Harryxun/stf_run huggingface dataset:
import math
n=int(input())
l=[int(input()) for i in range(n)]
ans=math.ceil(n/len(l))+4
print(ans)

### FIXED CODE ###

import math
n=int(input())
l=[int(input()) for i in range(5)]
ans=math.ceil(n/min(l))+4
print(ans)
s=input()
sl=[]
ans=0
for iii in range(2**(len(s)-1)):
  sind='{:0'+str(len(s)-1)+'b}'
  astr=sind.format(iii)
  astr=astr.replace("1","+")
  astr=astr.replace("0","x")
  lans=s[0]
  for jjj in range(len(astr)):
    lans+=astr[jjj]+s[jjj+1]
  lans=lans.replace("x","")
  ans+=int(eval(lans))
print(ans)
      

### FIXED CODE ###

s=input()
sl=[]
ans=0
if len(s)==1:
  print(int(s))
else:
  for iii in range(2**(len(s)-1)):
    sind='{:0'+str(len(s)-1)+'b}'
    astr=sind.format(iii)
    astr=astr.replace("1","+")
    astr=astr.replace("0","x")
    lans=s[0]
    for jjj in range(len(astr)):
      lans+=astr[jjj]+s[jjj+1]
    lans=lans.replace("x","")
    ans+=int(eval(lans))
  print(ans)
while True:
    W,H = [int(x) for x in input().split()]
    if W==0 and H==0:
        exit()
    tiles = []
    X = 0
    Y = 0
    for i in range(H):
        tiles.append(input())
        if '@' in tiles[i]:
            Y = i
            X = tiles[i].index('@')
    d = [[9999 for j in range(H*W)] for i in range(H*W)]
    for i in range(H*W):
        d[i][i] = 0
    for i in range(H):
        for j in range(W):
            if j>0:
                if tiles[i][j] in '.@' and tiles[i][j-1] in '.@':
                    d[W*i+j][W*i+j-1] = 1
            if j<W-1:
                if tiles[i][j] in '.@' and tiles[i][j+1] in '.@':
                    d[W*i+j][W*i+j+1] = 1
            if i>0:
                if tiles[i][j] in '.@' and tiles[i-1][j] in '.@':
                    d[W*i+j][W*i+j-W] = 1
            if j<H-1:
                if tiles[i][j] in '.@' and tiles[i+1][j] in '.@':
                    d[W*i+j][W*i+j+W] = 1
    for k in range(H*W):
        for i in range(H*W):
            for j in range(H*W):
                if d[i][j] > d[i][k]+d[k][j]:
                    d[i][j] = d[i][k]+d[k][j]
    cnt = 0
    for i in range(H*W):
        if d[X+Y*H][i]<9999:
            cnt += 1
    print(cnt)

### FIXED CODE ###

def dfs(tiles, w, h, x, y):
    cnt = 1
    tiles[y][x] = '@'
    for dx,dy in ((0,1), (0,-1), (-1,0), (1,0)):
        if 0<=x+dx<w and 0<=y+dy<h and tiles[y+dy][x+dx]=='.':
            cnt += dfs(tiles, w, h, x+dx, y+dy)
    return cnt

def main():
    while True:
        W,H = [int(x) for x in input().split()]
        if W==0 and H==0:
            exit()
        tiles = [[c for c in input()] for h in range(H)]
        for i in range(H):
            if '@' in tiles[i]:
                Y = i
                X = tiles[i].index('@')
        answer = dfs(tiles, W, H, X, Y)
        print(answer)

if __name__ == '__main__':
    main()
N = int(input())
s = list(map(int, input().split()))

m = min(s)
M = max(s)

lis = []
ans = 0

for i in range(m,M):
  for j in range(N):
  	ans += (s[j] - i) ** 2
  lis.append(ans)
  ans = 0
  
print(min(lis))

