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5158: P8668 [蓝桥杯 2018 省 B] 螺旋折线
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
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Input
Output
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0 1
Sample Output
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3
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https://www.luogu.com.cn/problem/P8668
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