Harryxun/stf_run huggingface dataset:
def add(n):
    return n + 1

if __name__ == "__main__":
    n = int(input())
    buf = input().split()
    a = [int(s) for s in buf]
    
    boxes = [0] * n

    for i in reversed(range(n)):
        pick_boxes = boxes[i::i+1]
        pick_boxes.pop(0)
        if pick_boxes:
            if (sum(pick_boxes) % 2) == a[i]:
                boxes[i] = 0
            else:
                boxes[i] = 1
        else:
            boxes[i] = a[i]

    box_name = [i for i, x in enumerate(boxes) if x == 1]
    box_name = list(map(add, box_name))
    print(len(box_name))
    if len(box_name) != 0:
        box_name = ' '.join(map(str,box_name))
        print(box_name)


### FIXED CODE ###

r = int(input())

print("{}".format(3*r**2))
S_input = str(input())
add_str_taple = ("dream", "dreamer", "erase", "eraser")

def recur_add(T):
    if T == S_input:
        print("YES")
        exit()
    elif len(T) < len(S_input):
        if S_input.startswith(T):
            for word in add_str_taple:
                recur_add(T+word)
        else:
            return
    else:
        return

recur_add("")
print("NO")

### FIXED CODE ###

import re
print("YES" if re.match("^(dream|dreamer|erase|eraser)+$", input()) else "NO")
N, K = map(int, input().split())
amari%=K

print(min(amari,abs(amari-k)))


### FIXED CODE ###


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

print(min(amari,abs(amari-K)))
a,b,c,k=map(int,input().split())
if a<k:
    print(k)
elif a+b>k:
    print(a)
elif a+b+c>k:
    print(a-(k-a-b))

### FIXED CODE ###

s=str(input())
t=str(input())
if s[:-1]==t or t[:-1]==s:
    print("Yes")
else:
    print("No")
a, b, c = map(int, input().split())

if ((a+b)==c) or ((b+c)==a ) or ((c+a)==b):
    print("Yes")
else:
    print("No")

### FIXED CODE ###

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

if a+b==c or b+c==a or c+a==b:
    print("Yes")
else:
    print("No")
A, B, C, D, E, F = map(int, input().split())

ans = []
max_conc = 0
for a in range(F // 100 + 1):
    for b in range(F // 100 + 1):
        w = 100 * a * A + 100 * b * B

        s_max = min(F - w, w * E // 100)
        if s_max >= 0:
            for c in range(s_max // C + 1):
                d_max = (s_max - c * C) // D

                if d_max >= 0:
                    # suger
                    s = c * C + d_max * D
                    if s + w > 0:
                        conc = s / (s + w)
                        if conc > max_conc:
                            ans = [s, w]

print(str(ans[0] + ans[1]) + ' ' + str(ans[0]))


### FIXED CODE ###

A, B, C, D, E, F = map(int, input().split())

ans = [0, 0]
max_conc = -1
for a in range(F // 100 + 1):
    left = F - 100 * a * A
    for b in range(left // 100 + 1):
        w = 100 * a * A + 100 * b * B

        s_max = min(F - w, w * E // 100)
        if s_max >= 0:
            for c in range(s_max // C + 1):
                d = (s_max - c * C) // D

                if d >= 0:
                    # suger
                    s = c * C + d * D
                    if s + w > 0:
                        conc = s / (s + w)
                        if conc > max_conc:
                            ans = [s, w]
                            max_conc = conc


print(str(ans[0] + ans[1]) + ' ' + str(ans[0]))
a=input()
b=input()
c=input()
d=input()
e=input()
k=input()
inp=[a,b,c,d,e]
i=0;
j=0;
kek=true
while i<5:
  j=i
  while j<5:
    if inp[j]-inp[i]>k:
      kek=false
      
if kek:
  print "Yay!"
else:
    print ":("  

### FIXED CODE ###

a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
k = int(input())
if (e-a)> k:
  print(":(")
else:
  print("Yay!")
x, n = map(int, input().split())
if n == 0:
    print(x)
else:
    p = list(map(int, input().split()))
    a = set(range(1, 200))
    b = list(a - set(p))
    c = [abs(i - x) for i in b]
    import numpy as np
    pos = np.argmin(c)
    print(min([b[y] for y in c if y == pos]))


