Harryxun/stf_run huggingface dataset:
from operator import itemgetter

def calc(n, A, B):
    count = 0
    for i in range(n):#scanA
        Bmin = B[i]
        swapnum = i
        
        #B[i～n-1]の最小値を探す
        for j in range(i,n):
            if Bmin > B[j]:
                Bmin = B[j]
                swapnum = j
        #最小値がA[i]より小さければ並べ変えは不可能
        if A[i] > Bmin:
            return 'No'
        
        #最小値がB[i]でなければ入れ替える。
        if swapnum != i:
            B[swapnum] = B[i]
            count += 1
        
    if count > n -2:
        return 'No'
    else:
        return 'Yes'

                
#main

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

#print(A)
#print(B)

pair = list(zip(A,B))
pair.sort(key=itemgetter(0))#sortA

A, B = zip(*pair)

ltA = list(A)
ltB = list(B)

#print(ltA)
#print(ltB)

#print(pair)

print(calc(n,ltA,ltB))


### FIXED CODE ###

n = int(input())
print((n-1)//2)
n,a,b = map(int, input().split())
if a*n >= b:
    print(b)
else:
    print(

### FIXED CODE ###

n,a,b = map(int, input().split())
if a*n >= b:
    print(b)
else:
    print(a*n)
import numpy as np
a = int(input())
b = []
sum = 0
for i in range(a):
  b[i] = int(input())
  sum += b[i]
np.reciprocal(sum)
np.reciprocal(sum)
print(sum)

### FIXED CODE ###

N = int(input())
A = list(map(int, input().split()))
sam = 0
for i in range(N):
  sam += A[i]**-1
print(sam**-1)
N, M = map(int, input().split())

c = 0
c += N(N-2)/2
c += M(M-2)/2

print(c)



### FIXED CODE ###

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

c = 0
c += (N*(N-1))/2
c += (M*(M-1))/2

print(int(c))
a = input()
print(s[0] + str(len(s) - 2) + s[-1])

### FIXED CODE ###

a = input()
print(a[0] + str(len(a) - 2) + a[-1])
n,m,k = map(int,input().split()) 
Al=list(map(int,input().split()) )
Bl=list(map(int,input().split()) )
bmax=0
A=[0]
B=[0]
for i in range(1,n+1):
    A[i] += A[i-1]+Al[i]  
for i in range(1,m+1):
    B[i] += B[i-1]+Bl[i]
    if B[i]<=k:
        bmax=i

ans=0
b=bmax
for a in range(len(A)):
    if A[a]>k:
        break
    # ans = max(ans, a+1)
    
    while A[a] + B[b] >k and b>=0:
        b -= 1
        
        
    ans = max(ans, a+b+2)
        
print(ans)


### FIXED CODE ###

n,m,k = map(int,input().split()) 
Al=list(map(int,input().split()) )
Bl=list(map(int,input().split()) )
bmax=0
A=[0]
B=[0]
for i in range(1,n+1):
    A.append(A[i-1]+Al[i-1])  
for i in range(1,m+1):
    B.append(B[i-1]+Bl[i-1])
    if B[i]<=k:
        bmax=i

ans=0
b=bmax
for a in range(len(A)):
    if A[a]>k:
        break
    # ans = max(ans, a+1)
    
    while A[a] + B[b] >k and b>=0:
        b -= 1
        
        
    ans = max(ans, a+b)
        
print(ans)
a,b,c,d,e,k = map(int, input().split())

if (e-a>k):
  print(":(")
else:
  print("Yay!")


### 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!")
S = input()
if re.findall('[a-z]+$', S) = 's'
	print( S + 'es')
	else print( S + 's')

### FIXED CODE ###

S = input()
if S[-1] == "s":
  print( S + "es" )
else: 
  print( S + "s" )
a = int(input())
b = [int(input()) for _ in range(a)]
b = sorted(b, key=lambda, x: x[0], reverse=True)
c = 1
for i in range(a):
  if i == 0:
    c += b[i] // 2
  else:
    c += b[i]
print(c)


### FIXED CODE ###

a = int(input())
b = [int(input()) for _ in range(a)]
b = sorted(b, reverse=True)
c  = 0
for i in range(a):
    if i == 0:
        c += b[i] // 2
    else:
        c += b[i]
print(c)
K = int(input())
A, B = map(int, input().split())

i = B - A

for i in range(A, B + 1):
    if i % K == 0:
        c = 1

if c == 1:
    print('OK')
else:
    print('NG')

