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popey456963/alternating.py

Created May 28, 2016 20:06
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Alternating Sign Sequence
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alternating.py
n,k=int(input()),0
if not n-1%3:k=0
elif not n%3:k=(n/3)+1
else:k=-(n/3)+1
print(k)
@developius
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a=[]
n=input()
for i in range(1,n+2):a.extend([i,0,i*-1])
print a[n]

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