Harryxun/stf_run huggingface dataset:
import itertools
def list_difference(list1, list2):
    result = list1.copy()
    for value in list2:
        if value in result:
            result.remove(value)

    return len(result)


#n=int(input())
#a=[list(input()) for i in range(n)]
count=0
a=list(itertools.combinations(a,2))
for i in range(len(a)):
    if list_difference(a[i][0],a[i][1])==0:
        count+=1
print(count)

### FIXED CODE ###

import math
import collections

n=int(input())
a=[list(input()) for i in range(n)]
b=[str(sorted(list(i))) for i in a]
count=list(collections.Counter(b).values())
count=[i for i in count if i>1]
print(int(sum([math.factorial(x)/(math.factorial(x-2)*2) for x in count])))
s = input()
t = input()
Alphabet = []
Alphabet.append("a")
Alphabet.append("b")
Alphabet.append("c")
Alphabet.append("d")
Alphabet.append("e")
Alphabet.append("f")
Alphabet.append("g")
Alphabet.append("h")
Alphabet.append("i")
Alphabet.append("j")
Alphabet.append("k")
Alphabet.append("l")
Alphabet.append("m")
Alphabet.append("n")
Alphabet.append("o")
Alphabet.append("p")
Alphabet.append("q")
Alphabet.append("r")
Alphabet.append("s")
Alphabet.append("t")
Alphabet.append("u")
Alphabet.append("v")
Alphabet.append("w")
Alphabet.append("x")
Alphabet.append("y")
Alphabet.append("z")
flag = 0
S = sorted(s)
T = sorted(t,reverse = True)
for i in range(len(S)) :
    if S[i] == T[i] :
        flag += 1
    else :
        for j in range(len(Alphabet)) :
            if S[i] == Alphabet[j] :
                print("Yes")
                flag += -10000
                break
            elif T[i] == Alphabet[j] :
                print("No")
                flag += -10000
                break
            else :
                continue
        break
if flag == len(S) :
    if s != t :
        print("Yes")
    else :
        print("No")


### FIXED CODE ###

s = input()
t = input()
Alphabet = list(['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
)

flag = 0
S = sorted(s)
T = sorted(t,reverse = True)
for i in range(min(len(S),len(T))) :
    if S[i] == T[i] :
        flag += 1
    else :
        for j in range(len(Alphabet)) :
            if S[i] == Alphabet[j] :
                print("Yes")
                flag += -10000
                break
            elif T[i] == Alphabet[j] :
                print("No")
                flag += -10000
                break
            else :
                continue
        break
    
if flag == min(len(S),len(T)) :
    if len(S) >= len(T) :
        print("No")
    elif s != t :
        print("Yes")
    else :
        print("No")
#print(Alphabet)
s=input()
t=input()
if s==t-t[len(t)-1]:
  print('Yes')
else:
  print('No')


### FIXED CODE ###

s=input()
t=input()
if s==t[:len(t)-1]:
  print('Yes')
else:
  print('No')
import string


def count_changes(s, k, pool, i=0, prev=None):
    if k == 0:
        return 0
    t = s * k
    count = 0
    prev = prev or t[0]
    for cur in t[1:]:
        if cur == prev:
            count += 1
            prev = pool[i]
            i = (i + 1) % length
        else:
            prev = cur
    return count, i, prev


if __name__ == '__main__':
    s = input()
    k = int(input())
    pool = list(set(string.ascii_lowercase) - set(s))
    length = len(pool)
    if k <= 2:
        print(count_changes(s, k, pool)[0])
    else:
        base_count, i, prev = count_changes(s, 3, pool)
        d, rest = divmod(k, 3)
        print(base_count * d + count_changes(s, rest, pool, i, prev))

