Hi, I want to write a program in Gecode for tow types of instances: the constrained instances (where all constraints must be satisfied) and the unconstrained instances (where one constraint or more can be not satisfied if the solution is optimal). The question is how th do for the second type of constraint. ie, not necessarly all constraints be satisfied. ( ie, if exists an operator like "OR" to write between constraints or how to do ?). Thank you in advance.Best regards.
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