### FIXED CODE ###

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

i = B - A
c = 0

for i in range(A, B + 1):
    if i % K == 0:
        c = 1

if c == 1:
    print('OK')
else:
    print('NG')
# -*- coding: utf-8 -*-

min_char = "abcdefghij"

def dtype_tree(tree, start, num):
    for i in range(start+1):
        if num > 0:
            tgt_tree = [i]
            new_tree = dtype_tree([], i+1, num-1)
            tgt_tree.append(new_tree)
            if tree == None:
                tree = tgt_tree
            else:
                tree.append(tgt_tree)
        else:
            tree.append([i])
    return tree

def print_tree(tree, prefix):
    new_prefix = prefix
    if len(tree) == 1:
        print(prefix + min_char[tree[0]])
    else:
        for elem in tree:
            if type(elem) != list:
                new_prefix += min_char[elem]
#                print(new_prefix)
            else:
                print_tree(elem, new_prefix)

    return


def abc_XXX(num):
    tree = dtype_tree(None, 0, num-1)
#    print(tree)
    print_tree(tree, "")
    return

###
# main
if(__name__ == '__main__'):
    # input
    n = int(input())
    
    abc_XXX(n)
    
    # output

# else:
    # do nothing


### FIXED CODE ###

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

min_char = "abcdefghij"

def dtype_tree(tree, max, num):
    for i in range(max+1):
        tgt_tree = [i]
        if num > 0:
            new_max = max
            if new_max < i+1:
                new_max = i+1
            new_tree = dtype_tree([], new_max, num-1)
            tgt_tree.append(new_tree)

        if tree == None:
            tree = tgt_tree
        else:
            tree.append(tgt_tree)
    return tree

def print_tree(tree, prefix):
    new_prefix = prefix
    if len(tree) == 1:
        print(prefix + min_char[tree[0]])
    else:
        for elem in tree:
            if type(elem) != list:
                new_prefix += min_char[elem]
#                print(new_prefix)
            else:
                print_tree(elem, new_prefix)

    return


def abc_XXX(num):
    tree = dtype_tree(None, 0, num-1)
#    print(tree)
    print_tree(tree, "")
    return

###
# main
if(__name__ == '__main__'):
    # input
    n = int(input())
    
    abc_XXX(n)
    
    # output

# else:
    # do nothing
# Ai>=Bi 出来るならそのままにする
# Ai < Bi 仕方ないので溢れたぶんを使う
# 「変更したAi」の最小値が欲しいので、使うのは余ってるやつが多い順に使ったほうがいい

n = int(input())
arr = list(map(int, input().split()))
brr = list(map(int, input().split()))

lack, lack_i = 0, []
extra, extra_i = 0, []
for i in range(n):
    if arr[i] < brr[i]:
        lack += brr[i] - arr[i]
        lack_i.append([i, brr[i] - arr[i], False])
    else:
        extra += arr[i] - brr[i]
        extra_i.append([i, arr[i] - brr[i], False])

if lack > extra:
    print(-1)
    exit()

# 大量に余っているやつから優先的に使う
extra_i = list(sorted(extra_i, key=lambda x: x[1], reverse=True))
ans = 0

l_i = 0
e_i = 0

while True:
    if l_i >= len(lack_i):
        break
    while True:
        if e_i > len(extra_i):
            print(-1)
            exit()
        if lack_i[l_i][1] <= extra_i[e_i][1]:
            extra_i[e_i][2] = True  # 一回でも使用した
            ans += 1  # 少ないやつを潰したぶん
            extra_i[e_i][1] -= lack_i[l_i][1]
            break
        else:
            extra_i[e_i][2] = True  # 一回でも使用した
            e_i += 1
            lack_i[l_i][1] -= extra_i[e_i][1]
            extra_i[e_i][1] = 0
    l_i += 1

bonus = len(list(filter(lambda x: x[2] == True, extra_i)))
print(ans + bonus)