### FIXED CODE ###

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

m = s[0]
M = s[N-1]

lis = []
ans = 0

for i in range(1000):
  for j in range(N):
  	ans += (s[j] - i) ** 2
  lis.append(ans)
  ans = 0
  
print(min(lis))
import sys

sys.setrecursionlimit(10000)

n, m = map(int, input().split())
broken = []
for i in range(m):
    broken.append(int(input()))
    if len(broken) > 1 and broken[-2] + 1 == broken[-1]:
        print(0)
        exit()
    

dp = [0] * (n + 1)

def rec(i):
    global dp
    if dp[i] > 0:
        return dp[i]
      
    if i in broken:
        return 0
    
    if i >= n - 1:
        return 1
    
    dp[i] = rec(i + 1) + rec(i + 2)
    
    return dp[i]
            
print(rec(0)%1000000007)


### FIXED CODE ###

n,m = map(int,input().split())
broken = [True] * (n+1)
for _ in range(m):
    broken[int(input())] = False

mod = 10 ** 9 + 7

dp = [0] * (n+1)
dp[-1] = 1
if broken[n-1]:
    dp[n-1] = 1

for i in reversed(range(n-1)):
    if broken[i]:
        dp[i] = (dp[i+1] + dp[i+2]) % mod
        
print(dp[0])
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w%2))
    a[v-1].append((u-1,w%2))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])

### FIXED CODE ###

import sys
sys.setrecursionlimit(10**7)
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w))
    a[v-1].append((u-1,w))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])
def main():
    N, M = map(int, input().split())
    if N >= M:
        print(0)
        return

    X = list(map(int, input().split()))
    X.sort()
    dist = [abs(X[i] - X[i+1]) for i in range(M-1)]
    ranking = [[i for i in range(N-1)], [dist[i] for i in range(N-1)]]
    for i in range(N-1, M-1):
        mind = min(ranking[1])
        if dist[i] > mind:
            ind = ranking[1].index(mind)
            ranking[0][ind] = i
            ranking[1][ind] = dist[i]

    ranking[0].sort()
    ans = 0
    start = 0
    for i in range(M-1):
        if i not in ranking[0]:
            ans += dist[i]

    print(ans)


if __name__ == "__main__":
    main()


### FIXED CODE ###

def main():
    N, M = map(int, input().split())
    X = list(map(int, input().split()))
    if N >= M:
        print(0)

    else:
        X.sort()
        dist = [abs(X[i] - X[i+1]) for i in range(M-1)]
        dist.sort()
        ans = sum(dist[:(M-N)])
        print(ans)


if __name__ == "__main__":
    main()
def a(t,i):
    if i=l-1:
        print(sum(int(t.split('+'))))
        exit()
    a(t+s[i+1])+a(t+'+'+s(i+1))

s=input()
a(s[0],0)
l = s.len()

### FIXED CODE ###

def dfs(i,s):
    if i==n-1:
        return sum(map(int,s.split('+')))
    return dfs(i+1,s+S[i+1])+dfs(i+1,s+'+'+S[i+1])

S=input()
n=len(S)
ans=dfs(0,S[0])
print(ans)
def solve(n):
  m = 0
  while n > 0:
    m += n%10
    n //= 10
  if m%n != 0:print("No")
  else:print("Yes")

n = int(input())
solve(n)


### FIXED CODE ###

N=int(input())
n=N
a=0
while n!=0:
    a+=n%10
    n=n//10
if N%a==0:
    print('Yes')
else:
    print('No')
H,W= map(int, input() .spilit())


if H % 2 ==0:
    N = H * W / 2

else:
    N = int(H * W / 2) + 1

print(N)

### FIXED CODE ###

H , W = map(int, input() .split())

if W == 1:
    N = 1

elif H == 1:
    N = 1

else:   
    if H % 2 ==0:
        N = H * W / 2
        
            
    elif H % 2 ==1:
        if W % 2 ==0:
            N = H * W / 2
        else:
            N = int(H * W / 2) + 1

print(int(N))
import sys
sys.setrecursionlimit(10 ** 7)
input = sys.stdin.readline

from math import gcd


n = int(input())
a = list( map(int, input().split()))
a.sort()

lc = [0]
for aa in a:
    lc.append(gcd(lc[-1], aa))

