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import random
def distance(x1, y1, x2, y2):
'''
>>> distance(0, 0, 3, 0)
3
>>> distance(1, 1, 3, 3)
4
'''
return abs(x1 - x2) + abs(y1 - y2)
def direction_to(rx, ry, fx, fy):
'''
>>> direction_to(0, 0, 3, 0)
'R'
>>> direction_to(0, 0, 0, 3)
'D'
>>> direction_to(6, 0, 3, 0)
'L'
>>> direction_to(0, 6, 0, 3)
'U'
'''
moves = []
if fx < rx:
moves.append('L')
elif fx > rx:
moves.append('R')
if fy < ry:
moves.append('U')
elif fy > ry:
moves.append('D')
return random.choice(moves)
def closest_factory(whoami, state, rx, ry):
closest_factory = None
closest_distance = 9999999
for fx, fy in state.factories:
if state.allegiances.get((fx, fy)) != whoami:
d = distance(rx, ry, fx, fy)
if d < closest_distance:
closest_factory = (fx, fy)
closest_distance = d
return closest_distance, closest_factory
def manhattan(whoami, state):
orders = []
for rx, ry, energy in state.robots_by_player[whoami]:
distance, factory = closest_factory(whoami, state, rx, ry)
if factory is None or random.random() < 0.1:
orders.append(random.choice('UDLRP'))
elif distance == 0:
orders.append('P')
else:
fx, fy = factory
orders.append(direction_to(rx, ry, fx, fy))
return orders
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