Buggy python submission (verdict: Runtime Error):
n,m = map(int,input().split())

a = []
for i in range(m):
    a.append(int(input()))

d = [a[0]-1]
for j in range(1,m):
    d.append(a[j]-a[j-1]-2)

d.append(n-a[m-1]-1)


fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1

for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

#print(d)

if (-1 in d) or (-2 in d):
    print(0)
else:
    ans = 1
    for k in range(m+1):
        ans = (ans * fiblist[d[k]]) % 1000000007

    print(ans)


Fixed submission:
fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1
for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

n,m = map(int,input().split())

if m == 0:
    print(fiblist[n])
else:
    a = []
    for i in range(m):
        a.append(int(input()))

    d = [a[0]-1]
    for j in range(1,m):
        d.append(a[j]-a[j-1]-2)

    d.append(n-a[m-1]-1)




#print(d)

    if (-1 in d) or (-2 in d):
        print(0)
    else:
        ans = 1
        for k in range(m+1):
            ans = (ans * fiblist[d[k]]) % 1000000007

        print(ans)

Buggy python submission (verdict: Runtime Error):
n,m = map(int,input().split())

a = []
for i in range(m):
    a.append(int(input()))

d = [a[0]-1]
for j in range(1,m):
    d.append(a[j]-a[j-1]-2)

d.append(n-a[m-1]-1)


fiblist = [0] * 100000
fiblist[0] = 1
fiblist[1] = 1

for p in range(2,100000):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

#print(d)

if (-1 in d) or (-2 in d):
    print(0)
else:
    ans = 1
    for k in range(m+1):
        ans = (ans * fiblist[d[k]]) % 1000000007

    print(ans)

   

Fixed submission:
fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1
for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

n,m = map(int,input().split())

if m == 0:
    print(fiblist[n])
else:
    a = []
    for i in range(m):
        a.append(int(input()))

    d = [a[0]-1]
    for j in range(1,m):
        d.append(a[j]-a[j-1]-2)

    d.append(n-a[m-1]-1)




#print(d)

    if (-1 in d) or (-2 in d):
        print(0)
    else:
        ans = 1
        for k in range(m+1):
            ans = (ans * fiblist[d[k]]) % 1000000007

        print(ans)

Buggy python submission (verdict: Runtime Error):
n,m = map(int,input().split())

a = []
for i in range(m):
    a.append(int(input()))

d = [a[0]-1]
for j in range(1,m):
    d.append(a[j]-a[j-1]-2)

d.append(n-a[m-1]-1)

mm = max(d)

fiblist = [0] * (mm+100)
fiblist[0] = 1
fiblist[1] = 1

for p in range(2,mm+100):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

#print(d)

if (-1 in d) or (-2 in d):
    print(0)
else:
    ans = 1
    for k in range(m+1):
        ans = (ans * fiblist[d[k]]) % 1000000007

    print(ans)


Fixed submission:
fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1
for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

n,m = map(int,input().split())

if m == 0:
    print(fiblist[n])
else:
    a = []
    for i in range(m):
        a.append(int(input()))

    d = [a[0]-1]
    for j in range(1,m):
        d.append(a[j]-a[j-1]-2)

    d.append(n-a[m-1]-1)




#print(d)

    if (-1 in d) or (-2 in d):
        print(0)
    else:
        ans = 1
        for k in range(m+1):
            ans = (ans * fiblist[d[k]]) % 1000000007

        print(ans)

Buggy python submission (verdict: Runtime Error):
n,m = map(int,input().split())

a = []
for i in range(m):
    a.append(int(input()))

d = [a[0]-1]
for j in range(1,m):
    d.append(a[j]-a[j-1]-2)

d.append(n-a[m-1]-1)

mm = max(d)

fiblist = [0] * (mm+5)
fiblist[0] = 1
fiblist[1] = 1

for p in range(2,mm+5):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

#print(d)

if -1 in d:
    print(0)
else:
    ans = 1
    for k in range(m+1):
        ans = (ans * fiblist[d[k]]) % 1000000007

    print(ans)


Fixed submission:
fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1
for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

n,m = map(int,input().split())

if m == 0:
    print(fiblist[n])
else:
    a = []
    for i in range(m):
        a.append(int(input()))

    d = [a[0]-1]
    for j in range(1,m):
        d.append(a[j]-a[j-1]-2)

    d.append(n-a[m-1]-1)




#print(d)

    if (-1 in d) or (-2 in d):
        print(0)
    else:
        ans = 1
        for k in range(m+1):
            ans = (ans * fiblist[d[k]]) % 1000000007

        print(ans)

Buggy python submission (verdict: Runtime Error):
n,m = map(int,input().split())

a = []
for i in range(m):
    a.append(int(input()))

d = [a[0]-1]
for j in range(1,m):
    d.append(a[j]-a[j-1]-2)

d.append(n-a[m-1]-1)

mm = max(d)

fiblist = [0] * (mm+1)
fiblist[0] = 1
fiblist[1] = 1

for p in range(2,mm+1):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

#print(d)

if -1 in d:
    print(0)
else:
    ans = 1
    for k in range(m+1):
        ans = (ans * fiblist[d[k]]) % 1000000007

    print(ans)


Fixed submission:
fiblist = [0] * 100001
fiblist[0] = 1
fiblist[1] = 1
for p in range(2,100001):
    fiblist[p] = (fiblist[p-1]+fiblist[p-2]) % 1000000007

n,m = map(int,input().split())

if m == 0:
    print(fiblist[n])
else:
    a = []
    for i in range(m):
        a.append(int(input()))

    d = [a[0]-1]
    for j in range(1,m):
        d.append(a[j]-a[j-1]-2)

    d.append(n-a[m-1]-1)




#print(d)

    if (-1 in d) or (-2 in d):
        print(0)
    else:
        ans = 1
        for k in range(m+1):
            ans = (ans * fiblist[d[k]]) % 1000000007

        print(ans)