import numpy as np A,B=map(int,input().split()) N=int(input()) a=np.array([[1,0,0],[0,1,0],[A,B,1]]) b=np.array([[0,0,1],[1,0,0],[0,0,0]]) mod=10**9+7 for k in range(N): t=int(input()) ans=a if t%2 else np.array([[1,0,0],[0,1,0],[0,0,1]]) temp=b@a rem=t//2 while rem: if rem%2: ans=ans@temp temp=temp@temp for i in range(3): for j in range(3): ans[i][j]%=mod temp[i][j]%=mod rem//=2 print((np.array([[1,1,1]])@ans@np.array([[1],[1],[0]]))[0][0]%mod)