from copy import deepcopy
MOD = 10 ** 9 + 7
    
n = int(input())
if n % 2 == 0:
    n //= 2
    A = [[0, 1], [1, 1]]
    B = [0, 1]
    while n:
        if n & 1:
            C = [0, 0]
            for i in range(2):
                for j in range(2):
                    C[i] += A[i][j] * B[j]
                    C[i] %= MOD
            B = C[:]
        n >>= 1
        C = [[0, 0], [0, 0]]
        for i in range(2):
            for j in range(2):
                for k in range(2):
                    C[i][j] += A[i][k] * A[k][j]
                    C[i][j] %= MOD
        A = deepcopy(C)
    print(B[1])
else:
    A = [[0, 0, 0, 1],
         [1, 0, 1, 0],
         [2, 1, 1, 0],
         [1, 0, 0, 1]]
    B = [0, 0, 0, 1]
    n //= 2
    while n:
        if n & 1:
            C = [0] * 4
            for i in range(4):
                for j in range(4):
                    C[i] += A[i][j] * B[j]
                    C[i] %= MOD
            B = C[:]
        n >>= 1
        C = [[0] * 4 for _ in range(4)]
        for i in range(4):
            for j in range(4):
                for k in range(4):
                    C[i][j] += A[i][k] * A[k][j]
                    C[i][j] %= MOD
        A = deepcopy(C)
    
    ans = B[0] * 2 + B[1] + B[2] + B[3]
    print(ans % MOD)