### FIXED CODE ###

# ABC170C

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

if n == 0:
    p = set([])
else:
    p = list(map(int, input().split()))
a = list(set(range(201)) - set(p))
abs_diff = [abs(i - x) for i in a]
min_abs_diff = min(abs_diff)
for i, j in zip(a, abs_diff):
    if j == min_abs_diff:
        print(i)
        break
import sys
input=sys.stdin.readline
n,k=map(int,input().split())
lsw=[0]*(k*2)
for i in range(n):
  a,b,c=input().split()
  a=int(a)%(k*2)
  b=int(b)%(k*2)
  if c=="B":
    b=(b+k)%(k*2)
  if a>=k:
    b=(b+k)%(k*2)
  lsw[b]+=1
ans=[sum(lsw[:k])]
for i in range(1,k+1):
  ans.append(ans[-1]+lsw[k+i]-lsw[i])
print(max(ans))

### FIXED CODE ###

n,k = map(int,input().split())
xyc = [list(input().split()) for i in range(n)]
for i in range(n):
  x,y,c = xyc[i]
  x = int(x)
  y = int(y)
  xq = x//k
  yq = y//k
  if (xq+yq)%2:
    if c == "B":
      c = "W"
    else:
      c = "B"
  x %= k
  y %= k
  xyc[i] = x,y,c
gridw = [[0 for i in range(k+1)] for j in range(k+1)]
gridb = [[0 for i in range(k+1)] for j in range(k+1)]
for x,y,c in xyc:
  x += 1
  y += 1
  if c == "B":
    gridb[x][y] += 1
  else:
    gridw[x][y] += 1
for grid in gridb,gridw:
  for i in range(1,k+1):
    for j in range(k+1):
      grid[i][j] += grid[i-1][j]
for grid in gridb,gridw:
  for i in range(k+1):
    for j in range(1,k+1):
      grid[i][j] += grid[i][j-1]
nw = gridw[-1][-1]
nb = gridb[-1][-1]
ans = 0
def sm(grid,i,j):
  return grid[i][j]+grid[-1][-1]-grid[-1][j]-grid[i][-1]+grid[i][j]
for i in range(k+1):
  for j in range(k+1):
    x = sm(gridb,i,j)+nw-sm(gridw,i,j)
    ans = max(ans,x,n-x)
print(ans)
# 2019 6/9
# ABC129 C Typical Stairs
# fn: ways from 0 to n
# f(n) = f(n-1) + f(n-2)
# DP

import sys
sys.setrecursionlimit(100000)

dp = [-1] * 10005




CNT = 0
dp_list = [-1] * (100000 + 5)


def check_hole(M, broken_stairs):
    if len(broken_stairs) <= 1:
        return True
    for i in range(M - 1):
        if broken_stairs[i + 1] - broken_stairs[i] == 1:
            return False
    return True


def fib(n):
    global dp_list
    if n == 0 or n == 1 or n == 2:
        dp_list[0] = 0
        dp_list[1] = 1
        dp_list[2] = 2
        return dp_list[n]
    if dp_list[n] != -1:
        return dp_list[n]
    else:
        dp_list[n] = fib(n-1) + fib(n-2)
        return dp_list[n]


def count(broken_stairs, top_N, M):
    head = -1
    count_list = []
    if M == 1:
        count_list.append(broken_stairs[0] - 1)
        count_list.append(top_N - broken_stairs[0] - 1)
        return count_list
    else:
        for i in range(M):
            count_list.append(broken_stairs[i] - head - 2)
            head = broken_stairs[i]
        count_list.append(top_N - broken_stairs[-1] - 1)
        return count_list


def find_ans(broken_stairs, top_N, M):
    global CNT
    tmp = 1
    holes = count(broken_stairs, top_N, M)
    print('holes', holes)
    for i in holes:
        if i == 0:
            i = 1
        tmp *= fib(i)
    return tmp


if __name__ == '__main__':
    N, M = list(map(int, input().split()))
    broken_stairs = []
    for i in range(M):
        broken_stairs.append(int(input()))

    if M == 0:
        print(fib(N) % 1000000007)
        sys.exit()
    able = check_hole(M, broken_stairs)
    if not able:
        print(0)
    else:
        ans = find_ans(broken_stairs, N, M)
        print(dp_list[:10])
        print(ans % 1000000007)


