Harryxun/stf_run huggingface dataset:
import collections
import sys
l = int(input())
inputs = [int(j) for j in input().split(' ')]
cs = collections.Counter(inputs)
if l % 2 == 0:
  for v,c in cs.items():
    if v % 2 == 0 or c != 2:
      print(0)
      sys.exit()
else:
  for v,c in cs.items():
    if v % 2 != 0 or (c != 2 and v != 0):
      print(0)
      sys.exit()
print(2**int(l/2)%(1e9+7))


### FIXED CODE ###

import collections
import sys
l = int(input())
inputs = [int(j) for j in input().split(' ')]
cs = collections.Counter(inputs)
if l % 2 == 0:
  for v,c in cs.items():
    if v % 2 == 0 or c != 2:
      print(0)
      sys.exit()
else:
  for v,c in cs.items():
    if v % 2 != 0 or (c != 2 and v != 0):
      print(0)
      sys.exit()
print(2**int(l/2)%(10**9+7))
colors = []

for i in range(3):
  colors.append(int(input()))
unique_colors = list(set(colors))
print(len(unique_colors))

### FIXED CODE ###

print(len(set(input().split())))
N=int(input())
a_n=[]
a2_n=[]
a_n = input().split(" ")
count = 0

for i in range(N):
    if int(a_n[i])/400 < 8:
         a2_n.append(int(a_n[i])/400)
    else:
        count += 1
if len(a2_n) == 0:
    num = 0
    n_min = 1
else:
    n_min = len(set(a2_n))
n_max = num+count

print(str(n_min)+" "+str(n_max))

### FIXED CODE ###

N=int(input())
a_n=[]
a2_n=[]
a_n = input().split(" ")
count = 0

for i in range(N):
    if int(a_n[i])/400 < 8:
         a2_n.append(int(a_n[i])//400)
    else:
        count += 1

n_min = len(set(a2_n))
n_max = n_min+count

print(max(1, n_min),n_max)
K = int(input())
S = input()
if len(S) <= K:
    print(S)
else:
    for i in range(K):
        print(S[i],end="")
    print("..."3)

### FIXED CODE ###

K = int(input())
S = input()
if len(S) <= K:
    print(S)
else:
    for i in range(K):
        print(S[i],end="")
    print("...")
a = input()
b = input()
print(int(a)*int(b))

### FIXED CODE ###

a,b = map(int,input().split())
print(a*b,2*(a+b))
if __name__ == '__main__':
	l = input().split()

	for i in range(l):
		l[i] = int(l[i])
	W, H, x, y, r = (l[i] for i in range(5))

	if r <= x and x <= W - r and r <= y and y <= H - r:
		print("Yes")
	else:
		print("No")



### FIXED CODE ###

if __name__ == '__main__':
	l = input().split()

	for i in range(len(l)):
		l[i] = int(l[i])
	W, H, x, y, r = l[0], l[1], l[2], l[3], l[4]

	if x >= r and y >= r:
		if x <= W - r and y <= H - r:
			print("Yes")
		else:
			print("No")
	else:
		print("No")
red_points.sort()
blue_points.sort()
count = 0
distance = 9999
for blue_point in blue_points:
    for red_point in red_points:
        if blue_point[0] > red_point[0]:
            if blue_point[1] > red_point[1]:
                if blue_point[1] - red_point[1] < distance:
                    distance = blue_point[1] - red_point[1]
                    tmp = red_point
        else:
            distance = 9999
            break
    print(tmp, blue_point)
    print(red_points)
    if tmp in red_points:
        red_points.remove(tmp)
        count = count + 1
    distance = 9999
print(count)

