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a = 1
b = 1
n = int(input())
if n > 2:
    for i in range(n - 2):
        c = a + b
        a = b
        b = c
print(b)

Success #stdin #stdout 0.01s 7260KB

stdin

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stdout

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https://ideone.com/NrFpkC

language:

Python (cpython 2.7.16)

created:

visibility:

public

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