def compare(A, B) :
    if A[0] < B[0] :
        return True
    elif A[0] == B[0] :
        return A[1] <= B[1]
    else :
        return False

def crossProduct(A, B, C) :
    crossValue = (B[0] - A[0]) * (C[1] - A[1]) - (B[1] - A[1]) * (C[0] - A[0])
    if crossValue > 0 :
        return 1
    elif crossValue < 0 :
        return -1
    else :
        return 0

x1, y1, x2, y2 = map(int, input().split())
x3, y3, x4, y4 = map(int, input().split())

A, B, C, D = [x1, y1], [x2, y2], [x3, y3], [x4, y4]
if not compare(A, B) :
    A, B = B, A

if not compare(C, D) :
    C, D = D, C

crossABCD = crossProduct(A, B, C) * crossProduct(A, B, D)
crossCDAB = crossProduct(C, D, A) * crossProduct(C, D, B)

ans = 0

if crossABCD == 0 and crossCDAB == 0 :
    if compare(A, D) and compare(C, B) :
        ans = 1

elif crossABCD <= 0 and crossCDAB <= 0 :
    ans = 1

print(ans)