### FIXED CODE ###

# にぶたんが失敗したので両端からしゃくとりするような感じでやってみる
# 差分でソートして大きく足りないものは大きく余ってるやつをぶつける

N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
if sum(A) < sum(B):
    print(-1)
    exit()
D = []
pre_ans = 0  # 確実に変えなくてはいけないやつ
for i in range(N):
    if A[i] != B[i]:
        D.append(A[i] - B[i])
        if A[i] < B[i]:
            pre_ans += 1
D = sorted(D)

used = 0
tmp = 0
# print(D)
l, r = 0, len(D)
while r - l > 1:
    # print("now tmp: {}".format(tmp))
    if tmp + D[l] < 0:
        # 新たに借りる
        r -= 1
        used += 1
        tmp += D[r]
    tmp += D[l]
    l += 1
print(used + pre_ans)
#INPUT
D = int(input())
c = [int(i) for i in input().split()]
s = []
for i in range(D):
    new = [int(i) for i in input().split()]
    s.append(new)

#Utilitiy
def score(ans):
    if len(ans) != D:
        print("wrong length")
        return 0
    else:
        p = 0
        last = [-1]*26
        for i in range(D):
            contest = ans[i]-1
            p += s[i][contest]
            last[contest] = i
            for j in range(26):
                p -= c[j]*(i-last[j])
        return p

def greedy(ahead=0):
    ans = []
    p = 0
    last = [-1]*26
    for i in range(D):
        decay = 0
        for j in range(26):
            decay -= c[j]*(i-last[j])
            
        max_j = -1
        max_plus = decay
        for j in range(26):
            plus = s[i][j] + c[j]*(i-last[j]) + c[j]*ahead
            if plus > max_plus:
                max_plus = plus
                max_j = j
        ans.append(max_j+1)
        last[max_j]=i
        p += max_plus + decay - c[max_j]*ahead
    return ans, p
        
#MAIN
max_points = 0
for k in range(20):
    ans_temp, points = greedy(ahead = k)
    if points > max_points:
        max_points = points
        ans = ans_temp

for i in range(D):
    print(ans[i])

### FIXED CODE ###


#INPUT
D = int(input())
c = [int(i) for i in input().split()]
s = []
for i in range(D):
    new = [int(i) for i in input().split()]
    s.append(new)

#Utilitiy
def score(ans):
    if len(ans) != D:
        print("wrong length")
        return 0
    else:
        p = 0
        last = [-1]*26
        for i in range(D):
            contest = ans[i]-1
            p += s[i][contest]
            last[contest] = i
            for j in range(26):
                p -= c[j]*(i-last[j])
        return p

def greedy():
    ans = []
    p = 0
    last = [-1]*26
    for i in range(D):
        decay = 0
        for j in range(26):
            decay -= c[j]*(i-last[j])
            
        max_j = -1
        max_plus = decay
        for j in range(26):
            plus = s[i][j] + c[j]*(i-last[j])
            if plus > max_plus:
                max_plus = plus
                max_j = j
        ans.append(max_j+1)
        last[max_j]=i
        p += max_plus + decay
    return ans, p
        
#MAIN
ans, points = greedy()


for i in range(D):
    print(ans[i])
def _comb(N,M):
    if not N:return(0)
    count=1
    for i in range(0,M):
        count*=N-i
    for i in range(1,M+1):
        count/=i
    return(int(count))

N,M=list(map(int,input().split()))
A=[int(input()) for i in range(M)]
if N-1 in A:pass
else:A.append(N+1)
if 1 in A:pre=-1
else:pre=0
count=1
for a in A:
    count*=sum([_comb(a-1-pre-i,i) for i in range((a-1)-pre)])
    pre=a+1
print(count%1000000007)


### FIXED CODE ###

N,M=map(int,input().split())
mod=10**9+7
A=set([int(input()) for i in range(M)])

data=[0 for i in range(N)]
if 1 not in A:
    data[0]=1
if N>=2:
    if 2 not in A:
        data[1]=1+data[0]


for i in range(2,N):
    if i+1 not in A:
        data[i]=data[i-1]+data[i-2]
        data[i]%=mod

#print(data)

print(data[-1])
# ？？？？？？？？？？？？？？？？？？？？？？？？？？
# ケース12と13、完全にバグとしか思えないのですが?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

# もしかして：頂点1は必ず0？

n = int(input())
a = list(map(int, input().split()))
if a[0] != 0:
    print(0)
    exit()
a = sorted(a)
d = {}
for av in a:
    if av not in d:
        d[av] = 1
    else:
        d[av] += 1
if d[0] != 1
    print(0)
    exit()
MOD = 998244353

ans = 1
for i in range(1, a[-1] + 1):
    if i not in d:
        ans = 0
        break
    ans *= pow(d[i - 1], d[i], MOD)
print(ans % MOD)

