TypeError: unsupported operand type(s) for *: 'IntVar' and 'float'

[Mohammad Mufassir Khan]

Hi,

I'm trying to implement a constraint as follows:

routing.solver().Add(capacity_dimension.CumulVar(idx) * routing.ActiveVar(idx) >= capacity_dimension.CumulVar(routing.End(v)) * 0.5 )

It gives error:

TypeError: unsupported operand type(s) for *: 'IntVar' and 'float'

How can I resolve this. I want to implement capacity_dimension.CumulVar(idx) * routing.ActiveVar(idx) should be more than half of capacity_dimension.CumulVar(routing.End(v)).

TIA

[Mohammad Mufassir Khan]

This is solved. Just needed to multiply the constraint by 2 on both sides.

2 * capacity_dimension.CumulVar(idx) * routing.ActiveVar(idx) >= capacity_dimension.CumulVar(routing.End(v))

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