26 lines
496 B
Python
26 lines
496 B
Python
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import sys
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W,H = 1000,1000
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grid = [ [ 0 for _ in range(W) ] for _ in range(H) ]
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L = eval(sys.stdin.read())
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sign = lambda x: (1, -1)[x<0]
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n=0
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def incr(x,y):
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global n
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grid[x][y]+=1
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if grid[x][y]==2:
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n+=1
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for ((x1,y1),(x2,y2)) in L:
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if x1 == x2:
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for y in range(min(y1,y2), max(y1,y2)+1):
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incr(x1,y)
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elif y1 == y2:
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for x in range(min(x1,x2), max(x1,x2)+1):
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incr(x,y1)
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else:
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r = abs(x1-x2)
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i = sign(x2-x1)
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j = sign(y2-y1)
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for a in range(r+1):
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incr(x1+a*i,y1+a*j)
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print(n)
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