### FIXED CODE ###

# ？？？？？？？？？？？？？？？？？？？？？？？？？？
# ケース12と13、完全にバグとしか思えないのですが?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

# もしかして：頂点1は必ず0？

n = int(input())
a = list(map(int, input().split()))
if a[0] != 0:
    print(0)
    exit()
a = sorted(a)
d = {}
for av in a:
    if av not in d:
        d[av] = 1
    else:
        d[av] += 1

if a[0] != 0 or d[0] != 1 or len(set(d.keys())) != a[-1] + 1:
    print(0)
    exit()
MOD = 998244353
ans = 1
for i in range(2, a[-1] + 1):
    ans *= pow(d[i - 1], d[i], MOD)
print(ans % MOD)
#ABC131 C
import math

A, B, C, D = map(int, input().split())
def ad(X):
    XmodC = X // C
    XmodD = X // D
    CD_lcm = C * D / math.gcd(C, D)
    XmodCD = X // CD_lcm
    return X - int(XmodC + XmodD - XmodCD)
ans = int(ad(B) - ad(A - 1))
print(ans)

### FIXED CODE ###

#ABC131 C
import fractions

A, B, C, D = map(int, input().split())
def ad(X):
    XmodC = int(X // C)
    XmodD = int(X // D)
    CD_lcm = int(C * D / fractions.gcd(C, D))
    XmodCD = int(X // CD_lcm)
    return X - (XmodC + XmodD - XmodCD)
ans = ad(B) - ad(A - 1)
print(ans)
from math import ceil
N, K = map(int, input().split())
A = list(map(int, input().split()))

# にぶたん: 答えをx以下にできるか？
ok, ng = 10 ** 9 + 1, -1
while abs(ok - ng) > 1:
    x = (ok + ng) // 2
    cnt = 0

    for a in A:
        if a <= x:
            continue

        cnt += a // x
        if cnt > K:
            ng = x
            break
    else:
        ok = x

print(ok)


### FIXED CODE ###

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

# にぶたん: 答えをx以下にできるか？
ok, ng = 10 ** 9 + 1, 0
while abs(ok - ng) > 1:
    x = (ok + ng) // 2
    cnt = 0

    for a in A:
        if a <= x:
            continue

        cnt += a // x
        if cnt > K:
            ng = x
            break
    else:
        ok = x

print(ok)
# -*- coding: utf-8 -*-
# 整数の入力
a = int(input())
# あまりの計算
b = a - (a%10)*10
# 出力するテキスト
if b == 2 or b == 4 or b == 5 or b == 7 or b == 9:
  out = 'hon'
elif b == 0 or b == 1 or b == 6 or b == 8:
  out = 'pon'
elif b == 3:
  out = 'bon'
# 出力
print("{}".format(out))

### FIXED CODE ###

# -*- coding: utf-8 -*-
# 整数の入力
a = int(input())
# あまりの計算
b = a%10
# 出力するテキスト
if b == 2 or b == 4 or b == 5 or b == 7 or b == 9:
  out = 'hon'
elif b == 0 or b == 1 or b == 6 or b == 8:
  out = 'pon'
elif b == 3:
  out = 'bon'
# 出力
print("{}".format(out))
import numpy as np
A = np.asarray(input().split()).astype(np.int)
 
ans = 0
mod = 10**9 + 7
for i in range(N):
    pA = (A[i] % mod) * (A[i+1:].sum() % mod)
    ans += pA
 
print(int(ans % mod))

### FIXED CODE ###

D, T, S = map(int, input().split())

t = D / S

if t <= T:
    print('Yes')
else:
    print('No')
import sys                          
import sympy                        
                                    
n = int(sys.stdin.readline())       
                                    
def isPrime(n):                     
    if n < 2:                       
        return False                
    for i in range(2,int(n**0.5)+1):
        if n%i==0:                  
            return False            
    return True                     
                                    
def calc(n):                        
    used = set()                    
    a = 0                           
    c = True                        
    c1 = []                         
    ds = sympy.divisors(n)          
    m = max(ds)                     
    for d in sympy.divisors(n):     
        if not isPrime(d):          
            continue                
        v = d                       
        i = 1                       
        while v <= m:               
            c1.append(v)            
            i += 1                  
            v = d ** i              
    c1.sort()                       
    while c:                        
        c = False                   
        for d in c1:                
            if d in used:           
                continue            
            if n % d != 0:          
                continue            
            #print(n, d)            
            n //= d                 
            a += 1                  
            c = True                
            used.add(d)             
            break                   
    return a                        
                                    
print(calc(n))                      

