

2817: [ZJOI2012]波浪

Time Limit: 100 Sec  Memory Limit: 128 MB
Submit: 441  Solved: 147
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Description

 http://www.lydsy.com/JudgeOnline/upload/zjoi2012.pdf

Input

Output

Sample Input

Sample Output

HINT

Source

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