### FIXED CODE ###

N = int(input())

red_points = [[int(i) for i in input().split()] for j in range(N)]

blue_points = [[int(i) for i in input().split()] for j in range(N)]

red_points.sort()
blue_points.sort()
count = 0
distance = 9999
for blue_point in blue_points:
    tmp = [i for i in red_points if blue_point[0] > i[0] and blue_point[1] > i[1]]
    if tmp:
        for j in tmp:
            if (blue_point[1] - j[1]) < distance:
                distance = blue_point[1] - j[1]
                min_red = j
        count = count + 1
        red_points.remove(min_red)
        distance = 9999

print(count)
N, M = map(int,input().split())
answer = [0]*M
ae = 0

for i in range(M):
  s,c = map(int,input().split())
  if answer[-s] == 0:
    answer[-s] = c
  elif answer[-s] != 0 and answer[-s] != c:
    print(-1)
    ae = 1
    break
if ae == 0 and answer[-M] == 0:
  print(-1)
  ae = 1
elif ae == 0:
  for i in range(M):
    print(answer[-(i+1)],end='')

### FIXED CODE ###

N, M = map(int,input().split())
answer = [-1]*N
ae = 0
  

for i in range(M):
  s,c = map(int,input().split())
  if answer[-s] == -1:
    answer[-s] = c
  elif answer[-s] != -1 and answer[-s] != c:
    print(-1)
    ae = 1
    break
for i in range(N):
  if answer[i] == -1:
    if i == N-1 and N > 1:
      answer[i] = 1
    else:
      answer[i] = 0
if ae == 0 and answer[N-1] == 0 and N != 1:
  print(-1)
  ae = 1
elif ae == 0:
  for i in range(N):
    print(answer[-(i+1)],end='')
import numpy as np
def eratosthenes(n):
    is_prime = np.ones((n+1,), dtype=bool)
    is_prime[:2] = False
    for i in range(2,n+1):
        if is_prime[i]:
            is_prime[i*2::i]=False
    return np.arange(n+1)[is_prime]
Ps = eratosthenes(1000000)
def divisor(n):
    for p in Ps:
        if p*p>n:return -1
        if n%p==0:return p
def prime_division(n):
    d={}
    while n>1:
        p=divisor(n)
        if p==-1:d[n]=d.get(n,0)+1;break
        else:d[p]=d.get(p,0)+1;n//=p
    return d

def z(n,k,v):
    if len(k)==1:
        return [n*k[0]**i for i in range(v[0]+1)]
    else:
        r=[]
        for i in range(v[0]+1):
             r+=z(n*k[0]**i,k[1:],v[1:])
        return r
def y(n):
    pd=prime_division(n)
    KV=[[k,v] for k,v in pd.items()]
    K=[k for k,v in KV]; V=[v for k,v in KV]
    return z(1,K,V)

N=int(input())
r=0
#print(y(N))
for yakusu in y(N):
    if yakusu>N//yakusu and yakusu>1:
        r+=yakusu-1
print(r)

### FIXED CODE ###

import numpy as np
def eratosthenes(n):
    is_prime = np.ones((n+1,), dtype=bool)
    is_prime[:2] = False
    for i in range(2,n+1):
        if is_prime[i]:
            is_prime[i*2::i]=False
    return np.arange(n+1)[is_prime]
Ps = eratosthenes(1000007)
def divisor(n):
    for p in Ps:
        if p*p>n:return -1
        if n%p==0:return p
def prime_division(n):
    d={}
    while n>1:
        p=divisor(n)
        if p==-1:d[n]=d.get(n,0)+1;break
        else:d[p]=d.get(p,0)+1;n//=p
    return d

def z(n,k,v):
    if len(k)==1:
        return [n*k[0]**i for i in range(v[0]+1)]
    else:
        r=[]
        for i in range(v[0]+1):
             r+=z(n*k[0]**i,k[1:],v[1:])
        return r
def y(n):
    pd=prime_division(n)
    KV=[[k,v] for k,v in pd.items()]
    K=[k for k,v in KV]; V=[v for k,v in KV]
    return z(1,K,V)

N=int(input())
if N==1:print(0);exit()
r=0
#print(y(N))
for yk in y(N):
    if yk>1 and N//(yk-1) == N%(yk-1):
        r+=yk-1
print(r)
S = input()
if S = 'ABC':
  print('ARC')
else:
  print('ABC')

