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25-1.py
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25-1.py
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p = 0
a = {}
state = 'A'
for i in range(12399302):
if state == 'A':
if a.get(p, 0) == 0:
a[p] = 1
p += 1
state = 'B'
else:
del a[p]
p += 1
state = 'C'
elif state == 'B':
if a.get(p, 0) == 0:
p -= 1
state = 'A'
else:
del a[p]
p += 1
state = 'D'
elif state == 'C':
if a.get(p, 0) == 0:
a[p] = 1
p += 1
state = 'D'
else:
a[p] = 1
p += 1
state = 'A'
elif state == 'D':
if a.get(p, 0) == 0:
a[p] = 1
p -= 1
state = 'E'
else:
del a[p]
p -= 1
state = 'D'
elif state == 'E':
if a.get(p, 0) == 0:
a[p] = 1
p += 1
state = 'F'
else:
a[p] = 1
p -= 1
state = 'B'
elif state == 'F':
if a.get(p, 0) == 0:
a[p] = 1
p += 1
state = 'A'
else:
a[p] = 1
p += 1
state = 'E'
print len([x for x in a if a[x] == 1])