Harryxun/stf_run huggingface dataset:
n = int(raw_input())
s = ["" for i in range(n)]
while True:
    a = raw_input().split()
    if a[0] == "quit":
        break
    if a[0] == "push":
        s[int(a[1])] += a[2]
    elif a[0] == "pop":
        l = len(s[int(a[1])]) - 1
        print s[int(a[1])][l]
        s[int(a[1)]] = s[int(a[1])][:l]
    elif a[0] == "move":
        l = len(s[int(a[1])]) - 1
        stuck[int(a[2])] += stuck[int(a[1])][l]
        stuck[int(a[1])] = stuck[int(a[1])][:l]

### FIXED CODE ###

n = int(raw_input())
s = ["" for i in range(n)]

while True:
    a = raw_input().split()
    if a[0] == "quit":
        break

    i = int(a[1]) - 1
    if a[0] == "push":
        s[i] += a[2]

    elif a[0] == "pop":
        l = len(s[i]) - 1
        print s[i][l]
        s[i] = s[i][:l]

    elif a[0] == "move":
        j = int(a[2]) - 1 
        l = len(s[i]) - 1
        s[j] += s[i][l]
        s[i] = s[i][:l]
3
6 6 6

### FIXED CODE ###

import sys
input = sys.stdin.readline
n = int(input())
A = list(map(int,input().split()))
B = []
for i in range(n):
    B.append(A[i] - A[i-1])

m = max(B)
no = 0

if m < 0:
    no = 1
elif m == 0:
    if A[0] % (n*(n+1)//2) > 0:
        no = 1
else:
    c = 0
    for i in range(n):
        if (m - B[i]) % n > 0:
            no = 1
        else:
            c += (m - B[i]) // n

    if c != m:
        no = 1
    if sum(A) != m * n*(n+1)//2:
        no = 1

if no==1:
    print("NO")
else:
    print("YES")
while True:
    try:
        a = int(input())
        b = int(input())
    except EOFError:
        break
    if a <= 9 and b <= 9:
        print(a * b)
    else:
        print(-1)

### FIXED CODE ###

inp = input().split()

A = int(inp[0])
B = int(inp[1])

C=A*B
if A <= 9 and B <= 9:
	print(C)
else:
	print(-1)
n = int(input())
high = list(map(int,input().split()))
lists = []

def func(i,t):
    if i == n - 1:
        lists.append(t)
        return
    if high[i] < high[i+1]:
        lists.append(t)
        t = 0
        func(i+1,0)
    else:
        t += 1
        func(i+1,t)

func(0,0)
print(max(lists))


### FIXED CODE ###

import sys
sys.setrecursionlimit(100000) 

n = int(input())
high = list(map(int,input().split()))
lists = []

def func(i,t):
    if i == n - 1:
        lists.append(t)
        return
    if high[i] < high[i+1]:
        lists.append(t)
        func(i+1,0)
    else:
        t += 1
        func(i+1,t)

func(0,0)
print(max(lists))
import copy
input()
a=[int(i) for i in input().split()]
sa=copy.copy(a)
for i in range(len(a)):
    sa[i]=sa[i]-(i+1)
sa.sort()
b=sa[int(len(sa)/2)]
c=sa[int(len(sa)/2)+1]
sb=0
sc=0
for i in range(len(a)):
    sb=sb+abs(a[i]-(b+i+1))
    sc=sc+abs(a[i]-(c+i+1))
print(min(sb,sc))

### FIXED CODE ###

N=int(input())
if N/2==N//2:
    print(N)
else:
    print(N*2)
n = input()
intn = int(n)
s = int("1"*len(n))*9
if s==intn:
  print(len(n)*9)
  quit()
ans=int("1"*(len(n)-1))*9
xx = int(n[0])-1
def split(aa):
  return [c for c in aa]
ans=split(str(ans))
c = 0
for i in range(len(ans)):
    ans[c] = int(ans[c])
    c+=1
print(sum(ans)+xx)

### FIXED CODE ###

n = list(map(int, input()))
l = [sum(n)]
for i in range(1, len(n)):
    n[-i] = 9
    n[-i-1] -= 1
    l.append(sum(n)) 
print(max(l))
from collections import deque

S = input()
Q = int(input())
head = 1
d = deque([S])

for _ in range(Q):
    q = input().split()
    if q[0]=='1':
        head = head*-1
    else:
        if q[1]=='1':
            h = head*1
        else:
            h = head*-1
        
        if h==1:
            d.appendleft(q[2])
        else:
            d.append(q[2])
if head == -1:
    d.reverse()

print("".join(list(d)))