### FIXED CODE ###

import sys

n = int(sys.stdin.readline())

def isPrime(n):
    if n < 2:
        return False
    for i in range(2,int(n**0.5)+1):
        if n%i==0:
            return False
    return True

def divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]

def calc(n):
    used = set()
    a = 0
    c = True
    c1 = []
    ds = divisors(n)
    m = max(ds)
    for d in ds:
        if not isPrime(d):
            continue
        v = d
        i = 1
        while v <= m:
            c1.append(v)
            i += 1
            v = d ** i
    c1.sort()
    while c:
        c = False
        for d in c1:
            if d in used:
                continue
            if n % d != 0:
                continue
            #print(n, d)
            n //= d
            a += 1
            c = True
            used.add(d)
            break
    return a

print(calc(n))
print("Hello World" if print() == "1" else (int(input()) + int(input())))

### FIXED CODE ###

print("Hello World" if input() == "1" else (int(input()) + int(input())))
a,b = map(int,input().split())
res = a*b
print(int(res))

### FIXED CODE ###

from decimal import Decimal
a,b = map(Decimal,input().split())
print(int(a*b))
# https://atcoder.jp/contests/abc148/tasks/abc148_c
import math


def main():
    (a, b) = [int(i) for i in input().split(" ")]
    print(int(a * b / math.gcd(a, b)))


if __name__ == '__main__':
    main()


### FIXED CODE ###

# https://atcoder.jp/contests/abc148/tasks/abc148_c
import fractions
# math.gcdは3.5からなのでAtCoderで使えない
# import math


def main():
    (a, b) = [int(i) for i in input().split(" ")]
    print(int(a * b / fractions.gcd(a, b)))


if __name__ == '__main__':
    main()
n = int(input())
a = input().split()
b = a[:]

while flag:
    flag = 0
    for i in range(n-1):
        if a[i][1] > a[i+1][1]:
            a[i][1], a[i+1][1] = a[i+1][1], a[i][1]
            flag = 1
print(*a)
print("Stable")

for i in range(n-1):
    min_j = i
    for j in range(i,n):
        if b[j][1] < b[min_j][1]:
            min_j = j
    b[i][1], b[min_j][1] = b[min_j][1], b[i][1]
print(*b)
if a == b:
    print("Stable")
else:
    print("Not stable")

### FIXED CODE ###

n = int(input())
a = input().split()
b = a[:]
flag = 1
while flag:
    flag = 0
    for i in range(n-1):
        if a[i][1] > a[i+1][1]:
            a[i], a[i+1] = a[i+1], a[i]
            flag = 1
print(*a)
print("Stable")

for i in range(n-1):
    min_j = i
    for j in range(i,n):
        if b[j][1] < b[min_j][1]:
            min_j = j
    b[i], b[min_j] = b[min_j], b[i]
print(*b)
if a == b:
    print("Stable")
else:
    print("Not stable")
from itertools import permutations
n = int(input())
P = list(map(int,input().split()))
Q = list(map(int,input().split()))

A = [i for i in range(1,n+1)]

for i,per in enumerate(list(permutations(A))):
  if per == P:
    x = i
  if per == Q:
    y = i
  
print(abs(x-y))


### FIXED CODE ###

from itertools import permutations
n = int(input())
p = tuple(map(int,input().split()))
q = tuple(map(int,input().split()))

a = [i+1 for i in range(n)]
for i,per in enumerate(list(permutations(a))):
    if per == p:
        x = i
    if per == q:
        y = i
print(abs(x-y))
n=int(input())
arr=[]
from collections import Counter
c=Counter([])
for _ in range n:
  s=input()
  z=[item for item in s]
  z.sort()
  z=tuple(z)
  c[z]+=1
ans=0
for item in c.values():
  ans+=(item*(item-1))//2
print (ans)

### FIXED CODE ###

n=int(input())
arr=[]
from collections import Counter
c=Counter([])
for _ in range (n):
    s=input()
    z=[item for item in s]
    z.sort()
    z=tuple(z)
    c[z]+=1
ans=0
for item in c.values():
    ans+=(item*(item-1))//2
print (ans)
a = input()
return a * a * a

### FIXED CODE ###

a = input()
print a * a * a
height,width = map(int, input().split())
map_list = []
for i in range(height):
    map_list.append(list(input()))
    map_list[i].append('0')
map_list.append(['0'] * width)

for h in range(height):
    for w in range(width):
        if map_list[h][w] == '#':
            if '#' in [map_list[h-1][w], map_list[h+1][w], map_list[h][w-1], map_list[h][w+1]]:

            else:
                print("No")
                exit()

print("Yes")


