# A*B def mat_mul(A, B, mod): C = [[0]*len(B[0]) for i 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 #A**n def mat_pow(A, n, mod): B = [[0]*len(A) for i in range(len(A))] for i in range(len(A)): B[i][i] = 1 while n > 0: if n & 1 == 1: B = mat_mul(A, B, mod) A = mat_mul(A, A, mod) n = n>>1 return B import sys import io, os input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline mod = 10**9+7 def main(): a, b = map(int, input().split()) n = int(input()) X0 = [1, 1, 0] X1 = [1, 1, a+b] for i in range(n): t = int(input()) if t%2 == 0: t //= 2 A = [[a, b, 0], [1, 0, 0], [0, 0, 0]] A = mat_pow(A, t, mod) ans = 0 for i in range(3): for j in range(3): ans += A[i][j]*X0[j] ans %= mod print(ans) else: t //= 2 A = [[0, 0, 1], [1, 0, 0], [b, 0, a]] A = mat_pow(A, t, mod) ans = 0 for i in range(3): for j in range(3): ans += A[i][j]*X1[j] ans %= mod print(ans) if __name__ == '__main__': main()