if lc[-1] != 1:
    print('not coprime')
    exit()

def eratosthenes(limit):
    import math
    if not isinstance(limit, int):
        raise TypeError('n is int type.')
    if limit < 2:
        raise ValueError('n is more than 2')
    prime = []
    sqrt_limit = math.sqrt(limit)
    prime_numbers_list = [i + 1 for i in range(1, limit)]
    while True:
        p = prime_numbers_list[0]
        if sqrt_limit <= p:
            return prime + prime_numbers_list
        prime.append(p)
        prime_numbers_list = [e for e in prime_numbers_list if e % p != 0]
    return prime_numbers_list

prime_numbers_list = eratosthenes(int((a[-1])**0.5))

count = [0]*len(prime_numbers_list)


for aa in a:
    for i, prime in enumerate(prime_numbers_list):
        if aa % prime ==0:
            count[i] += 1
            break

if max(count)>=2:
    print('setwise coprime')
else:
    print('pairwise coprime')




### FIXED CODE ###

import sys
sys.setrecursionlimit(10 ** 7)
input = sys.stdin.readline

from math import gcd
n = int(input())
a = list( map(int, input().split()))


g = 0
for aa in a:
    g = gcd(g,aa)
if g > 1:
    print('not coprime')
    exit()

MAXN = 10**6+10

def eratosthenes3(limit):
    sieve = [i for i in range(limit+1)]
    p = 2
    while p*p <= limit:
        if sieve[p] == p:
            for q in range(2*p,limit+1,p):
                if sieve[q] == q:
                    sieve[q] = p
        p += 1

    return sieve

sieve = eratosthenes3(MAXN)

st = set()
for aa in a:
    tmp = set()
    while aa > 1:
        tmp.add(sieve[aa])
        aa //= sieve[aa]
    for p in tmp:
        if p in st:
            print('setwise coprime')
            exit()
        st.add(p)
print('pairwise coprime')
import sys
import scipy.special as ss
def combinations_count(n, r):
    return math.factorial(n) // (math.factorial(n - r) * math.factorial(r))

x,y= (int(_) for _ in input().split()) 
if (x+y)%3!=0:
    print(0)
    sys.exit()
else:
    n=(x+y)/3
    n=int(n)
    if x<n or y<n:
         print(0)
         sys.exit()
    else:
        x=x-n
        y=y-n
        ans=int(ss.perm(x+y,x))
        print(ans%1000000007)

### FIXED CODE ###

import sys
import math
from operator import mul
from functools import reduce
def combinations_count(n, r):
    return math.factorial(n) // (math.factorial(n - r) * math.factorial(r))

def cmb(n, r, mod):
    if ( r<0 or r>n ):
        return 0
    r = min(r, n-r)
    return g1[n] * g2[r] * g2[n-r] % mod

mod = 10**9+7 
N = 10**6
g1 = [1, 1] 
g2 = [1, 1] 
inverse = [0, 1] 

for i in range( 2, N + 1 ):
    g1.append( ( g1[-1] * i ) % mod )
    inverse.append( ( -inverse[mod % i] * (mod//i) ) % mod )
    g2.append( (g2[-1] * inverse[-1]) % mod )

x,y= (int(_) for _ in input().split()) 
if (x+y)%3!=0:
    print(0)
    sys.exit()
else:
    n=(x+y)/3
    n=int(n)
    if x<n or y<n:
         print(0)
         sys.exit()
    else:
        x=x-n
        y=y-n
        ans=int(cmb(x+y, x,mod))
        print(ans%1000000007)
n = int(input())
a = list(map(int,input().split()))
a.sort()
a_i = a[-1]
max = 0
b = 0
from scipy.misc import comb
for i in a[0:-2]:
    buf = comb(a_i,i)
    if max < buf:
        max = buf
        b = i
    else:
        break
print("{} {}".format(a_i, b))

