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Educational Codeforces Round 1 F Cut Length(計算幾何)

題意:

N103,,
M100,

分析:

0.5s,,,O(mn2)T,

這裡寫圖片描述
AB,CN
2CDDEABQK,QK,KL
,Q+2,K2,0,QK2,KL0,QK

G