### FIXED CODE ###

import sys

n, m = list(map(int, input().split()))
if m > 0:
    aaa = set(map(int, sys.stdin))
else:
    aaa = set()
dp = [0] * (n + 1)
dp[0] = 1
dp[1] = 1 if 1 not in aaa else 0
MOD = 10 ** 9 + 7

for i in range(2, n + 1):
    if i in aaa:
        continue
    dp[i] = (dp[i - 2] + dp[i - 1]) % MOD
print(dp[n])
W,H,x,y = list(map(float,input().split()))

ans = W * H
ans = float(float(ans) / 2.0)
ans2 = 0
if x == float(float(W) / 2) and y == float(float(H) / 2):
    ans2 = 1

print(ans + " " + ans2)

### FIXED CODE ###

W,H,x,y = list(map(float,input().split()))

ans = W * H
ans = float(float(ans) / 2.0)
ans2 = 0
if x == float(float(W) / 2) and y == float(float(H) / 2):
    ans2 = 1

print(str(ans) + " " + str(ans2))
n = int(input())
t, a = input().split(' ')
t = int(t)
a = int(a)
h = input().split(' ')

diff = 10000
point = 10000

for x in range(n):
    temp = t - int(h[x]) * 0.006
    tmp = abs(a - temp)

    if tmp < diff:
        diff = tmp
        point = x + 1

print(point)


### FIXED CODE ###

x, y = input().split(' ')
x = int(x)
y = int(y)
print(int(y / 2 + x))
Q = 10**9+7
def getInv(N):#Qはmod
    inv = [0] * (N + 1)
    inv[0] = 1
    inv[1] = 1
    for i in range(2, N + 1):
        inv[i] = (-(Q // i) * inv[Q%i]) % Q
    return inv

def getFactorialInv(N):
    inv = [0] * (N + 1)
    inv[0] = 1
    inv[1] = 1
    ret = [1]*(N+1)
    for i in range(2, N + 1):
        inv[i] = (-(Q // i) * inv[Q%i]) % Q
        ret[i] = ret[i-1]*inv[i]%Q
    return ret

def getFactorial(N):
    ret = [1]*(N+1)
    for i in range(2,N+1):
        ret[i] = ret[i-1]*i%Q
    return ret

def main():
    r1, c1, r2, c2 = map( int, input().split())
    F = getFactorial(2*10**6)
    I = getFactorialInv(10**6)

    def G(a, b):
        return F[a+b+2]*I[a+1]%Q*I[b+1]%Q
    
    print( ( G(r2,c2) - G(r2, c1-1) - G(r1-1, c2) + G(r1-1, c1-1))%Q)
if __name__ == '__main__':
    main()

### FIXED CODE ###

Q = 10**9+7
def getInv(N):#Qはmod
    inv = [0] * (N + 1)
    inv[0] = 1
    inv[1] = 1
    for i in range(2, N + 1):
        inv[i] = (-(Q // i) * inv[Q%i]) % Q
    return inv

def getFactorialInv(N):
    inv = [0] * (N + 1)
    inv[0] = 1
    inv[1] = 1
    ret = [1]*(N+1)
    for i in range(2, N + 1):
        inv[i] = (-(Q // i) * inv[Q%i]) % Q
        ret[i] = ret[i-1]*inv[i]%Q
    return ret

def getFactorial(N):
    ret = [1]*(N+1)
    for i in range(2,N+1):
        ret[i] = ret[i-1]*i%Q
    return ret

def main():
    r1, c1, r2, c2 = map( int, input().split())
    F = getFactorial(2*10**6+2)
    I = getFactorialInv(10**6+1)

    def G(a, b):
        return F[a+b+2]*I[a+1]%Q*I[b+1]%Q
    
    print( ( G(r2,c2) - G(r2, c1-1) - G(r1-1, c2) + G(r1-1, c1-1))%Q)
if __name__ == '__main__':
    main()
a,b =map(int, input().split)

if a <= 5 :
  print(0)
elif 5 < a <= 12 :
  print(b//2)
else :
  print(b)