### FIXED CODE ###

a,b,x = (int(i) for i in input().split())
if a <= x and x <= a + b:
    print("YES")
else:
    print("NO")
s=input()
K=int(input())

ans=[]
ans.append(s)


for i in range(len(s)-1):
 for j in range(i+1):
  cut_s=s[j:j+len(s)-i-1]
  ans.append(cut_s)
  ans=sorted(set(ans))
  if len(ans)>K:
   ans.pop()
  print(ans)
    


answer=ans[K-1]
print(answer)

### FIXED CODE ###

s=input()
K=int(input())
 
ans=[]
ans.append(s)
 
 
for i in range(len(s)):
 for j in range(len(s)-i):
  cut_s=s[i:i+j+1]
  ans.append(cut_s)
  ans=sorted(set(ans))
  if len(ans)>K:
   if cut_s==ans[K]:
     ans.pop()
     break;
   ans.pop()
 
answer=ans[K-1]
print(answer)
h, w, m = map(int, input().split())
Hs = [0] * m
Ws = [0] * m
for i in range(m):
  _h, _w = map(int, input().split())
  Hs[_h - 1] += 1
  Ws[_w - 1] += 1

### FIXED CODE ###

h, w, m = map(int, input().split())
boms = set()
Hs = [0] * h
Ws = [0] * w
for i in range(m):
  _h, _w = map(int, input().split())
  boms.add((_h - 1, _w - 1))
  Hs[_h - 1] += 1
  Ws[_w - 1] += 1
Hmax = max(Hs)
Hcount = Hs.count(Hmax)
Wmax = max(Ws)
Wcount = Ws.count(Wmax)
Hindexs = [0] * Hcount
Windexs = [0] * Wcount
hcount = 0
wcount = 0
for i in range(h):
  if Hs[i] == Hmax:
    Hindexs[hcount] = i
    hcount += 1
for i in range(w):
  if Ws[i] == Wmax:
    Windexs[wcount] = i
    wcount += 1
if m < len(Hindexs) * len(Windexs):
  print(Hmax + Wmax)
  exit()
for hindex in Hindexs:
  for windex in Windexs:
    if (hindex,windex) not in boms: 
      print(Hmax + Wmax)
      exit()
print(Hmax + Wmax -1)
l=input()
b=list()
for i in range(l)
    a=int(input())
    b.append(a)
print(sum(b)-max(b)/2)

### FIXED CODE ###

l=int(input())
b=[int(input()) for i in range(l)]
print(sum(b)-max(b)//2)
h, w = [int(n) for n in input().split()]


print('#'*(w + 2))
for i in range(h):
    ipt = input().split()
    print('#'+ipt[0]+ipt[1]+'#')
print('#'*(w + 2))

### FIXED CODE ###

h, w = [int(n) for n in input().split()]

ans=''
for i in range(h):
    ans+='#'+input()+'#'+'\n'
print('#'*(w + 2))
print(ans+'#'*(w + 2))
#include <stdio.h>
int main()
{
  int N,M;
  scanf("%d %d",&N,%M);
  if (N == M)
      printf("Yes");
  if (N != M)
      printf("No");
}


### FIXED CODE ###

N , M = map(int, input().split())
if N == M:
    print('Yes')
else:
    print('No')
import numpy as np
import itertools

H, W, K = map(int, input().split())
x = [list(input().split()) for l in range(H)]

listH = list(range(H))
Hcombi = []
for n in range(len(listH)+1):
    a = list(itertools.combinations(listH,n))
    Hcombi.extend(a)

listW = list(range(W))
Wcombi = []
for n in range(len(listW)+1):
    a = list(itertools.combinations(listW,n))
    Wcombi.extend(a)

N = 0

for h in Hcombi:
    for w in Wcombi:
        X = np.array(x)
        X[[h],:] = 'n'
        X[:,[w]] = 'n'
        count = np.sum(X == '#')
        if count == K:
            N +=1        
print(str(N))