### FIXED CODE ###

S = input()
if S == 'ABC':
  print('ARC')
else:
  print('ABC')
n = int(input())
ss = [[int(i) for i in input().split()] for i in range(n)]

flg = True


def get_unique_list(seq):
    seen = []
    return [x for x in seq if x not in seen and not seen.append(x)]


# print(f'ss: {ss}')
for s in ss:
    x = s[0]
    y = s[1]
    h = s[2]
    if x == y == 0:
        print(x, y, h)
        flg = False

ans = []
if flg:
    for i in range(len(ss)-1):

        temp = [] if i == 0 else get_unique_list(ans)
        ans = []

        x1 = ss[i][0]
        y1 = ss[i][1]
        h1 = ss[i][2]
        x2 = ss[i+1][0]
        y2 = ss[i+1][1]
        h2 = ss[i+1][2]

        for a in range(100):
            for b in range(100):
                left = h1 + abs(x1-a) + abs(y1 - b)
                right = h2 + abs(x2-a) + abs(y2 - b)
                if left == right and left > 0 and right > 0:
                    if i == 0:  # 1回目のループ
                        ans.append([a, b])
                    elif [a, b] in temp:  # 2回目移行
                        ans.append([a, b])

    h = ss[0][2] + abs(ss[0][0] - ans[0][0]) + abs(ss[0][1] - ans[0][1])
    print(ans[0][0], ans[0][1], h)


### FIXED CODE ###

n = int(input())
ss = [[int(i) for i in input().split()] for i in range(n)]

ss = sorted(ss, key=lambda x: x[2], reverse=True)


cx, cy, ch = ss[0]
if len(ss) == 1:
    print(cx, cy, ch)
else:
    for a in range(101):
        for b in range(101):
            H = ch + abs(cx-a) + abs(cy - b)
            for x, y, h in ss[1:]:
                if h != max(H - abs(x-a) - abs(y - b), 0):
                    break
            else:
                print(a, b, H)
                flg = True
from copy import deepcopy as dc
#n,x=map(int,input().split())
x=int(input()) #
a=list(map(int,input().split()))

n=len(a) #
a=[[i,i,0] for i in a]
aa=dc(a)
b=[]

m=0
while(b!=a):
    b=dc(a)
    for _ in range(2):
        for i in range(n):
            j=i-1
            if j==-1:
                j=n-1
            if a[i][1]!=a[j][1]:
                if aa[i][0]>=a[j][1]+x or (aa[i][0]>=a[j][1] and a[j][2]<m):
                    a[i][0]=a[j][1]+x
                    a[i][1]=a[j][1]
                    a[i][2]=a[j][2]+1
    for i in a:
        m=max(i[2],m)
        
s=0
s+=m*x
for i in a:
    s+=i[1]
print(s)
#print(a)

### FIXED CODE ###

n,x=map(int,input().split())
a=list(map(int,input().split()))
b=[[None for _ in [0]*n] for _ in [0]*n]

for i in range(n):
	m=a[i]
	for j in range(n):
		k=i-j
		if k<0:
			k+=n
		m=min(m,a[k])
		b[j][i]=m

m=10**15
for i,j in enumerate(b):
	m=min(m,sum(j)+x*i)
print(m)
#Can you get AC?
S = input()
p = 0
for i in range(n-1):
    if S[i:i+2] == "AC":
        print("Yes")
        p = p + 1
        break
    else:
        continue
if p == 0:
    print("No")

### FIXED CODE ###

#Can you get AC?
S = input()
n = len(S)
p = 0
for i in range(n-1):
    if S[i:i+2] == "AC":
        print("Yes")
        p = p + 1
        break
    else:
        continue
if p == 0:
    print("No")
N = int(input())
W = list(map(int, input().split())))
Left = 0
Right = sum(W)
ans = Right

for val in W:
    Left += val
    Right -= val
    ans = min(ans, abs(Right - Left))
print(ans)