### FIXED CODE ###

a,b = map(int,input().split())
 
if a <= 5 :
  print(0)
elif a <= 12 :
  print(int(b//2))
else :
  print(b)
import math

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

maxn=math.gcd(A,B)
list=[]
def isPrime(n):
    if n == 2:
        return True
    if n % 2 == 0:
        return False

    m = math.floor(math.sqrt(n)) + 1
    for p in range(3, m, 2):
        if n % p == 0:
            return False
        return True
def make_divisors(n):
    divisors = []
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    return divisors

yaku=make_divisors(maxn)
for i in range(len(yaku)):
    if isPrime(yaku[i]):
        list.append(yaku[i])

print(len(list))


### FIXED CODE ###

import math
import fractions
A,B = map(int,input().split())

maxn=fractions.gcd(A,B)
list=[]
def isPrime(n):
    if n == 2:
        return True
    if n % 2 == 0:
        return False
    if n==3:
        return True
    m = math.floor(math.sqrt(n)) + 1
    for p in range(3, m,2):
        if n % p == 0:
            return False
    return True
def make_divisors(n):
    divisors = []
    for i in range(1, int(n**0.5)+1):
        if n % i == 0:
            divisors.append(i)
            if i != n // i:
                divisors.append(n//i)

    return divisors

yaku=make_divisors(maxn)
for i in range(len(yaku)):
    if isPrime(yaku[i]):
        list.append(yaku[i])

print(len(list))
# Aizu Problem 0261: Mayan Crucial Prediction

import sys, math, os, datetime

# read input:
PYDEV = os.environ.get('PYDEV')
#if PYDEV=="True":
sys.stdin = open("sample-input.txt", "rt")

dpm = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] # day per month

 
def get_day(year, month, day):
    if month <= 2:
        year -= 1
        month += 12
    dy = 365 * (year - 1)
    c = year // 100
    dl = (year >> 2) - c + (c >> 2)
    dm = (month * 979 - 1033) >> 5
    return dy + dl + dm + day - 1

def from_day(n):
    a = n + 32044;
    b = (4 * n + 3) // 146097
    c = a - (146097 * b) // 4
    d = (4 * c + 3) // 1461
    e = c - (1461 * d) // 4
    m = (5 * e + 2) // 153
    m1 = m // 10
    day = e - (153 * m + 2) // 5 + 1
    month = m + 3 - 12 * m1
    year = 100 * b + d - 4800 + m1
    if year <= 0:
        year = -year + 1
    return year, month, day


offset = get_day(2012, 12, 21)
maya= [144000, 7200, 360, 20, 1]
    
while True:
    inp = input().strip()
    if inp == "#":
        break
    inp = [int(_) for _ in inp.split('.')]
    if len(inp) == 3:
        # christian to mayan:
        n = (get_day(inp[0], inp[1], inp[2]) - offset) % 1872000
        out = ""
        for k in range(4):
            out += str(n // maya[k]) + '.'
            n %= maya[k]
        out += str(n)
        print(out)
    else:
        # mayan to christian:
        n = sum([maya[k] * inp[k] for k in range(5)])
        #date = datetime.date.fromordinal(offset + n + 1)
        year, month, day = from_day(n + 2456283 + 1)
        print(str(year) + "." + str(month) + "." + str(day))

