mod = 1000000007


def main():
    import sys
    input = sys.stdin.readline

    def matmul(A, B):
        C = [[0] * len(B[0]) for _ in range(len(A))]
        for i in range(len(A)):
            for k in range(len(B)):
                for j in range(len(B[0])):
                    C[i][j] = (C[i][j] + A[i][k] * B[k][j]) % mod
        return C

    def matpow(A, p):
        n = len(A)
        B = [[0] * n for _ in range(n)]
        for i in range(n):
            B[i][i] = 1
        while p > 0:
            if p & 1:
                B = matmul(B, A)
            A = matmul(A, A)
            p >>= 1
        return B

    N = int(input())
    vec = [[1], [0], [0], [0]]
    mat = [[1, 0, 1, 0], [1, 1, 1, 1], [1, 0, 0, 0], [0, 1, 0, 0]]
    NN = (N + 1) // 2
    ans = matmul(matpow(mat, NN), vec)
    if N & 1:
        print(ans[1][0])
    else:
        print(ans[0][0])


if __name__ == '__main__':
    main()