### FIXED CODE ###

from itertools import product

h, w, k = map(int, input().split())
c = [input() for _ in range(h)]

ans = 0

for row_bit in product(range(2), repeat=h):
    for col_bit in product(range(2), repeat=w):
        cnt = 0
        for row in range(h):
            for col in range(w):
                if (c[row][col] == '#') and ((row_bit[row] == 0) and (col_bit[col] == 0)):
                    cnt += 1   
        if cnt == k:
            ans += 1
print(ans)
house = [[[0 for i in range(10)]for j in range(3)]for k in range(4)]
n = int(input())
for i in range(n):
	b,f,r,v = map(int,input().split())
	house[b][f][r] += v

for i in range(4):
	for j in range(3):
		for k in range(10):
			print(' ',end='')
			if k != 9:
				print(house[i][j][k],end='')
			else:
				print(house[i][j][k])
	if i<3
	print('####################')


### FIXED CODE ###

house = [[[0 for i in range(10)]for j in range(3)]for k in range(4)]
n = int(input())
for i in range(n):
	b,f,r,v = map(int,input().split())
	house[b-1][f-1][r-1] += v

for i in range(4):
	for j in range(3):
		for k in range(10):
			print(' ',end='')
			if k != 9:
				print(house[i][j][k],end='')
			else:
				print(house[i][j][k])
	if i<3:
		print('####################')
N, M = map(int, input().split())
O =  [0]*N
B = [[0 for i in range(N)] for j in range (N)]
a = list(map(int, input().split()))
for i in range(N):
  O[i] = a[i]
 
for j in range(M):
  o_1, o_2 = map(int, input().split())
  B[o_1-1][o_2-1] = 1
  B[o_2-1][o_1-1] = 1
 
ans = 0
for k in range(N):
  flag =1
  for l in range(N):
    if B[k][l] == 1 and O[k] <= O[l]:
      flag = 0
  if  flag ==1:
    ans += 1
print(ans)
      

### FIXED CODE ###

a = input()
if (a[1] == 'B'):
  print('ARC')
else:
  print('ABC')
a = map(int, input().split())
print(n*(n-1)//2 + m*(m-1)//2)


### FIXED CODE ###

n, m = map(int, input().split())
print(n*(n-1)//2 + m*(m-1)//2)
from collections import deque

def operation(command, arrey):
    if command[0] == 'insert':
        arrey.insert(0,command[1])
        return arrey
    elif command[0] == 'delete':
        if command[1] in arrey:
            arrey.remove(command[1])
    elif command[0] == 'deleteFirst':
        arrey.popleft()
    elif command[0] == 'deleteLast':
        arrey.pop()


n = int(input())
list = deque()

for i in range(n):
    command = input().split()
    operation(command,list)

for i in range(len(list)):
    print(list[i]) if i == len(list)-1 else print(list[i]+' ',end='')

### FIXED CODE ###

from collections import deque
import sys
 
n = int(sys.stdin.readline())
q = deque()
 
for i in range(n):
    command = sys.stdin.readline()[:-1]
    if command[0] == 'i':
        q.appendleft(command[7:])
    elif command[6] == ' ':
        try:
            q.remove(command[7:])
        except Exception as e:
            pass
    elif command[6] == 'F':
        q.popleft()
    else:
        q.pop()
 
print(' '.join(q))
from math import gcd as gcd
n=int(input())
a=sorted(map(int,input().split()))
INF=2*10**9
ans=INF
for i in range(len(a)-1):
	tmp=gcd(a[i],a[i+1])
	if tmp!=0 and tmp<ans:
		ans=tmp
print(ans)

### FIXED CODE ###

def gcd(_a, _b):
	if _a%_b==0:return _b
	else:return gcd(_b, _a%_b)

n=int(input())
a=sorted(map(int,input().split()))
INF=2*10**9
ans=INF
for i in range(len(a)-1):
	tmp=gcd(a[i],a[i+1])
	if tmp!=0 and tmp<ans:
		ans=tmp
print(ans)
print(int(input()//3))

### FIXED CODE ###

print(int(input())//3)
n = int(raw_input())
sum = 0
tmp = n

while tmp > 0:
    sum += tmp % 10
    tmp /= 10

if n % sum == 0:
    print "Yes"
else:
    print "No"


