Buggy python submission (verdict: Runtime Error):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = []
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
val1 = 1
if 1 in lis:
    val2 = 0
else:
    val2 = 1

if lis[0] == 1:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
val1 = 1
if 1 in lis:
    val2 = 0
else:
    val2 = 1

if lis[0] == 1:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
val1 = 1
if 1 in lis:
    val2 = 0
else:
    val2 = 1
nex = 0
flg = lis[0]
f = 0
for x in range(2,n):
    if x == flg:
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
val1 = 1
if 1 in lis:
    val2 = 0
else:
    val2 = 1
nex = 0
flg = lis[0]
f = 0
for x in range(2,n):
    if x == flg:
        nex += 1
        flg = lis[nex]
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
val1 = 1
if 1 in lis:
    val2 = 0
else:
    val2 = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
#print(stairs)
print((val1 + val2) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)

Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if not m == 0:
    lis = [int(input()) for x in range(m)]
else:
    lis = []
stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if not m == 0:
    lis = [int(input()) for x in range(m)]
stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
mod = 10 ** 9 + 7

n,m = map(int,input().split())
lis = [int(input()) for x in range(m)]
if n == 1:
    print(1)
elif n == 2:
    print(2)
stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
mod = 10 ** 9 + 7

n,m = map(int,input().split())
lis = [int(input()) for x in range(m)]

stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)
    


Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)

Buggy python submission (verdict: Runtime Error):
mod = 10 ** 9 + 7

n,m = map(int,input().split())
lis = [int(input()) for x in range(m)]

stairs = [0 for x in range(n)]
stairs[0] = 1
if 1 in lis:
    stairs[1] = 0
else:
    stairs[1] = 1
#print(stairs)
f = 0
for x in range(2,n):
    if x in lis:
        stairs[x] = 0
    else:
        stairs[x] = (stairs[x-1] + stairs[x-2]) % mod
    
#print(stairs)
print((stairs[n-1] + stairs[n-2]) % mod)

Fixed submission:
import sys
mod = 10 ** 9 + 7

n,m = map(int,input().split())
if n in [0,1]:
    print(1)
    sys.exit()
    
if not m == 0: lis = [int(input()) for x in range(m)]
else: lis = [-1]
val1 = 1
if 1 in lis: val2 = 0
else: val2 = 1

if lis[0] == 1 and len(lis) >= 2:
    flg = lis[1]
    nex = 1
else:
    flg = lis[0]
    nex = 0
#print(lis)
for x in range(2,n):
    if x == flg: #x in lis
        #print(flg)
        nex += 1
        try: flg = lis[nex]
        except:flg = 0
        now = 0
    else:
        now = (val1 + val2) % mod
    val1,val2 = val2,now
    
print((val1 + val2) % mod)