### FIXED CODE ###

#-*- coding: utf-8 _*_
import datetime
 
def is_leap(y):
    if y%400==0:   return True
    if y%100==0:   return False
    if y%4==0:     return True
    return False
 
def get_day(y,m,d):
    if m<=2:
        y-=1
        m+=12
    dy = 365*(y-1)
    c = y/100
    dl=(y>>2)-c+(c>>2)
    dm=(m*979-1033)>>5
    return dy+dl+dm+d-1
 
def solve(line):
    ipt = map(int, line.split("."))
#     print ipt
    if len(ipt) >3:
        n=0
        for i in range(5):  n+=ipt[i]*mm[i]
        date = datetime.date.fromordinal(offset+n+1)
        print str(date.year)+"."+str(date.month)+"."+str(date.day)
    else:
        n=get_day(*ipt)-offset
#         print n
        n%=1872000
        ret=""
        for i in range(4):
            ret+=str(n/mm[i])+"."
            n%=mm[i]
        ret+=str(n)
        print ret
 
if __name__=='__main__':
    # const
    mm=(144000,7200,360,20,1)
    w1=(0,0,31,59,90,120,151,181,212,243,273,304,334,365)
    w2=(0,0,31,60,91,121,152,182,213,244,274,305,335,366)
    offset = get_day(2012,12,21)
#     print datetime.MAXYEAR
     
    while True:
        line=raw_input()
        if line=="#":   exit()
        solve(line)
import math
T = int(input())
for _ in range(T):
  A, B, C, D = map(int, input().split())
  if B > D or B > A:
    print('No')
    continue
  if C >= B - 1:
    print('Yes')
    continue
  a = A % B
  step = math.gcd(B, D)
  k = (B - a + step - 1) // step - 1
  if C - a < k * step:
    print('No')
  else:
    print('Yes')

### FIXED CODE ###

def gcd(a, b):
  while b > 0:
    a, b = b, a % b
  return a

T = int(input())
for _ in range(T):
  A, B, C, D = map(int, input().split())
  if B > D or B > A:
    print('No')
    continue
  if C >= B - 1:
    print('Yes')
    continue
  a = A % B
  step = gcd(B, D)
  k = (B - a + step - 1) // step - 1
  if C - a < k * step:
    print('No')
  else:
    print('Yes')
h=int(input())
w=int(input())
n=int(input())
s=[[n for i in range(h)] for j in range(w)]
li=[]
for i in range(w):
  for j in range(h):
    s[i][j]=w*i+h*j-i*j
    if s[i][j]>=n:
      li.append(i+j)
print(min(li))

### FIXED CODE ###

h=int(input())
w=int(input())
n=int(input())

m=max(h,w)
if n%m==0:
  print(int(n/m))
else:
  print(int(n/m+1))
import math
x = map(int, (raw_input()).split(" "))

print math.sqrt((x[2]-x[0])*(x[2]-x[0]) + (x[3]-x[1])*(x[3]-x[1]))

### FIXED CODE ###

import math
x = map(float, (raw_input()).split(" "))

print math.sqrt((x[2]-x[0])*(x[2]-x[0]) + (x[3]-x[1])*(x[3]-x[1]))
import math
K = int(input())
ans = 0
for a in range(1, K+1):
  for b in range(1, a+1):
    for c in range(1, b+1):
      if a != b and b != c and c != a:
        ans += math.gcd(a,b,c) * 6
      elif a == b and b == c:
        ans += math.gcd(a,b,c)
      else:
        ans += math.gcd(a,b,c) * 3
print(ans)

### FIXED CODE ###

import math
K = int(input())
ans = 0
for a in range(1, K+1):
  for b in range(1, a+1):
    for c in range(1, b+1):
      if a != b and b != c and c != a:
        ans += math.gcd(math.gcd(a,b),c) * 6
      elif a == b and b == c:
        ans += math.gcd(math.gcd(a,b),c)
      else:
        ans += math.gcd(math.gcd(a,b),c) * 3
print(ans)
H,W = map(int,input().split())
S = list(input() for i in range(H))
Grid1 = [[0]*W for i in range(H)]
#print(S)
ans = 0
ws = [0]*W
for i in range(H):
    cou = 0
    l = 0
    for j in range(W):
        #print(i,j,S[i][j])
        if S[i][j] == ".":
            cou += 1
        else:
            for x in range(l,j):
                ws[x] = cou
            ws[j] = 0
            l = j+1
            cou = 0
        for x in range(l,j+1):
            ws[x] = cou
    Grid1[i] = ws.copy()
ws = [0]*H
    
for i in range(W):
    cou = 0
    l = 0
    for j in range(H):
        #print(i,j,S[i][j])
        if S[j][i] == ".":
            cou += 1
        else:
            for x in range(l,j):
                ws[x] = cou
            ws[j] = 0
            l = j+1
            cou = 0
        for x in range(l,j+1):
            ws[x] = cou
    for j in range(H):
        ans =max(Grid1[j][i] +ws[j], ans)

print(ans-1)

