from support import cost
from support import swap

def consider( cities, tour, i1, i2 ) :
    ''' Determines whether swapping tour elements i1 and i2 produce
        a better tour.  If so, True is returned; otherwise, False is
        returned and tour is left unchanged.
    '''
    
    pass

if ( __name__ == "__main__" ) :
    import test_heuristic

    test_heuristic.test_consider()