### FIXED CODE ###

A, B = map(int, input().split())

flg = False
for price in range(1,1010):
    if int(price*0.08)==A and int(price*0.1)==B:
        flg = True
        break

if flg:
    print(price)
else:
    print(-1)
N = input()
M = int(N)

def cal(a):
	return a%1000

 
if M=1000
  print(0)


else:
	print(1000-cal(M))




### FIXED CODE ###

N = input()
M = int(N)
 
def cal(a):
	return a%1000
 
 
if M % 1000==0:
  print(0)
 
 
else:
	print(1000-cal(M))
S = input()
m = 0
n = 0
lst = []
for i in range(len(S)):
  n += 1
  if i not in "ACGT":
    lst.append(n)
for y in range(len(lst)-1):
  if (lst[y+1] - lst[y]) > m:
    m = (lst[y+1] - lst[y])
print (m-1)
  

### FIXED CODE ###

S = input()
S ="w"+ S + "w"
m = 0
n = 0
lst = []
for i in S:
  n += 1
  if i not in "ACGT":
    lst.append(n)
for y in range(len(lst)-1):
  if (lst[y+1] - lst[y]) > m:
    m = (lst[y+1] - lst[y])
print (m-1)
N,K=map(int,input().split())
A=list(map(int,input().split()))
m,p,z=[],[],0
for a in A:
    if a<0:
        m.append(a)
    elif a>0:
        p.append(a)
    else:
        z+=1
m.sort()
p.sort()
mod=10**9+7
from functools import reduce
if len(p) and (K<len(m)+len(p) or K==len(m)+len(p) and len(m)%2==0):
    r=1
    i,j=0,0
    while i+j<K:
        if i<len(m)-1 and m[i]*m[i+1]>p[-j-1]*p[-j-2]:
            r=r*m[i]*m[i+1]%mod
            i+=2
        else:
            r=r*p[-j-1]%mod
            j+=1
    print(r)
elif z:
    print(0)
else:
    print(reduce(lambda x,y:x*y%mod,(m+p)[-K:]))

### FIXED CODE ###

N,K=map(int,input().split())
A=list(map(int,input().split()))
m,p,z=[],[],0
for a in A:
    if a<0:
        m.append(a)
    elif a>0:
        p.append(a)
    else:
        z+=1
m.sort()
p.sort()
mod=10**9+7
from functools import reduce
if (len(p) or K%2==0) and K<len(m)+len(p) or K==len(m)+len(p) and len(m)%2==0:
    r=1
    i,j=0,0
    while i+j<K:
        if i<len(m)-1 and i+j<K-1 and (j>=len(p)-1 or m[i]*m[i+1]>p[-j-1]*p[-j-2]):
            r=r*m[i]*m[i+1]%mod
            i+=2
        else:
            r=r*p[-j-1]%mod
            j+=1
    print(r)
elif z:
    print(0)
else:
    print(reduce(lambda x,y:x*y%mod,(m+p)[-K:]))
H, W = map(int, input().split())
a = H*W
if a%2 == 1:
    print((a+1)//2)
else:
    print(a//2)
return

### FIXED CODE ###

import sys
sr = lambda: sys.stdin.readline().rstrip()
ir = lambda: int(sr())
lr = lambda: list(map(int, sr().split()))
def resolve():
    H, W = lr()
    a = H*W
    if H == 1 or W == 1:
        print(1)
    elif a%2 == 1:
        print((a+1)//2)
    else:
        print(a//2)
    return
resolve()
import sys
import time
import math
import itertools as it
def inpl():
    return list(map(int, input().split()))
st = time.perf_counter()
# ------------------------------

N, M = map(int, input().split())
s = [0] * M
c = [0] * M
for i in range(M):
	s[i], c[i] = map(int, input().split())
ls = [-1] * N
for i in range(M):
	if ls[s[i]-1] == -1 or ls[s[i]-1] == c[i]:
		ls[s[i]-1] = c[i]
	else:
		print(-1)
		sys.exit()

if ls[0] == 0:
	print(-1)
	sys.exit()
for i in range(M):
	if i == 0 and ls[i] == -1:
		print(1, end='')
	elif ls[i] == -1:
		print(0, end='')
	else:
		print(ls[i], end ='')
print()