### FIXED CODE ###

n = int(input())
sum = 0
t = n

while t > 0:
  sum += t%10
  t //= 10
if n%sum == 0:
  print('Yes')
else:
  print('No')
H,N=map(int,input().split())
A=list(map(int,input().split()))
Max_A=0
for i in range(len(A)):
  Max_A=Max_A+A[i]
if Max_A>=H:
  print("YES")
else:
  print("NO")

### FIXED CODE ###

H,A=map(int,input().split())
count=0
while H>0:
  H=H-A
  count=count+1
print(count)
q = input().split()
q = [int(i) for i in q]

t = [q[0], q[1]]
a = [q[2], q[3]]

while True:
    a[0] = a[0] - t[1]
    if (a[0] <= 0):
        print("Yes")
        break

    t[0] = t[0] - a[1]
    if (t[0] <= 0):
        print("No")
        break



### FIXED CODE ###

q = input().split()
q = [int(i) for i in q]

s = q[0]
w = q[1]

if (s <= w):
    print("unsafe")
else:
    print("safe")
a , b = (int(i) for i in input().split())
if a >= b :
    print('{}'.format(a)
else b < a :
    print('{}'.format(b))
    
    

### FIXED CODE ###

a , b = (int(i) for i in input().split())
if a <= b :
    print('{}'.format(a))
else:
    print('{}'.format(a-1))
n,m=map(int,input().split())
a=[int(input()) for i in range(m)]
mod=10**9+7
dp=[0]*(n+1)
dp[0]=1
if a[0]==1:
    dp[1]=0
else:
    dp[1]=1

a=set(a)
for i in range(2,n+1):
    if i in a:
        dp[i]=0
    else:
        dp[i]=(dp[i-1]+dp[i-2])%mod
print(dp[-1])


### FIXED CODE ###

n,m=map(int,input().split())
a=[]
for i in range(m):
    a.append(int(input()))
dp=[None]*(n+1)
dp[0]=1
dp[1]=1
if 1 in a:
    dp[1]=0
for i in a:
    dp[i]=0
for i in range(2,n+1):
    if dp[i]!=0 :
        dp[i]=dp[i-1]+dp[i-2]
print(dp[-1]%(10**9+7))
import itertools

    A1,A2,A3 = map(int,input().split())
    
    vec = [A1,A2,A3]
    com = list(itertools.permutations(vec))
    
    
    all_cos = [0,0,0,0,0,0]
    for i in range(6):
        tmp_com = com[i]
        
        tmp_A1 = tmp_com[0]
        tmp_A2 = tmp_com[1]
        tmp_A3 = tmp_com[2]
        
        cos1 = 0
        cos2 = abs(tmp_A1 - tmp_A2)
        cos3 = abs(tmp_A2 - tmp_A3)
        
        all_cos[i] = cos1 + cos2 + cos3
    
    res = min(all_cos)
    print(res)



### FIXED CODE ###

import itertools

A1,A2,A3 = map(int,input().split())
    
vec = [A1,A2,A3]
com = list(itertools.permutations(vec))
    
all_cos = [0,0,0,0,0,0]
for i in range(6):
    tmp_com = com[i]
        
    tmp_A1 = tmp_com[0]
    tmp_A2 = tmp_com[1]
    tmp_A3 = tmp_com[2]
        
    cos1 = 0
    cos2 = abs(tmp_A1 - tmp_A2)
    cos3 = abs(tmp_A2 - tmp_A3)
        
    all_cos[i] = cos1 + cos2 + cos3
    
res = min(all_cos)
print(res)
def comb(n, k):
    m = 1
    if n < 2 * k:
        k = n - k
    for i in range(1, k + 1):
        m = m * (n - i + 1) / i    
    return m % 2019
L,R = map(int,input().split())
min = 999999999
lists = list(range(L,R+1))
for i in range(len(lists)):
    if min > comb(L,lists[i]) and min !=1 :
        min = comb(L,lists[i])
print(min)