### FIXED CODE ###

def count_changes(s, k, prev=None):
    count = 0
    for _ in range(k):
        for cur in s:
            if cur == prev:
                count += 1
                prev = None
            else:
                prev = cur
    return count, prev


if __name__ == '__main__':
    s = input()
    k = int(input())
    if len(set(s)) == 1:
      print((len(s) * k) // 2)
      exit()
    if k <= 10 ** 8:
        print(count_changes(s, k)[0])
    else:
        base_count, prev = count_changes(s, 3)
        d, rest = divmod(k, 3)
        res = base_count * d
        if rest:
            res += count_changes(s, rest, prev)[0]
        elif s[0] == prev:
            res += (d - 1)
        print(res)
def f(a,b,c,d):
    if a<0 or b<0 or c<0 or d<0:
        return 0
    if d==0:
        return 1
    return f(a-1,b,c,d-10) + f(a,b-1,c,d-2)+f(a,b,c-1,d-1)
A=int(input())
B=int(input())
C=int(input())
D=int(input())
A//=50
B//=50
C//=50
D//=50
print(f(A,B,C,D))

### FIXED CODE ###

A=int(input())
B=int(input())
C=int(input())
print((A-B)%C)
N, M = map(int, input().split())
S = input()

steps = [[] for i in range(N)]
steps[0] = [0]
num_steps = 0
root = [0] + [-1]*N
pos = 1

while pos <= N:
  starts = steps[num_steps]
  if not starts:
    break
  for start in starts:
    end = min(start+M+1, N+1)
    for i in range(pos, end):
      if S[i] == '0':
        steps[num_steps+1].append(i)
        root[i] = start
    
    pos = end
  
  num_steps += 1


if root[N] == -1:
  ans = -1
else:
  pos = N
  ans = []
  while pos > 0:
    pre_pos = root[pos]
    ans.append(str(pos - pre_pos))
    pos = pre_pos
  
  ans = ans[::-1]
  ans = ' '.join(ans)


print(ans)

### FIXED CODE ###

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

steps = [[] for i in range(N+1)]
steps[0] = [0]
num_steps = 0
root = [0] + [-1]*N
pos = 1

while pos <= N:
  starts = steps[num_steps]
  if not starts:
    break
  for start in starts:
    end = min(start+M+1, N+1)
    for i in range(pos, end):
      if S[i] == '0':
        steps[num_steps+1].append(i)
        root[i] = start
    
    pos = end
  
  num_steps += 1


if root[N] == -1:
  ans = -1
else:
  pos = N
  ans = []
  while pos > 0:
    pre_pos = root[pos]
    ans.append(str(pos - pre_pos))
    pos = pre_pos
  
  ans = ans[::-1]
  ans = ' '.join(ans)


print(ans)
a=[]
for i in range(5):
    a.append(int(input()))

zako=9
switch=0
for i in range(5):
    b=a[i]%10
    if b<=zako and b!=0:
        zako=b
        memory=i
        switch=1

if switch=0:
    memory=1
x=a.pop(memory)

lst=[]

for i in range(4):
    c=a[i]//10
    c=c*10
    if a[i]%10!=0:
        c+=10
    lst.append(c)

print(x+sum(lst))

### FIXED CODE ###

a=[]
for i in range(5):
    a.append(int(input()))

zako=9
switch=0
for i in range(5):
    b=a[i]%10
    if b<=zako and b!=0:
        zako=b
        memory=i
        switch=1

if switch==0:
    memory=1
x=a.pop(memory)

lst=[]

for i in range(4):
    c=a[i]//10
    c=c*10
    if a[i]%10!=0:
        c+=10
    lst.append(c)

print(x+sum(lst))
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
 
N, K = map(int, input().split())

for i in range(1,K+1):
  blue = cmb(K-1, i-1)
  red = cmb(N-K+1, i)
  print((blue * red) % (10**9+7))

### FIXED CODE ###

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
 
N, K = map(int, input().split())

for i in range(1,K+1):
  if N-K+1 < i:
    print(0)
    continue
  blue = cmb(K-1, i-1)
  red = cmb(N-K+1, i)
  print((blue * red) % (10**9+7))
N=int(input())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
C=list(map(int,input().split()))

satisfaction=0

for i in range(N-1)
    if  A[i]+1==A[i+1]:
        satisfaction+=C[A[i]]+B[i]
 
    
    else:
        satisfaction+=B[i]

print(satisfaction)