# ------------------------------
ed = time.perf_counter()
print('time:', ed-st, file=sys.stderr)


### FIXED CODE ###

import sys
import time
import math
import itertools as it
def inpl():
    return list(map(int, input().split()))
st = time.perf_counter()
# ------------------------------

N, M = inpl()
dp = [-1] * N
for _ in range(M):
    s, c = inpl()
    s -= 1
    if dp[s] not in [-1, c]:
        print(-1)
        sys.exit()
    dp[s] = c
for i in range(N):
    if N == 1:
        if dp[i] == -1:
            print(0, end='')
        else:
            print(dp[i], end='')
    else:
        if i == 0:
            if dp[i] == -1:
                print(1, end='')
            elif dp[i] == 0:
                print(-1)
                sys.exit()
            else:
                print(dp[i], end='')
        else:
            if dp[i] == -1:
                print(0, end='')
            else:
                print(dp[i], end='')
                
print()
# ------------------------------
ed = time.perf_counter()
print('time:', ed-st, file=sys.stderr)
N = int(input())
A_list = list(map(int, input().split()))
B_list = [0]* n
for i in range(1, N):
    print(A_list.count(i))
print(0)


### FIXED CODE ###

N = int(input())
A_list = list(map(int, input().split()))
ans_list = [0] * (N + 1)
for i in range(N-1):
    ans_list[A_list[i]] += 1
for j in range(N):
    print(ans_list[j + 1])
def is_prime(n):
    for p in range(2,n):
        if n % p ==0:
            return True

N =int(input())
p=N
while cnt <10**7:
    if is_prime(p):
        p +=1
    else:
        print(p)
        break

### FIXED CODE ###

def is_prime(n):
    for p in range(2,n):
        if n % p ==0:
            return True

N =int(input())
p=N
while p <10**7:
    if is_prime(p):
        p +=1
    else:
        print(p)
        break
#!/usr/bin/env python3

a = int(input())
a, b = map(int, input().split())
a = list(str(input()))


### FIXED CODE ###

#!/usr/bin/env python3

import numpy as np
N, M = map(int, input().split())
A = list(map(int, input().split()))

A = np.array(A)

num = np.sum(A >= np.sum(A)/(4*M))

if num >= M:
    print("Yes")
else:
    print("No")
import math
def I(): return(list(map(int,input().split())))
n,m=I()
a=I()
t=math.ceil((1/4m*sum(a)))
c=0
for i in a:
	if i>=t:c+=1
print(["NO"]["YES"][c==m])


### FIXED CODE ###

import math
def I(): return(list(map(int,input().split())))
n,m=I()
a=I()
t=math.ceil((1/(4*m))*sum(a))
c=0
for i in a:
	if i>=t:c+=1
print(["No","Yes"][c>=m])
a=[]
while True:
 n=input()
 if int(n)==0:break
 a.append(n)
for s in a:
 x,y=map(int,s.split())
 if x>y:print(f'{y} {x}')
 else:print(s)

### FIXED CODE ###

import sys
for s in sys.stdin:
 if'0 0\n'==s:break
 print(*sorted(map(int,s.split())))
N, W = list(map(int, input().split(" ")))
 
for i in range(0, N):
	for w in range(1, W+1):
		weight, vvalue = list(map(int, input().split(" ")))
		if w >= weight:
			dp[i + 1][w] = max([dp[i][w - weight] + value, dp[i][w]])
		else:
			dp[i + 1][w] = dp[i][w]
print(dp[N][W])

### FIXED CODE ###

N, W = list(map(int, input().split(" ")))
dp =  [[0] * (W+1) for _ in range(N+1)]
 
for i in range(0, N):
	weight, value = map(int, input().split(" "))
	for w in range(1, W+1):
		if w >= weight:
			dp[i + 1][w] = max([dp[i][w - weight] + value, dp[i][w]])
		else:
			dp[i + 1][w] = dp[i][w]
print(dp[N][W])
a,b,c,d,e,k=[int(input()) for i in range(5)]
print("Yay!" if e-a<=k else ":(")

### FIXED CODE ###

a,b,c,d,e,k=[int(input()) for i in range(6)]
print("Yay!" if e-a<=k else ":(")
n = int(input())
a = list(map(int, input().split()))
c = [] * n
for x in a:
  c[x-1] += 1
for x in c:
  print(x)