### FIXED CODE ###

L,R = map(int,input().split())
# R-LはLからRまでの個数を表す
#解の最小は０であり、LからRまでに2019の倍数が存在すればよい
# R-L > 2018ならRからLに2019の倍数が出てくることになる
if R - L >= 2018:
    print(0)
else:
    ans = 2019
    #iとj=i+1でi*jmod2019の最小値を全探索
    for i in range(L,R):
        for j in range(i+1,R+1):
            ans = min(ans,i*j % 2019)
    print(ans)
n=int(input())
ans=0
for i in range(1,n+1):
  if len(i)%2==1:
    ans=ans+1
print(ans)


### FIXED CODE ###

n=int(input())
ans=0
for i in range(1,n+1):
  if len(str(i))%2==1:
    ans=ans+1
print(ans)
import numpy as np
     
    temp = input().split()
     
    s = [input().split() for i in range(int(temp[0]))]
     
    cnt = 0
     
    for i in range(int(temp[0])):
      if np.sqrt(int(s[i][0])*int(s[i][0]) + int(s[i][1])*int(s[i][1])) <= int(temp[1]):
        cnt += 1
     
    print(cnt)

### FIXED CODE ###

import numpy as np
temp = input().split()
s = [input().split() for i in range(int(temp[0]))]
cnt = 0
for i in range(int(temp[0])):
  if np.sqrt(int(s[i][0])*int(s[i][0]) + int(s[i][1])*int(s[i][1])) <= int(temp[1]):
    cnt += 1
print(cnt)
n, k =int(raw_input()), int(raw_input())
s=n*k
l=2*(n+k)
print s,l

### FIXED CODE ###

n=map(int,raw_input().split())
print n[0]*n[1],(n[0]+n[1])*2
import sys

a, b = map(int, sys.stdin.readline().split()))

if a <= 8 and b <= 8:
    print('Yay!')
else:
    print(":(")

### FIXED CODE ###

import sys

a, b = map(int, sys.stdin.readline().split())

if a <= 8 and b <= 8:
    print('Yay!')
else:
    print(":(")
#n, m, q = map(int, input().split())
#List = list(map(int, input().split()))
#req = [list(map(int, input().split())) for _ in range(q)]
#t = t[:-1]
#print(ans[j], end = "") 改行無しで出力
#[0]*n
#sort = sorted(a)[::-1] 降順
import math
x, k, d = map(int, input().split())

num = k*d

x = abs(x)

if x >= num:
    print(x - num)
else:
    j = int(x / d)
    b = x % (d*j)
    min = min(b, d - b)
    max = max(b, d - b)
    if min == d - b:
        j += 1

    if (k - j) % 2 == 0:
        print(min)
    else:
        print(max)


### FIXED CODE ###

#n, m, q = map(int, input().split())
#List = list(map(int, input().split()))
#req = [list(map(int, input().split())) for _ in range(q)]
#t = t[:-1]
#print(ans[j], end = "") 改行無しで出力
#[0]*n
#sort = sorted(a)[::-1] 降順
import math
x, k, d = map(int, input().split())

num = k*d

x = abs(x)
flag = 0

if x >= num:
    print(x - num)
else:
    if x > d:
        j = int(x / d)
    else:
        if x*2 > d:
            j = 1
            flag = 1
        else:
            j = 0

    if j == 0:
        b = x
    elif j == 1 and flag == 1:
        b = d - x
    else:
        b = x % (d*j)
    min = min(b, d - b)
    max = max(b, d - b)
    if min == d - b:
        j += 1

    if (k - j) % 2 == 0:
        print(min)
    else:
        print(max)
n1 = int(input())
for i in range(1, 10):
  if n1 % i == 0 and n1 / i < 10:
    print("Yes")
    return
print("No")

### FIXED CODE ###

import sys
n1 = int(input())
for i in range(1, 10):
  if n1 % i == 0 and n1 / i < 10:
    print("Yes")
    sys.exit()
print("No")
print('second' if all(a[i] % 2 == 0 for i in range(N)) else 'first')

### FIXED CODE ###

N = int(input())
a = [int(input()) for _ in range(N)]
print('second' if all(a[i] % 2 == 0 for i in range(N)) else 'first')