### FIXED CODE ###

N = int(input())
W = list(map(int, input().split()))
Left = 0
Right = sum(W)
ans = Right

for val in W:
    Left += val
    Right -= val
    ans = min(ans, abs(Right - Left))
print(ans)
N=int(input())
a=[0]*N
for i in range(N):
    a[i]=int(input().split())

b=[0]*N
b[0]=a[0]
for i in range(1,N):
    b[i]=b[i-1]+a[i]

x=[0]*N
y=[0]*N
z=[0]*N
for j in range(N):
    x[j]=b[j]
    y[j]=b[-1]-b[j]
    z[j]=abs(x[j]-y[j])

print(min(z[:-1]))

### FIXED CODE ###

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

b=[0]*N
b[0]=a[0]
for i in range(1,N):
    b[i]=b[i-1]+a[i]

x=[0]*N
y=[0]*N
z=[0]*N
for j in range(N):
    x[j]=b[j]
    y[j]=b[-1]-b[j]
    z[j]=abs(x[j]-y[j])

print(min(z[:-1]))
import itertools
na = lambda: list(map(int, input().split()))

n, m = na()
t = [[0] * 10 for _ in range(10)]
for _ in range(m):
    a, b = na()
    a -= 1
    b -= 1
    t[a][b] = t[b][a] = 1

ans = 0
for l in itertools.permutations(range(m)):
    if l[0]: continue
    flag = 1
    for i in range(1, n):
        if t[l[i]][l[i-1]] == 0:
            flag = 0
    if flag:
        ans += 1

print(ans)

### FIXED CODE ###

import itertools
na = lambda: list(map(int, input().split()))

n, m = na()
t = [[0] * 10 for _ in range(10)]
for _ in range(m):
    a, b = na()
    a -= 1
    b -= 1
    t[a][b] = t[b][a] = 1

ans = 0
for l in itertools.permutations(range(n)):
    if l[0]: continue
    flag = 1
    for i in range(1, n):
        if t[l[i]][l[i-1]] == 0:
            flag = 0
            break
    if flag:
        ans += 1

print(ans)
r=int(input())
p=3.14159265
print(p*r*r 2*p*r)


### FIXED CODE ###

from math import pi
r = float(input())
a = pi*r*r
b = 2*pi*r
print(a,b)
import fractions import gcd
s=int(input())
t=list(map(int, input().split()))
ans=t[0]
for i in t:
  ans=(ans*i)//gcd(ans,i)
mod=10**9+7
ans%=mod
a=0
for j in t:
  a+=ans//j
print(int(a)%mod)

### FIXED CODE ###

from fractions import gcd
s=int(input())
t=list(map(int, input().split()))
ans=t[0]
for i in t:
  ans=(ans*i)//gcd(ans,i)
mod=10**9+7
a=0
for j in t:
  a+=ans//j
print(int(a)%mod)
w = input()
m = Map()
for t in w:
    m[t] = m.get(t, 0) + 1

for c, cnt in m:
    if cnt % 2 == 1:
        print("No")
        exit()

print("Yes")

### FIXED CODE ###

#!/usr/bin/env python
#coding:utf-8

def input_strs():
    return input().split(" ")

def input_nums():
    return [int(i) for i in input_strs()]


w = input()
ok = True

for c in w:
    p = 0
    for k in w:
        if c == k:
            p += 1
    ok = ok and (p % 2 == 0)

if ok:
    print("Yes")
else:
    print("No")
import fraction

d = [int(x) for x in input().split()]
print(d[1] - d[0] + 1 - (int(d[1] / d[2]) - int((d[0] - 1) / d[2]) + int(d[1] / d[3]) - int((d[0] - 1) / d[3]) - int(d[1] / (d[2] * d[3] / fraction.gcd(d[2], d[3]))) - int((d[0] - 1) / (d[2] * d[3]/ fraction.gcd(d[2], d[3])))))