### FIXED CODE ###

n = int(input())
a = list(map(int, input().split()))
c = [0] * n

for x in a:
  c[x-1] += 1
for x in c:
  print(x)
x = int(input())

while True:
    for i in range(2,int(x**0.5)+1):
        if x%i==0:
            x = x + 1
            break()
        else:
            if i == x-1:
                print(x)
                exit()
            

### FIXED CODE ###

x = int(input())

while True:
    for i in range(2,int(x**0.5)+1):
        if x%i==0:
            x = x + 1
            break
    else:
        print(x)
        exit()
x=int(input())
p=[100+i for i in range(6)]
def dp(x):
    if x<99:
        return False
    if x in p:
        return True
    else:
        if any(dp(x-i) for i in range(100,106)):
            return True
        else:
            False
print(1 if dp(x) else 0)

### FIXED CODE ###

X = int(input())
dp = [0 for _ in range(X + 110)]
dp[0] = 1
for i in range(X + 1):
    if dp[i] == 0:
        continue
    dp[i + 100] = 1
    dp[i + 101] = 1
    dp[i + 102] = 1
    dp[i + 103] = 1
    dp[i + 104] = 1
    dp[i + 105] = 1
print(dp[X])
a = input().rstrip().split()
if a[0] = a[1]:
  print('Yes')
else:
  print('No')

### FIXED CODE ###

a = input().rstrip().split()
if a[0] == a[1]:
  print('Yes')
else:
  print('No')
a = [int(input()) for i in range(5)]
k = int(input())
print("Yey!" if e-a<= k else ":(")

### FIXED CODE ###

a,b,c,d,e,k= int(input()),int(input()),int(input()),int(input()),int(input()),int(input())
print("Yay!" if e-a<= k else ":(")
n=int(input())
s=list(input())
ans=0
for i in range(n):
  if s[i]=="A":
    if s[i+1]=="B":
      if s[i+2]=="C":
        ans+=1
print(ans)

### FIXED CODE ###

n=int(input())
s=list(input())
ans=0
for i in range(n-2):
  if s[i]=="A":
    if s[i+1]=="B":
      if s[i+2]=="C":
        ans+=1
print(ans)
N=int(input())
an=list(map(int,input().split()))
s = sum(an)
h = s/2
f=int(N/2)
x = sum(an[:f])
y = s - x
z=abs(x-y)
for i in range(f):
    if f+1 >= N:
        break
    t1=x + an[f+1]
    t2=y - an[f+1]
    t3=x - an[f-1]
    t4=y + an[f-1]
    print(t1,t2)
    k1=abs(t1-t2)
    k2=abs(t3-t4)
    p=0
    k = min(k1,k2)
    if k1 > k2:
        p = -1
    else:
        p = 1
    if z > k:
        f = f + p
        z = k
    else:
        break
print(z)

### FIXED CODE ###

A,B=map(int,input().split())
if A % 3 == 0 or B % 3 == 0 or (A+B) % 3 == 0:
    print('Possible')
else:
    print('Impossible')
# それぞれソート済みとして, 整数でAi<BjかつBj<Ckとなるjを求める(にぶたん)

N = int(input())
A = list(sorted(list(map(int, input().split()))))
B = list(sorted(list(map(int, input().split()))))
C = list(sorted(list(map(int, input().split()))))


def lower_bound(arr, target):
    # targetを超える最小の値のインデックス
    if target > arr[-1]:
        return None
    left, right = 0, len(arr)
    while left < right:
        mid = (left + right) // 2
        if arr[mid] > target:
            right = mid
        else:
            left = mid + 1
    return right


def upper_bound(arr, target):
    # target以上の最小の値のインデックス
    if target < arr[0]:
        return None
    left, right = 0, len(arr)
    while left < right:
        mid = (left + right) // 2
        if arr[mid] >= target:
            right = mid
        else:
            left = mid + 1
    return right


count = 0

for b in B:
    ai = upper_bound(A, b)
    ci = N - lower_bound(C, b)
    if ai is not None and ci is not None:
        count += ai * ci

print(count)