### FIXED CODE ###

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

satisfaction=0

for i in range(N):
  satisfaction+=B[A[i]-1]
    
  if  i<=N-2:
      if  A[i]+1==A[i+1]:
          satisfaction+=C[A[i]-1] 
  else:
      pass

print(satisfaction)
def dfs(tree, n, ans):
    for i in tree[n]:
        ans[i] += ans[n]
        tree[i].remove(n)
        dfs(tree, i, ans)

n, q = map(int,input().split())
ab = [list(map(int,input().split())) for _ in range(n-1)]
px = [list(map(int,input().split())) for _ in range(q)]

g = [[] for _ in range(n)]
for i in range(n-1):
    g[ab[i][0]-1].append(ab[i][1]-1)
    g[ab[i][1]-1].append(ab[i][0]-1)

ans = [0]*n
for i in range(q):
    ans[px[i-1][0]-1] += px[i-1][1]
dfs(g, 0, ans)

print(*ans)

### FIXED CODE ###

import sys
sys.setrecursionlimit(10**6)
def dfs(tree, n, ans):
    for i in tree[n]:
        ans[i] += ans[n]
        tree[i].remove(n)
        dfs(tree, i, ans)

n, q = map(int,input().split())
ab = [list(map(int,input().split())) for _ in range(n-1)]
px = [list(map(int,input().split())) for _ in range(q)]

g = [[] for _ in range(n)]
for i in range(n-1):
    g[ab[i][0]-1].append(ab[i][1]-1)
    g[ab[i][1]-1].append(ab[i][0]-1)

ans = [0]*n
for i in range(q):
    ans[px[i-1][0]-1] += px[i-1][1]
dfs(g, 0, ans)

print(*ans)
while 1: 
	h,w=map(int, input().split())
	if (h==0) or (w==0): break

	else:
		print("#"*w)
		for I in  range(h-2):
		print("#"+"."*(w-2)+"#")
		print("#"*w)
 


### FIXED CODE ###

while 1:
        (H,W)=[int(i) for i in input().split()]
        if H==W==0:
                break
        print('#'*W)
        for i in range(H-2):
                print('#'+'.'*(W-2)+'#')
        print('#'*W)
        print('')
ko


### FIXED CODE ###

a, b = map(int, input().split())
if a < b:
    print('a < b')
elif a > b:
    print('a > b')
else:
    print('a == b')
n=len(s)
x=n//2
a=s[0:x]
b=s[x+1:]
if a==b:print('Yes')
else:print('No')

### FIXED CODE ###

s=input()
n=len(s)
x=n//2
a=s[0:x]
b=s[x+1:]
if a==b:print('Yes')
else:print('No')
a, b, c, x, y=map(int, input().split())
m=2＊x＊c
n=c＊y＊2+a＊(x-y)
d=2＊y＊c
e=c＊x＊2+b＊(y-x)
f=a＊x+b＊y
g=min(m,n,f)
h=min(d,e,f)
if a[3]>=a[4]:
    print(g)
else:
    print(h)


### FIXED CODE ###

a, b, c, x, y = map(int, input().split())
res = 0
if a+b > c*2:
    mi = min(x, y)
    res += c*2 * mi
    x -= mi
    y -= mi
res += x * min(a, c*2)
res += y * min(b, c*2)
print(res)
import sys
while 1:
	temp = input()
	if (temp==0):
		break
	N = temp
	a = []
	for i in range(N):
	    a.append(map(int, raw_input().split())+[0])
	a.append([0 for i in range(0,temp+1)])	 
	for i in range(0,temp):#行に関して
		for j in range(0,temp):#列に関して
			a[i][temp] += a[i][j]
	for k in range(0,temp+1):#列に関して
		for l in range(0,temp):#行に関して
			a[temp][k] += a[l][k]
	for m in range(0,temp+1):
		for n in range(0,temp+1):
			sys.stdout.write(str(a[m][n]).rjust(5))
		print ""

