Are These Scores Possible?
Python 2, 58 bytes

lambda a,b,A,B:(A-a)*(B-b)&lt;(a-b)*(A-B)*((a+b)/5+(A+B)/5&amp;1)

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Outputs True/False reversed
59 bytes

lambda a,b,A,B:A*B+a*(b-A-B)&lt;(b-a)*[A,B][(a+b)/5+(A+B)/5&amp;1]

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59 bytes

lambda a,b,A,B:A*B+b*a&lt;[A*b+B*a,a*A+b*B][(a+b)/5+(A+B)/5&amp;1]

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62 bytes

a,b,A,B=input()
if(a+b)/5+(A+B)/5&amp;1:a,b=b,a
print(A-a)*(B-b)&lt;0

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