### FIXED CODE ###

# それぞれソート済みとして, 整数でAi<BjかつBj<Ckとなるjを求める(にぶたん)

N = int(input())
A = list(sorted(list(map(int, input().split()))))
B = list(sorted(list(map(int, input().split()))))
C = list(sorted(list(map(int, input().split()))))


def lower_bound(arr, target):
    # targetを超える最小の値のインデックス
    if target > arr[-1]:
        return None
    left, right = 0, len(arr)
    while left < right:
        mid = (left + right) // 2
        if arr[mid] > target:
            right = mid
        else:
            left = mid + 1
    return right


def upper_bound(arr, target):
    # target以上の最小の値のインデックス
    if target < arr[0]:
        return None
    left, right = 0, len(arr)
    while left < right:
        mid = (left + right) // 2
        if arr[mid] >= target:
            right = mid
        else:
            left = mid + 1
    return right


count = 0

for b in B:
    ai = upper_bound(A, b)
    ci = lower_bound(C, b)
    if ai is not None and ci is not None:
        count += ai * (N - ci)

print(count)
S = input()
K = int(input())
counter = 0
num = 0
log = 0
for i in range(101):
    if int(S[i]) != 1:
        log = counter
        num = int(S[i])
        break
    counter += 1

if K <= log:
    print(1)
else:
    print(num)


### FIXED CODE ###

S = input()
K = int(input())
counter = 0
num = 1
log = 0
for i in S:
    if int(i) != 1:
        log = counter
        num = int(i)
        break
    counter += 1

if K <= log:
    print(1)
else:
    print(num)
N=int(input())
root=[-1]*N
color=[-1]*N
from collections import defaultdict
tree=dict()
branch=defaultdict(set)
for i in range(N):
    tree[i]={i}
def search(i):
    if root[i]>=0:
        root[i]=search(root[i])
        return root[i],cnt
    return i
def makecolor(u,v):
    if color[u]==color[v]==-1:
        color[u]=0
        color[v]=1
    elif color[u]==-1:
        color[v]=(color[u]+1)%2
    elif color[v]==-1:
        color[u]=(color[v]+1)%2
    else:
        if color[u]==color[v]:
            if len(tree[u])<=len(tree[v]):
                u,v=v,u
            for x in tree[v]:
                color[x]=(color[x]+1)%2
for i in range(N-1):
    u,v,w=map(int,input().split())
    if w%2==0:
        continue
    u-=1
    v-=1
    branch[u]|={v}
    branch[v]|={u}
    ru=search(u)
    rv=search(v)
    if ru==rv:
        continue
    
    if root[ru]<=root[rv]:
        root[rv]+=root[ru]
        root[ru]=rv
        makecolor(rv,ru)
        tree[rv]|=tree[ru]
    else:
        root[ru]+=root[rv]
        root[rv]=ru
        makecolor(ru,rv)
        tree[ru]|=tree[rv]
color=[i if i!=-1 else 1 for i in color]
for i in range(N):
    print(color[i])

### FIXED CODE ###

N=int(input())
from collections import defaultdict
branch=defaultdict(dict)
for i in range(N-1):
    u,v,w=map(int,input().split())
    branch[u-1][v-1]=w
    branch[v-1][u-1]=w
dist=[float('inf')]*N
dist[0]=0
check={0}
while len(check)>0:
    now=check.pop()
    for nex,w in branch[now].items():
        if dist[nex]>dist[now]+w:
            dist[nex]=dist[now]+w
            check|={nex}
color=[d%2 for d in dist]
for i in range(N):
    print(color[i])
S = str(input())

if S == "RRR":
    print(3)
elif S == "RRS" or S == "SRR":
    print(2)
elif S == "SSS"
    print(0)
else:
    print(1)

### FIXED CODE ###

S = str(input())

if S == "RRR":
    print(3)
elif S == "RRS" or S == "SRR":
    print(2)
elif S == "SSS":
    print(0)
else:
    print(1)
a,b,c = map(int,input())
ans = a+b+c
if ans>=22:
    print("bust")
else:
    print("win")

### FIXED CODE ###

a,b,c = map(int,input().split())
ans = a+b+c
if ans>=22:
    print("bust")
else:
    print("win")
from bisect import bisect

X, N = [int(n) for n in input().split()]
if N==0:
    print(X)
else:
    P = sorted([int(n) for n in input().split()])
    idx = bisect(P, X)
    for i in range(P[idx-1], 101):
        if i not in P:
            ans_r = i
            break
    for j in range(1, P[idx-1]):
        if j not in P:
            ans_l = j
    if abs(X-ans_l) == abs(ans_r-X):
        print(min(ans_l, ans_r))
    else:
        print(ans_l if abs(X-ans_l) < abs(ans_r-X) else ans_r)


