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read = open("shell.in")

n = int(read.readline())

# shell_at_pos[i] stores the label of the shell located at position i
# The shells can be placed arbitrarily at the start.
shell_at_pos = [i for i in range(3)]

# counter[i] stores the number of times the shell with label i was picked
counter = [0 for _ in range(3)]

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N = 3  # The number of buckets (which is 3)
TURN_NUM = 100

# capacity[i] is the maximum capacity of bucket i
capacity = [0 for _ in range(N)]
# milk[i] is the current amount of milk in bucket i
milk = [0 for _ in range(N)]
with open("mixmilk.in") as read:
	for i in range(N):
		capacity[i], milk[i] = map(int, read.readline().split())