def Matprod(A, B, mod): N = len(A) temp = [[0] * N for i in range(N)] for i in range(N): for j in range(N): for k in range(N): temp[i][j] += A[i][k] * B[k][j] temp[i][j] %= mod return temp def Matpow(A, M, mod): N = len(A) Mat = [[0] * N for i in range(N)] for i in range(N): Mat[i][i] = 1 for i in range(65): if (M >> i) & 1: Mat = Matprod(Mat, A, mod) A = Matprod(A, A, mod) return Mat A, B = map(int, input().split()) mod = 10 ** 9 + 7 N = int(input()) X = [[1, 0, 0], [0, 1, 0], [A, B, 1]] Y = [[0, 0, 1], [1, 0, 0], [0, 0, 0]] Z = Matprod(Y, X, mod) for _ in range(N): T = int(input()) W = Matpow(Z, T//2, mod) if T % 2: W = Matprod(X, W, mod) ans = 0 for i in range(3): for j in range(2): ans += W[i][j] ans %= mod print(ans)