### FIXED CODE ###

from bisect import bisect

X, N = [int(n) for n in input().split()]
if N==0:
    print(X)
else:
    P = sorted([int(n) for n in input().split()])
    if X not in P:
        print(X)
        exit()
    idx = bisect(P, X)
    ans_r = 101
    ans_l = 0
    for i in range(P[idx-1], 101):
        if i not in P:
            ans_r = i
            break
    for j in range(1, P[idx-1]):
        if j not in P:
            ans_l = j
    if abs(X-ans_l) == abs(ans_r-X):
        print(min([ans_l, ans_r]))
    else:
        print(ans_l if abs(X-ans_l) < abs(ans_r-X) else ans_r)
a,b = map(int,input())
if (a*b)%2 == 0:
    print('Even')
else:
    print('Odd')

### FIXED CODE ###

a,b = map(int,input().split())
if (a*b)%2 == 0:
    print('Even')
else:
    print('Odd')
alpha=[int(intput()) for_in range(5)]
    k=int(intput())
    for a in alpha:
        for b in alpha:
            if abs(a-b)>k:
                print (':(')
                exit()
    print('Yay!')
             

### FIXED CODE ###

# -*- coding: utf-8 -*-


def main():
    alpha = [int(input()) for _ in range(5)]
    k = int(input())

    for a in alpha:
        for b in alpha:
            if abs(a - b) > k:
                print(':(')
                exit()

    print('Yay!')


if __name__ == '__main__':
    main()
import sys
#from scipy.special import comb
#from scipy.misc import comb

from operator import mul
from functools import reduce

def cmb(n,r):
    r = min(n-r,r)
    if r == 0: return 1
    over = reduce(mul, range(n, n - r, -1))
    under = reduce(mul, range(1,r + 1))
    return over // under

sys.setrecursionlimit(1000000)
nCr = {}
def cmb(n, r):
    if r == 0 or r == n: return 1
    if r == 1: return n
    if (n,r) in nCr: return nCr[(n,r)]
    nCr[(n,r)] = cmb(n-1,r) + cmb(n-1,r-1)
    return nCr[(n,r)]


def cmb(n, r):
    if n - r < r: r = n - r
    if r == 0: return 1
    if r == 1: return n

    numerator = [n - r + k + 1 for k in range(r)]
    denominator = [k + 1 for k in range(r)]

    for p in range(2,r+1):
        pivot = denominator[p - 1]
        if pivot > 1:
            offset = (n - r) % p
            for k in range(p-1,r,p):
                numerator[k - offset] /= pivot
                denominator[k] /= pivot

    result = 1
    for k in range(r):
        if numerator[k] > 1:
            result *= int(numerator[k])

    return result

N,M = list(map(int, input().split()))

A = [0]*M

for i in range(M):
    A[i] = int(input())

A.append(N+1)

def step_comb(L):
    c = 0
    if L==1 or L == 0:
        c = 1
    else:
        for i in range(L//2 +1):
            j = L - 2*i
            #c += comb(j+i, i, exact=True)
            c += cmb(j+i, i)
    return c

# DP version
DP = [0]*N
DP[0] = 1
# １段の階段を登るやり方の数
DP[1] = 1
# 2段の階段を登るやり方の数
DP[2] = 2

def step_comb(L):
    if DP[L]>0:
        return DP[L]
    DP[L] = step_comb(L-1) + step_comb(L-2)
    return DP[L]
    
total_comb = 1
NOW = 0
for a in A:
    if NOW == a:
        print(0)
        sys.exit()
    L = a-1-NOW
    total_comb *= step_comb(L)
    NOW = a + 1
    
print(total_comb % 1000000007 )


### FIXED CODE ###

import sys
sys.setrecursionlimit(100000000)

N,M = list(map(int, input().split()))

if M == 0:
    A = []
else:
    A = [0]*M
    for i in range(M):
        A[i] = int(input())

A.append(N+1)

# DP version
DP = [0]*(N+1)
DP[0] = 1
# １段の階段を登るやり方の数
DP[1] = 1
# 2段の階段を登るやり方の数
#DP[2] = 2

for i in range(2,N+1):
    DP[i] = DP[i-1] + DP[i-2]

def step_comb(L):
    if DP[L]>0:
        return DP[L]
    DP[L] = step_comb(L-1) + step_comb(L-2)
    return DP[L]
    
total_comb = 1
NOW = 0
for a in A:
    if NOW == a:
        print(0)
        sys.exit()
    L = a-1-NOW
    total_comb *= step_comb(L)
    NOW = a + 1
    if NOW == N:
        break
    
print(total_comb % 1000000007 )