n,m = map(int,input().split())
a = set([int(input()) for _ in range(m)])

dp = [0] * (n+1)
dp[0] = 1

if 1 not in a:
    dp[1] = 1
    
for i in range(2,n+1):
    if i not in a:
        dp[i] = dp[i-1] + dp[i-2]
        dp[i] %= 1000000007
        
print(dp[n]) n,m = map(int,input().split()) n map(int,input().split()) map int input().split() ().split () input split m int(input()) for _ in range(m) for _ in range(m) _ range(m) range m for _ in range(m) int(input()) int input() input a = set([int(input()) for _ in range(m)]) a set([int(input()) for _ in range(m)]) set [int(input()) for _ in range(m)] dp = [0] * (n+1) dp [0] * (n+1) [0] 0 n+1 n 1 dp[0] = 1 dp[0] dp 0 1 if 1 not in a:
    dp[1] = 1
     1 not in a 1 a dp[1] = 1 dp[1] dp 1 1 for i in range(2,n+1):
    if i not in a:
        dp[i] = dp[i-1] + dp[i-2]
        dp[i] %= 1000000007
         i range(2,n+1) range 2 n+1 n 1 if i not in a:
        dp[i] = dp[i-1] + dp[i-2]
        dp[i] %= 1000000007
         i not in a i a dp[i] = dp[i-1] + dp[i-2] dp[i] dp i dp[i-1] + dp[i-2] dp[i-1] dp i-1 i 1 dp[i-2] dp i-2 i 2 dp[i] %= 1000000007 dp[i] dp i 1000000007 print(dp[n]) print dp[n] dp n m = map(int,input().split()) map(int,input().split()) m n,m = map(int,input().split()) map(int,input().split()) n a = set([int(input()) for _ in range(m)]) set([int(input()) for _ in range(m)]) a dp = [0] * (n+1) [0] * (n+1) dp
n,m = map(int,input().split())
a = set([int(input()) for _ in range(m)])

dp = [0] * (n+1)
dp[0] = 1

if 1 not in a:
    dp[1] = 1
    
for i in range(2,n+1):
    if i not in a:
        dp[i] = dp[i-1] + dp[i-2]
        dp[i] %= 1000000007
        
print(dp[n])