Buggy python submission (verdict: Runtime Error):
n,m = map(int, input().split())
bl = set([int(input())-1 for _ in range(m)])
l = [i for i in range(n)]

mod = 1000000007
al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()

    
li = [i for i in l if i>=2]

for i in li:
    if i not in bl
        al[i] = (al[i-1] + al[i-2])%mod
        if al[i] == 0:
            print(0)
            exit()

print(al[-1])


Fixed submission:
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
cnt = 0
for num in bl:
    del l[num-cnt]
    cnt +=1
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n) if i not in set(bl)]
mod = 1000000007
al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()

    
li = [i for i in l if i>=2]

for i in li:
    al[i] = (al[i-1] + al[i-2])%mod
    if al[i] == 0:
        print(0)
        exit()

print(al[-1])


Fixed submission:
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
cnt = 0
for num in bl:
    del l[num-cnt]
    cnt +=1
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
n,m = map(int, input().split())
if m >(n//2+1):
    print(0)
    exit()
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
for num in bl:
    l.remove(num)
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Fixed submission:
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
cnt = 0
for num in bl:
    del l[num-cnt]
    cnt +=1
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
for num in bl:
    l.remove(num)
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Fixed submission:
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
cnt = 0
for num in bl:
    del l[num-cnt]
    cnt +=1
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n) if i not in bl]
mod = 1000000007
al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()

    
li = [i for i in l if i>=2]

for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)

Fixed submission:
n,m = map(int, input().split())
bl = [int(input())-1 for _ in range(m)]
l = [i for i in range(n)]
cnt = 0
for num in bl:
    del l[num-cnt]
    cnt +=1
    
mod = 1000000007

al = [0]*n
if 0 in l and 1 in l:
    al[0] = 1
    al[1] = 2
elif 0 in l:
    al[0] =1
elif 1 in l:
    al[1] = 1
else:
    print(0)
    exit()
    
li = [i for i in l if i>=2]
for i in li:
    al[i] = al[i-1] + al[i-2]
    if al[i] == 0:
        print(0)
        exit()

print(al[-1]%mod)