import sys
input = sys.stdin.readline

N = int(input())

DP = [0] * 1001
DP[1] = 1
DP[2] = 3

for i in range(3, 1001):
    DP[i] = DP[i-1] + (DP[i-2] * 2)

print (DP[N] % 10007)

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