Crazy Fences (Bronze)
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After visiting a modern art museum, Farmer John decides to re-design his farm by moving all of the N (1 <= N <= 500) fences between his pastures! Each fence is described by either a horizontal or a vertical line segment in the 2D plane. If two fences meet, they do so only at their endpoints.
FJ has C cows (1 <= C <= 500) on his farm. Each cow resides at a point in the 2D plane that is not on any fence, and no two cows reside at the same point. Two cows are said to be in the same community if one could walk to the other without touching any fences. Please help FJ determine the size of the largest community.
Line 1: Two space-separated integers, N and C.
Lines 2..1+N: Each line contains four integers: x1, y1, x2, y2. These describe a fence running from point (x1,y1) to point (x2,y2). Each fence is either vertical (x1=x2) or horizontal (y1=y2). All coordinates are in the range 0 .. 1,000,000.
Lines 2+N..1+N+C: Each line contains two integers x and y describing a cow at position (x,y). All coordinates are in the range 0 .. 1,000,000.
The number of cows in the largest community.
crazy.incrazy.out7 3
0 0 10 0
10 0 10 5
12 5 10 5
10 5 1 5
12 5 12 7
0 7 12 7
0 7 0 0
3 4
6 6
17 32Output details: Cows #1 and #2 belong to the same community. Cow #3 cannot reach them without crossing a fence.
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출처 올림피아드 > USACO > 2012-2013 > December > Bronze
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Crazy Fences (Bronze)
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Crazy Fences (Bronze)