### FIXED CODE ###

height,width = map(int, input().split())
map_list = []
flag = False
for i in range(height):
    map_list.append(list(input()))
    map_list[i].append('0')
map_list.append(['0'] * width)
#print(map_list)

for h in range(height):
    for w in range(width):
        if map_list[h][w] == '#':
            #print("a")
            if '#' in [map_list[h-1][w], map_list[h+1][w], map_list[h][w-1], map_list[h][w+1]]:
                flag = True
                #print("b")
                if flag == True:
                    flag = False
                    #print("c")
            else:
                print("No")
                exit()

print("Yes")
import math
ans = math.inf
n = int(input())
a = list(range(1,math.ceil(math.sqrt(n))+1))
for i in a:
    s = n/i
    if s==int(s):
        ans = min(i+s-2,ans)
print(int(ans))

### FIXED CODE ###

import math
import sys
ans = 9223372036854775807
n = int(input())
a = list(range(1,math.ceil(math.sqrt(n))+1))
for i in a:
    s = n/i
    if s==int(s):
        ans = min(i+s-2,ans)
print(int(ans))
a, b, c = map(int, input().split())
if a * b * c = 175:
  print("YES")
else:
  print("NO")

### FIXED CODE ###

a, b, c = map(int, input().split())
if a * b * c == 175:
  print("YES")
else:
  print("NO")
def main():
	N, M = map(int, input().split())
    d = dict()
    for _ in range(M):
        a, b = map(int, input().split())
        d[a] = d.get(a, 0) + 1
        d[b] = d.get(b, 0) + 1

    for a in range(1, N+1):
        if a in d:
            print(d[a])
        else:
            print(0)

if __name__ == '__main__':
    main()

### FIXED CODE ###

def main():
    N, M = map(int, input().split())
    d = dict()
    for _ in range(M):
        a, b = map(int, input().split())
        d[a] = d.get(a, 0) + 1
        d[b] = d.get(b, 0) + 1

    for a in range(1, N+1):
        if a in d:
            print(d[a])
        else:
            print(0)

if __name__ == '__main__':
    main()
l=list(input().split() for i in range(3))
print(l[0][0]+l[1][1]+l[2][2])

### FIXED CODE ###

l=list(input() for i in range(3))
print(l[0][0]+l[1][1]+l[2][2])
S = list(input())
i, j = 0, len(S) - 1
ans = 0

while i != j:
    if S[i] == S[j]:
        i += 1
        j -= 1

    elif S[i] == 'x':
        i += 1
        ans += 1

    elif S[j] == 'x':
        j -= 1
        ans += 1

    else:
        print('-1')
        break

else:
    print(ans)


### FIXED CODE ###

S = input()
S2 = "".join([s for s in S if s != "x"])

if S2 != S2[::-1]:
    print(-1)
    exit()

A = []
cnt = 0
for s in S:
    if s != "x":
        A.append(cnt)
        cnt = 0
    else:
        cnt += 1
A.append(cnt)

ans = 0
for i in range(len(A) // 2):
    ans += abs(A[i] - A[-i-1])
print(ans)
a,b = map(int,input().split())
print((a+b))//2 if (a+b) % 2 == 0 else (a+b)//2+1))

### FIXED CODE ###

num,numsecond = map(int,input().split())
number = num + numsecond
answer = number // 2
if number / 2 - number //2 > 0:
    answer += 1

print(answer)
import copy
import numpy as np
N=int(input())
a=list(map(int,input().split()))

b=copy.deepcopy(a)
a.append(0)
b.insert(0,0)

a=np.array(a)
b=np.array(b)
ab=np.abs(a-b)
sumab=np.sum(ab)
temp=ab

np.insert(a,0,0)
for i in range(N):
    ab=temp
    ans=sumab-np.sum(ab[i:i+1])
    ans+=a[i+2]-a[i]
    print(ans)


    print(ans)




### FIXED CODE ###

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

A.insert(0,0)
A.append(0)
A=np.array(A)
S=np.sum(np.abs(np.diff(A)))

for i in range(1,N+1):
    S_i=S+abs(A[i-1]-A[i+1])-(abs(A[i-1]-A[i])+abs(A[i]-A[i+1]))
    print(S_i)