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nariaki3551/ssample.py

Last active December 8, 2016 08:04
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ssample.py
from functools import lru_cache
@lru_cache(maxsize=None)
def fib(num):
if num == 1 or num == 2:
return 1
else:
return fib(num-1) + fib(num-2)
print(fib(int(input())))
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