[파이썬] 17387 선분 교차 2
li = [list(map(int, input().split())) for _ in range(2)] a, b, c, d = li[0][:2], li[0][2:], li[1][:2], li[1][2:] def ccw(x1, y1, x2, y2, x3, y3): c = (x2 - x1) * (y3 - y1) - (y2 - y1) * (x3 - x1) return 0 if c == 0 else c // abs(c) l1 = ccw(*a, *b, *c) * ccw(*a, *b, *d) l2 = ccw(*c, *d, *a) * ccw(*c, *d, *b) if not l1 and not l2: if a > b: a, b = b, a if c > d: c, d = d, c print(1 if a