### FIXED CODE ###

import sys
try:
	while 1:
		temp = input()
		if (temp==0):
			break
		N = temp
		a = []
		for i in range(N):
			a.append(map(int, raw_input().split())+[0])
		a.append([0 for i in range(0,temp+1)])
		for i in range(0,temp):
			for j in range(0,temp):
				a[i][temp] += a[i][j]
		for k in range(0,temp+1):
			for l in range(0,temp):
				a[temp][k] += a[l][k]
		for m in range(0,temp+1):
			for n in range(0,temp+1):
				sys.stdout.write(str(a[m][n]).rjust(5))
			print ""
except(RuntimeError):
	pass
#coding: UTF-8
import math

def Circle_Area(r):
    print(format(r*r*math.pi,'.6f'),format(2*r*math.pi,'.6f'))

if __name__=="__main__":
    Circle_Area(int(input()))

### FIXED CODE ###

#coding: UTF-8
import math

def Circle_Area(r):
    print(format(r*r*math.pi,'.6f'),format(2*r*math.pi,'.6f'))

if __name__=="__main__":
    Circle_Area(float(input()))
import math
if __name__ == '__main__':
    n = int(input())
    for _ in range(n):
        x1,y1,x2,y2,x3,y3,x4,y4 = map(float,input().split())
        #print((y2-y1)/(x2-x1) - (y4-y3)/(x4-x3))
        '''if math.fabs(x1 - x2) <= 0.00001 and math.fabs( x3 - x4) <= 0.00001:
            print("YES")
        elif math.fabs(x1 - x2) <= 0.00001:
            print("NO")
        elif math.fabs(x3 - x4) <= 0.00001:
            print("NO")
        else:
        '''
        if math.fabs((y2-y1)//(x2-x1) - (y4-y3)//(x4-x3)) <= 0.00001:
            print("YES")
        else:
            print("NO")

### FIXED CODE ###

if __name__ == '__main__':
    n = int(input())
    for _ in range(n):
        x1,y1,x2,y2,x3,y3,x4,y4 = map(float,input().split())
        #print((y2-y1)/(x2-x1) - (y4-y3)/(x4-x3))
        '''if math.fabs(x1 - x2) <= 0.00001 and math.fabs( x3 - x4) <= 0.00001:
            print("YES")
        elif math.fabs(x1 - x2) <= 0.00001:
            print("NO")
        elif math.fabs(x3 - x4) <= 0.00001:
            print("NO")
        else:
        '''
        if abs((x2-x1) * (y4-y3)-(x4-x3)*(y2-y1)) < 1e-10:
            print("YES")
        else:
            print("NO")
w,h,n= map(int,input().split())
s=[]
for i in range(n):
    s.append(list(int(input())))
l=0
d=0
for j in range(n):
    if s[j][2]==1 and s[j][0]>l:
        l=s[j][0]
    elif s[j][2]==2 and s[j][0]<w:
        w=s[j][0]
    elif s[j][2]==3 and s[j][1]>d:
        d=s[j][1]
    elif s[j][2]==4 and s[j][1]<h:
        h=s[j][1]

if h-d>0 and w-l>0:
    print((h-d)*(w-l))
else:
    print(0)


### FIXED CODE ###

w,h,n= map(int,input().split())
s=[]
for i in range(n):
    s.append(list(map(int,input().split())))
l=0
d=0
for j in range(n):
    if s[j][2]==1 and s[j][0]>l:
        l=s[j][0]
    elif s[j][2]==2 and s[j][0]<w:
        w=s[j][0]
    elif s[j][2]==3 and s[j][1]>d:
        d=s[j][1]
    elif s[j][2]==4 and s[j][1]<h:
        h=s[j][1]

if h-d>0 and w-l>0:
    print((h-d)*(w-l))
else:
    print(0)
s=input()
n=len(s)
sum=0

for i in range(n):
  if s(i)!=s(n-i):
    sum+=1
    print(sum//2)

### FIXED CODE ###

s=input()
cnt=0
for i in range(len(s)//2):
  if s[i]!=s[(i*(-1))-1]:
    cnt+=1
print(cnt)
n=list(map(int,input().split))
n_re=n.reverse()
if n==n_re:
    print("Yes")
else:
    print("No")


### FIXED CODE ###

n=list(map(int,input()))
re=n[::-1]
for i in range(len(n)):
    if n[i]==re[i]:
        print("Yes")
        break
    else:
        print("No")
        break
n,a,b = map(int,input().split())

nums=list(map(int,input().split))
tmp=nums[0]
ans=0
for num in nums[1:]:
  if (nuw-tmp)*a<=b: 
    ans+=(num-tmp!)*a
  else:
    ans+=b
  tmp=num

print(ans)

