WW = 1200
WH = 900
initials = {
        'planet1.png':(1000, 480),
        'planet2.png':(175, 525),
        'planet3.png':(400, 350),
        'planet4.png':(650, 525),
        'planet5.png':(775, 250),
        'planet6.png':(850, 700),
        'planet7.png':(450, 700)
        }

cost_matrix = {
 ('planet1', 'planet1'): 0.0,
 ('planet1', 'planet2'): 8.0,
 ('planet1', 'planet3'): 6.0,
 ('planet1', 'planet4'): 3.0,
 ('planet1', 'planet5'): 3.0,
 ('planet1', 'planet6'): 2.0,
 ('planet1', 'planet7'): 5.0,
 ('planet2', 'planet1'): 8.0,
 ('planet2', 'planet2'): 0.0,
 ('planet2', 'planet3'): 2.0,
 ('planet2', 'planet4'): 4.0,
 ('planet2', 'planet5'): 6.0,
 ('planet2', 'planet6'): 6.0,
 ('planet2', 'planet7'): 3.0,
 ('planet3', 'planet1'): 6.0,
 ('planet3', 'planet2'): 2.0,
 ('planet3', 'planet3'): 0.0,
 ('planet3', 'planet4'): 3.0,
 ('planet3', 'planet5'): 3.0,
 ('planet3', 'planet6'): 5.0,
 ('planet3', 'planet7'): 3.0,
 ('planet4', 'planet1'): 3.0,
 ('planet4', 'planet2'): 4.0,
 ('planet4', 'planet3'): 3.0,
 ('planet4', 'planet4'): 0.0,
 ('planet4', 'planet5'): 3.0,
 ('planet4', 'planet6'): 2.0,
 ('planet4', 'planet7'): 2.0,
 ('planet5', 'planet1'): 3.0,
 ('planet5', 'planet2'): 6.0,
 ('planet5', 'planet3'): 3.0,
 ('planet5', 'planet4'): 3.0,
 ('planet5', 'planet5'): 0.0,
 ('planet5', 'planet6'): 4.0,
 ('planet5', 'planet7'): 5.0,
 ('planet6', 'planet1'): 2.0,
 ('planet6', 'planet2'): 6.0,
 ('planet6', 'planet3'): 5.0,
 ('planet6', 'planet4'): 2.0,
 ('planet6', 'planet5'): 4.0,
 ('planet6', 'planet6'): 0.0,
 ('planet6', 'planet7'): 4.0,
 ('planet7', 'planet1'): 5.0,
 ('planet7', 'planet2'): 3.0,
 ('planet7', 'planet3'): 3.0,
 ('planet7', 'planet4'): 2.0,
 ('planet7', 'planet5'): 5.0,
 ('planet7', 'planet6'): 4.0,
 ('planet7', 'planet7'): 0.0}

WW = 1200
WH = 900
initials = {
        'planet1.png':(1000, 480),
        'planet2.png':(175, 525),
        'planet3.png':(400, 350),
        'planet4.png':(650, 525),
        'planet5.png':(775, 250),
        'planet6.png':(850, 700),
        'planet7.png':(450, 700)
        }

cost_matrix = {
 ('planet1', 'planet1'): 0.0,
 ('planet1', 'planet2'): 8.0,
 ('planet1', 'planet3'): 6.0,
 ('planet1', 'planet4'): 3.0,
 ('planet1', 'planet5'): 3.0,
 ('planet1', 'planet6'): 2.0,
 ('planet1', 'planet7'): 5.0,
 ('planet2', 'planet1'): 8.0,
 ('planet2', 'planet2'): 0.0,
 ('planet2', 'planet3'): 2.0,
 ('planet2', 'planet4'): 4.0,
 ('planet2', 'planet5'): 6.0,
 ('planet2', 'planet6'): 6.0,
 ('planet2', 'planet7'): 3.0,
 ('planet3', 'planet1'): 6.0,
 ('planet3', 'planet2'): 2.0,
 ('planet3', 'planet3'): 0.0,
 ('planet3', 'planet4'): 3.0,
 ('planet3', 'planet5'): 3.0,
 ('planet3', 'planet6'): 5.0,
 ('planet3', 'planet7'): 3.0,
 ('planet4', 'planet1'): 3.0,
 ('planet4', 'planet2'): 4.0,
 ('planet4', 'planet3'): 3.0,
 ('planet4', 'planet4'): 0.0,
 ('planet4', 'planet5'): 3.0,
 ('planet4', 'planet6'): 2.0,
 ('planet4', 'planet7'): 2.0,
 ('planet5', 'planet1'): 3.0,
 ('planet5', 'planet2'): 6.0,
 ('planet5', 'planet3'): 3.0,
 ('planet5', 'planet4'): 3.0,
 ('planet5', 'planet5'): 0.0,
 ('planet5', 'planet6'): 4.0,
 ('planet5', 'planet7'): 5.0,
 ('planet6', 'planet1'): 2.0,
 ('planet6', 'planet2'): 6.0,
 ('planet6', 'planet3'): 5.0,
 ('planet6', 'planet4'): 2.0,
 ('planet6', 'planet5'): 4.0,
 ('planet6', 'planet6'): 0.0,
 ('planet6', 'planet7'): 4.0,
 ('planet7', 'planet1'): 5.0,
 ('planet7', 'planet2'): 3.0,
 ('planet7', 'planet3'): 3.0,
 ('planet7', 'planet4'): 2.0,
 ('planet7', 'planet5'): 5.0,
 ('planet7', 'planet6'): 4.0,
 ('planet7', 'planet7'): 0.0}
