Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
l=[a[0]]
for i in range(len(a)-1):
    l.append(a[i+1]-a[i]-1)
l.append(n-a[-1])
k=1
for i in l:
    k=fib[i]*k%mod
print(k%mod)

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib=[0,1,1]
for i in range(3,100003):
    fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
k=1
y=1
for i in range(n):
    if i in a:
        k*=fib[y-1]
        y=0
    y+=1
k*=fib[y]
print(k%mod)

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(100001)

def intinput(): return map(int,sys.stdin.readline().split())

fibmemo={1:1,2:1}
for i in range(3,100000):
    fibmemo[i]=fibmemo[i-1]+fibmemo[i-2]
def fib(n):
    return fibmemo[n]

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
m=fib(a[0])
tmp=a[0]
for i in a:
    if i+1 in a:
        print(0)
        sys.exit()
    if a[0]==i:
        continue
    m=fib(i-tmp-1)*m%mod
    tmp=i
m=fib(n-tmp)*m%mod
print(m)

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fibmemo={1:1,2:1}
for i in range(3,100000):
    fibmemo[i]=fibmemo[i-1]+fibmemo[i-2]
def fib(n):
    return fibmemo[n]

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
m=fib(a[0])
tmp=a[0]
for i in a:
    if i+1 in a:
        print(0)
        sys.exit()
    if a[0]==i:
        continue
    m=fib(i-tmp-1)*m%mod
    tmp=i
m=fib(n-tmp)*m%mod
print(m)

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fibmemo={1:1,2:1}
def fib(n):
    if n in fibmemo:
        return fibmemo[n]
    k=fib(n-2)+fib(n-1)
    fibmemo[n]=k
    return k

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
m=fib(a[0])
tmp=a[0]
for i in a:
    if i+1 in a:
        print(0)
        sys.exit()
    if a[0]==i:
        continue
    m=fib(i-tmp-1)*m%mod
    tmp=i
m=fib(n-tmp)*m%mod
print(m)

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

n,m=intinput()
a=[int(sys.stdin.readline()) for _ in range(m)]
memo=[0 for x in range(n+4)]
memo[0]=1
mod = 10**9+7
for i in range(n):
    if i+1 not in a:
        memo[i+1]=(memo[i+1]+memo[i])%mod
    if i+2 not in a:
        memo[i+2]=(memo[i+2]+memo[i])%mod
print(memo[n])

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

n,m=intinput()
a=[]
memo={x:0 for x in range(n+4)}
memo[0]=1
mod = 10**9+7
for i in range(m):
    a.append(int(input()))
for i in range(n):
    if i+1 not in a:
        memo[i+1]=(memo[i+1]+memo[i])%mod
    if i+2 not in a:
        memo[i+2]=(memo[i+2]+memo[i])%mod
print(memo[n])

Fixed submission:
import sys
sys.setrecursionlimit(100000)

def intinput(): return map(int,sys.stdin.readline().split())

fib={0:0,1:1,2:1}
for i in range(3,100003):
    fib[i]=fib[i-1]+fib[i-2]
  #  fib.append(fib[i-1]+fib[i-2])

n,m=intinput()
mod=10**9+7
a=[int(sys.stdin.readline()) for _ in range(m)]
if m!=0:
    l=[a[0]]
    for i in range(len(a)-1):
        l.append(a[i+1]-a[i]-1)
    l.append(n-a[-1])
    k=1
    for i in l:
        k=fib[i]*k%mod
    print(k%mod)
else:
    print(fib[n+1]%mod)