### FIXED CODE ###

n,a,b = map(int,input().split())

nums=list(map(int,input().split()))
tmp=nums[0]
ans=0
for num in nums[1:]:
  if (num-tmp)*a<=b: 
    ans+=(num-tmp)*a
  else:
    ans+=b
  tmp=num

print(ans)
import sys
sys.setrecursionlimit(100)

N = int(input())
X = [[] for _ in range(N)]
for _ in range(N-1):
    u, v, w = map(int, input().split())
    X[u-1].append((v-1, w%2))
    X[v-1].append((u-1, w%2))

D = [-1] * N
def calc(i, c):
    D[i] = c
    for j, w in X[i]:
        if D[j] < 0:
            calc(j, D[i]^w)

calc(0, 0)
for d in D:
    print(d)

### FIXED CODE ###

import sys
sys.setrecursionlimit(1000000)

N = int(input())
X = [[] for _ in range(N)]
for _ in range(N-1):
    u, v, w = map(int, input().split())
    X[u-1].append((v-1, w%2))
    X[v-1].append((u-1, w%2))

D = [-1] * N
def calc(i, c):
    D[i] = c
    for j, w in X[i]:
        if D[j] < 0:
            calc(j, D[i]^w)

calc(0, 0)
for d in D:
    print(d)
nums = [int(e) for e in input().split()]
a = int(nums[0]/nums[1])
b = int(nums[0]%nums[1])
c = nums[0]/nums[1] - a
print(a,b,c)a


### FIXED CODE ###


nums = [int(e) for e in input().split()]
a = int(nums[0]/nums[1])
b = int(nums[0]%nums[1])
c = "{:.5f}".format(nums[0]/nums[1])
print(a,b,c)
r, g, b, n = map(int, raw_input().split())
count = 0
for i in xrange(3000):
	if i*r > n:
    	break
	for j in xrange(3000):
    	if i*r + j*g > n:
      		break
		if (n-i*r - j*g)% b == 0:
      		count += 1
print count

### FIXED CODE ###

r, g, b, n = map(int, raw_input().split())
count = 0
for i in xrange(n+1):
    if i*r > n:
        break	
    for j in xrange(n+1):
        if i*r + j*g > n:
            break
        if (n- i*r - j*g) % b == 0:
      		count += 1
print count
H,W=map(int,input().split())
set1=set()
list=list()
for i in range(H):
    S=input()
    if S.count('.') != W:
        list.append(S)
    tmp=[*S]
    tmp=[int(i) for i,x in enumerate(tmp) if x == '.']
    if not set1:
        tmp_set = set(tmp)
        set1=set1.union(tmp_set)
    else:
        tmp_set = set(tmp)
        set1 &=tmp_set
for x in list:
    str=''
    if not set1:
        for i in range(W):
            str+=x[i]
    else:
        for i in range(W):
            if i not in set1:
                str+=x[i]
    print(str)
    str=''


### FIXED CODE ###

H,W=map(int,input().split())
st=set()
list=list()
for i in range(H):
    S=input()
    if S.count('.') != W:
        list.append(S)
    tmp=S
    tmp=[int(i) for i,x in enumerate(tmp) if x == '.']
    if not st:
        tmp_set = set(tmp)
        st=st.union(tmp_set)
    else:
        tmp_set = set(tmp)
        st &=tmp_set
for x in list:
    str=''
    if not st:
        for i in range(W):
            str+=x[i]
    else:
        for i in range(W):
            if i not in st:
                str+=x[i]
    print(str)
    str=''
n,a,b = map(int, input().split())
w = ("b"*a + "r"*b)*(n//(a+b))
if n%(a+b) <= a:
    w += "b"*(n%(a+b))
print(w.count('b'))