### FIXED CODE ###

H,W = map(int,input().split())
S = list(input() for i in range(H))
Grid1 = [[0]*W for i in range(H)]
for i in range(H):
    cou = 0
    l = 0
    for j in range(W):
        if S[i][j] == ".":
            cou += 1
        else:
            for x in range(l,j):
                Grid1[i][x] = cou
            l = j+1
            cou = 0
    for x in range(l,j+1):
        Grid1[i][x] = cou    
for i in range(W):
    cou = 0
    l = 0
    for j in range(H):
        #print(i,j,S[i][j])
        if S[j][i] == ".":
            cou += 1
        else:
            for x in range(l,j):
                Grid1[x][i] += cou
            l = j+1
            cou = 0
    for x in range(l,j+1):
        Grid1[x][i] += cou

print(max(max(Grid1[i]) for i in range(H))-1)
a,b=int(input().split())
cnt = 1
b -= a
if b == 1:
  print('0')
while True:
  if b > 0:
  	b -= (a - 1)
    cnt += 1
  else:
    print(cnt)
    break


### FIXED CODE ###

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

if b == 1:
  print('0')
else:
  cnt = 1
  b -= a
  while True:
    if b > 0:
      b -= (a - 1)
      cnt += 1
    else:
      print(cnt)
      break
import numba
INFTY = 10**12
@numba.jit
def wf(H):
    d = [[INFTY for _ in range(N+1)] for _ in range(N+1)]
    for i in range(1,N+1):
        d[i][i] = 0
        if i in H:
            for x in H[i]:
                j,c = x[0],x[1]
                d[i][j] = c
    for k in range(1,N+1):
        for i in range(1,N+1):
            for j in range(1,N+1):
                d[i][j] = min(d[i][j],d[i][k]+d[k][j])
    return d
N,M,L = map(int,input().split())
G = {}
for _ in range(M):
    A,B,C = map(int,input().split())
    if A not in G:
        G[A] = []
    G[A].append((B,C))
    if B not in G:
        G[B] = []
    G[B].append((A,C))
d1 = wf(G)
F = {}
for i in range(1,N):
    for j in range(i+1,N+1):
        if d1[i][j]<=L:
            if i not in F:
                F[i] = []
            F[i].append((j,1))
            if j not in F:
                F[j] = []
            F[j].append((i,1))
d2 = wf(F)
Q = int(input())
for _ in range(Q):
    s,t = map(int,input().split())
    if d2[s][t]<INFTY:
        print(d2[s][t]-1)
    else:
        print(-1)

### FIXED CODE ###

INFTY = 10**12
def wf(H):
    d = [[INFTY for _ in range(N+1)] for _ in range(N+1)]
    for i in range(1,N+1):
        d[i][i] = 0
        if i in H:
            for x in H[i]:
                j,c = x[0],x[1]
                d[i][j] = c
    for k in range(1,N+1):
        for i in range(1,N+1):
            for j in range(1,N+1):
                d[i][j] = min(d[i][j],d[i][k]+d[k][j])
    return d
N,M,L = map(int,input().split())
G = {}
for _ in range(M):
    A,B,C = map(int,input().split())
    if A not in G:
        G[A] = []
    G[A].append((B,C))
    if B not in G:
        G[B] = []
    G[B].append((A,C))
d1 = wf(G)
F = {}
for i in range(1,N):
    for j in range(i+1,N+1):
        if d1[i][j]<=L:
            if i not in F:
                F[i] = []
            F[i].append((j,1))
            if j not in F:
                F[j] = []
            F[j].append((i,1))
d2 = wf(F)
Q = int(input())
for _ in range(Q):
    s,t = map(int,input().split())
    if d2[s][t]<INFTY:
        print(d2[s][t]-1)
    else:
        print(-1)
N = input()
if N % 2 == 1:
	n = N + 1
else:
	n = N
print(n / 2)