### FIXED CODE ###

n,a,b = map(int, input().split())
blue = a*(n//(a+b))
if n%(a+b) <= a:
    blue += n%(a+b)
else:
    blue += a
print(blue)
X, Y, A, B, C = map(int, input().split())
p = list(map(int, input().split()))
q = list(map(int, input().split()))
r = list(map(int, input().split()))
p.sort(reverse=True)
q.sort(reverse=True)
r.sort(reverse=True)
eat_p = p[:X]
eat_q = q[:Y]

ans = sum(eat_p) + sum(eat_q)
i, j, k = -1, -1, 0
while eat_p[i] < r[k] or eat_q[j] < r[k]:
    if eat_p[i] < eat_q[j]:
        ans += r[k] - eat_p[i]
        k += 1
        i -= 1
    else:
        ans += r[k] - eat_q[j]
        k += 1
        j -= 1
    if k == C:
        break
    if i == -A:
        i = 0
    if j == -B:
        j = 0

print(ans)


### FIXED CODE ###

X, Y, A, B, C = map(int, input().split())
p = list(map(int, input().split()))
q = list(map(int, input().split()))
r = list(map(int, input().split()))
p.sort(reverse=True)
q.sort(reverse=True)
eat_p = p[:X]
eat_q = q[:Y]

all_apple = eat_p + eat_q + r
all_apple.sort(reverse=True)

print(sum(all_apple[:X+Y]))
N = int(input())
A = {input().split()}
print('YNEOS'[len(A)==N::2])


### FIXED CODE ###

N = int(input())
A = set(input().split())
print('YNEOS'[len(A)!=N::2])
import math


import sys
sys.setrecursionlimit(10000)

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 f(a,b):
    return cmb(a+b-1,b-1)

def acinput():
    return list(map(int, input().split(" ")))

N,K=acinput()

B=K
R=N-K


for i in range(1,K+1):
    _B=B-i
    _R=R-i+1

    PB=f(_B,i)
    PR=f(_R,i+1)

    #print("b r",B,R,_B,_R)
    #print(PB,PR)
    print(int(PB*PR)%(10**9+7))



### FIXED CODE ###



import sys
sys.setrecursionlimit(40000)

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)
    nCr[(n,r)]=nCr[(n,r)]
    return nCr[(n,r)]


def f(a,b):
    #print(a,b)
    if b<0 or a<0:    
        return 0
    return cmb(a+b-1,b-1)

def acinput():
    return list(map(int, input().split(" ")))

N,K=acinput()

B=K
R=N-K


for i in range(1,K+1):
    _B=B-i
    _R=R-i+1

    PR=f(_R,i+1)
    if PR>0:
        PB=f(_B,i)
    else:
        PB=1
    

    #print("b r",_B,_R)
    #print(PB,PR)
    print(int(PB*PR)%(10**9+7))
N = int(input())
count = [0]*N
for i in range(N):
	x, y = [int(x) for x in input().split()]
    count[x-1] += 1
    count[y-1] += 1
for c in N:
    print(c)

### FIXED CODE ###

N, M = [int(x) for x in input().split()]
count = [0]*N
for i in range(M):
	x, y = [int(x) for x in input().split()]
	count[x-1] += 1
	count[y-1] += 1
for c in count:
	print(c)
a=int(input())
b=''
while a:
  s=str(a&1)+s
  n=-(n//2)
print(b if b else 0)

### FIXED CODE ###

a=int(input())
b=[]
if a==0:
	print(0)
while a:
	b.append(a&1)
	a-=a&1
	a=int(a/-2)

print(''.join(map(str,b[::-1])))
figure = ''
patterns = ['', '#', '.']
p_selector = 1
height, width = [int(x) for x in input().split()]
while height or width:
    for h in range(height):
        for w in range(weight):
            figure += patterns[p_selector]
            p_selector *= -1
        figure += '\n'
    figure += '\n'
    height, width = [int(x) for x in input().split()]
 
print(figure[:-1])

### FIXED CODE ###

figure = ''
height, width = [int(x) for x in input().split()]
while height or width:
    pattern = '#.' * (width//2 + 1)
    for h in range(height):
            figure += pattern[h%2 : h%2 + width] + '\n'
    figure += '\n'
    height, width = [int(x) for x in input().split()]
 
print(figure[:-1])
n=int(input())

a=[0]*n
aa=0
for i in range(n):
    b=set(list(str(i)))
    if len(b)==3:
        if b.count("7")>0 and b.count("5")>0 and b.count("3")>0:
            aa+=1
    a[i]+=aa


print(a[n-1])

### FIXED CODE ###

from itertools import product
n = int(input())
cnt = 0
for i in range(3,10):
    for m in product(["3","5","7"],repeat = i):
        if "3" in m and "5" in m and "7" in m and int("".join(m))<=n:
            cnt += 1
print(cnt)
def main():
    
    deck = set()
    for item in range(1,14):
        deck = deck | {('H ' + str(item))}
        deck = deck | {('D ' + str(item))}
        deck = deck | {('C ' + str(item))}
        deck = deck | {('S ' + str(item))}
    suits_order = ['S', 'H', 'C', 'D']
    
    n = int(input())
    cards = [input() for i in range(n)]
    remains = sorted(
        sorted(list(deck - set(cards)), key = lambda x: suit_order.index(x[:1])), 
        key = lambda x: int(x[2:]))
    for item in remains:
        print(item)


main()

### FIXED CODE ###

def main():
    
    deck = set()
    for item in range(1,14):
        deck = deck | {('H ' + str(item))}
        deck = deck | {('D ' + str(item))}
        deck = deck | {('C ' + str(item))}
        deck = deck | {('S ' + str(item))}
    suits_order = ['S', 'H', 'C', 'D']
    
    n = int(input())
    cards = [input() for i in range(n)]
    remains = sorted(sorted(list(deck - set(cards)), key = lambda x: int(x[2:])), key = lambda x: suits_order.index(x[:1]))
    for item in remains:
        print(item)


main()
list = input()
i = 0
while True:
	if i>3:
    	break
	print(list[0][0:1],end='')
    i += 1

### FIXED CODE ###

list = input().split()
i = 0
while True:
	if i>2:
		break
	print(list[i][0:1],end='')
	i += 1
import sys
n, m = map(int, input().split())
a_list = []
for i in range(m):
    a_i = int(input())
    a_list.append(a_i)
#print(n, m, a_list)
#print(a_list)
flag = 0

'''
def stepup(x):
    #x段
    ans = 0
    for i in range(x):
        if i==0:
            two_before=1
            ans=1
        elif i==1:
            one_before=2
            ans=2
        else:
            #print(two_before, one_before)
            ans = one_before+two_before
            two_before = one_before
            one_before = ans
    return(ans)
'''
def stepup(x):
    x += 1
    ans = ((1 + 5**0.5) / 2)**x / 5**0.5 + 0.5
    return(int(ans))

#print(stepup(1))
#print(a_list)
for i in range(m):
    if i==0:
        if a_list[i]==1:
            count = 1
            continue
        else:
            count = stepup(a_list[0]-1)
    else:
        if a_list[i]-a_list[i-1]==1:
            #print(a_list[i], a_list[i-1])
            flag = 1
            break
        elif a_list[i]-a_list[i-1]==2:
            pass
        else:
            #print(stepup(23))
            #print(i, stepup(a_list[i]-a_list[i-1]))
            count *= stepup(a_list[i]-a_list[i-1]-2)
    #print(count)
#print(len(a_list), m)
if n-a_list[m-1]==1:
    pass
else:
    count *= stepup(n-a_list[i]-1)
#print(count)

if flag==1:
    print(0)
else:
    print(count%1000000007)
#print((stepup(20)**4 * stepup(10))%1000000007)


### FIXED CODE ###

# coding: utf-8

n, m = map(int, input().split())
z = 10**9 + 7

ans = [1]
if m != 0:
    a_i = int(input())
else:
    a_i = 0
m_count = 1
if a_i == 1:
    ans.append(0)
    if m_count < m:
        a_i = int(input())
        m_count += 1
else:
    ans.append(1)
        
for i in range(2, n+1):
    if a_i == i:
        ans.append(0)
        if m_count < m:
            a_i = int(input())
            m_count += 1
    else:
        ans.append(ans[i-1]+ans[i-2])
        
# print(ans, ans[67])
print(int(ans[-1]%z))