### FIXED CODE ###

N = int(input())
if N % 2 == 1:
	n = N + 1
else:
	n = N
print(int(n / 2))
n,m=map(int,input().split())
p1=n
p2=m//2
if p1>p2:
 	print(p2)
else:
	delta=p2-p1
    print(delta//2+p1)

### FIXED CODE ###

n,m=map(int,input().split())
p1=n
p2=m//2
if p1>p2:
    print(p2)
else:
    delta=p2-p1
    print(delta//2+p1)
import sys
sys.setrecursionlimit(1000000)
n,m=map(int,input().split())
al=[int(input()) for i in range(m)]+[n+1]
mod=1000000007
ms=[0]*n

def dd(n):
    if ms[n]>0:
        return ms[n]
    if n==1:
        ms[n]=1
        return 1
    if n==2:
        ms[n]=2
        return 2
    m=dd(n-1)+dd(n-2)
    ms[n]=m
    return m

ans=1
now=0
b=-1
for a in al:
    if a-1==b:
        print(0)
        exit()
    b=a
    if a-1!=now:
        ans=(ans%mod)*(dd(a-now-1)%mod)%mod
    now=a+1

print(ans)

### FIXED CODE ###

import sys
sys.setrecursionlimit(1000000)
n,m=map(int,input().split())
al=[int(input()) for i in range(m)]+[n+1]
mod=1000000007
ms=[0]*(n+1)

def dd(n):
    if ms[n]>0:
        return ms[n]
    if n==1:
        ms[n]=1
        return 1
    if n==2:
        ms[n]=2
        return 2
    m=dd(n-1)+dd(n-2)
    ms[n]=m
    return m

ans=1
now=0
b=-1
for a in al:
    if a-1==b:
        print(0)
        exit()
    b=a
    if a-1!=now:
        ans=(ans%mod)*(dd(a-now-1)%mod)%mod
    now=a+1

print(ans)
n, k = map(int, input().split())
a = list(map(int, input().split()))
mod = 10**9 + 7
res = 1
a.sort(reverse=True)

if all(i <= 0 for i in a):
    for i in range(k):
        res = (res*a[i])%mod
else:
    right = n-1
    left = 0
    while k > 1:
        if a[right]*a[right-1] < a[left]*a[left+1]:
            res = (res*a[left]*a[left+1])%mod
            left += 2
        else:
            res = (res*a[right]*a[right-1])%mod
            right += 2
        k -= 2
    if k == 1:
        res = (res*max(a[left:right+1]))%mod
print(res)

### FIXED CODE ###

n, k = map(int, input().split())
a = list(map(int, input().split()))
mod = 10**9 + 7
res = 1
a.sort(reverse=True)
if a[0]<0 and k%2==1:
    for i in range(k):
        res = (res*a[i])%mod
else:
    right = n-1
    left = 0
    while k > 1:
        if a[right]*a[right-1] < a[left]*a[left+1]:
            res = (res*a[left])%mod
            left += 1
            k -= 1
        else:
            res = (res*a[right]*a[right-1])%mod
            right -= 2
            k -= 2
    if k == 1:
        res = (res*a[left])%mod

print(res)
N = int(input())
A = list(map(int, input().split()))

t = [0] * (10 ** 10)
ans = 0
for i in range(N):
    sa = i - A[i]
    ans += t[sa]
    wa = i + A[i]
    t[wa] += 1

print(ans)


### FIXED CODE ###

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

t = [0] * (N + 1)
ans = 0
for i in range(N):
    sa = i - A[i]
    if sa >= 0:
        ans += t[sa]
    wa = i + A[i]
    if wa < N:
        t[wa] += 1

print(ans)
N = int(input())
S = input()
T = input()
 
Q = ""
for i in range (N):
  Q = Q + S[i] + T[i]
  
print(Q

### FIXED CODE ###

N = int(input())
S,T = input().split()
 
Q = ""
for i in range (N):
  Q = Q + S[i] + T[i]
  
print(Q)