### FIXED CODE ###

import fractions

d = [int(x) for x in input().split()]
lcm = int(d[2] * d[3] // fractions.gcd(d[2], d[3]))
b = d[1] - int(d[1] // d[2]) - int(d[1] // d[3]) + int(d[1] // lcm)
a_1 = d[0] - 1
a = a_1 - int(a_1 // d[2]) - int(a_1 // d[3]) + int(a_1 // lcm)
print(b - a)
A, B, AB, X, Y = map(int, input().split())
max_price = A * X + B * Y
flag = 1
mid_price = min((A + B) // 2, AB)
if A > mid_price and B > mid_price:
    min_sheet = max(X, Y)
elif A > mid_price:
    min_sheet = X
elif B > mid_price:
    min_sheet = Y

price = max_price + 1

while flag:
    flag = 0
    if A >= mid_price and B >= mid_price:
        price = min_sheet * AB * 2
        X -= min_sheet
        Y -= min_sheet
    if X < 1 and Y < 1:
        break
    elif X > 0:
        price += X * A
        if Y > 0:
            price += Y * B
    elif Y > 0:
        price += Y * B
        if X > 0:
            price += X * A

print(min(max_price, price))


### FIXED CODE ###

A, B, AB, X, Y = map(int,input().split())
min_sheet = min(X,Y)

if A + B >= AB * 2:
    min_price = min(AB * 2 * min_sheet + A * (X - min_sheet) + B * (Y - min_sheet), AB * 2 * max(X,Y))
else:
    min_price = A * X + B * Y
    
print(min_price)
A,B,C,D,E,F = map(int,input().split())
W = []
S = []

# 100A,100B の水
for a in range(1 + F // 100):
    for b in range(1 + F // 100):
        water = 100 * (a * A + b * B)
        if 0 < water <= F:
            W.append(water)

# c,d の砂糖
for c in range(1 + F // C):
    for d in range(1 + F // D):
        sugar = c * C + d * D
        if 0 < sugar <= F:
            S.append(sugar)

W = list(set(W))
S = list(set(S))

x = 0
for w in W:
    for s in S:
        if w + s <= F:
            sol = 100 * s / w
            if x < sol <= E:
                x = sol
                X, Y = w + s, s

print(X,Y)


### FIXED CODE ###

A,B,C,D,E,F = map(int,input().split())
W = []
S = []

# 100A,100B の水
for a in range(1 + F // 100):
    for b in range(1 + F // 100):
        water = 100 * (a * A + b * B)
        if 0 < water <= F:
            W.append(water)

# c,d の砂糖
for c in range(1 + F // C):
    for d in range(1 + F // D):
        sugar = c * C + d * D
        if sugar <= F:
            S.append(sugar)

W = list(set(W))
S = list(set(S))

x = -1
for w in W:
    for s in S:
        if w + s <= F:
            sol = 100 * s / w
            if x < sol <= E:
                x = sol
                X, Y = w + s, s

print(X,Y)
N = int(input())
li = ['']
so = 0
for _ in range(9):
  l = len(li)
  for i in range(so, l):
    li.append(li[i] + '3')
    li.append(li[i] + '5')
    li.append(li[i] + '7')
  so = l
cnt = 0
for x in li:
  if int(x) <= N and '3' in x and '5' in x and '7' in x:
    cnt += 1
print(cnt)

### FIXED CODE ###

N = int(input())
li = ['']
so = 0
for _ in range(9):
  l = len(li)
  for i in range(so, l):
    li.append(li[i] + '3')
    li.append(li[i] + '5')
    li.append(li[i] + '7')
  so = l
cnt = 0
for x in li:
  if '3' in x and '5' in x and '7' in x and int(x) <= N:
    cnt += 1
print(cnt)
n, k = map(int, input().split())
al = list(map(int, input().split()))

import math
keta = math.log(k,2)
keta_i = int(keta)+2

dp = [n]*(keta_i)

for i in range(n):
    i_bit = bin(al[i])[2:]
    lenb = len(i_bit)
    for j in range(lenb-1,-1,-1):
        dp[lenb-1-j] -= int(i_bit[j])

temp = k
res = 0
m = n//2

for i in range(keta_i-1,-1,-1):
    if dp[i] > m and 2**i <= k:
        temp -= 2**i
        res += (2**i)*(dp[i]) 
    else:
        res += (2**i)*(n-dp[i])

print(res)

### FIXED CODE ###

n, k = map(int, input().split())
al = list(map(int, input().split()))

dp = [n]*41

for i in range(n):
    i_bit = bin(al[i])[2:]
    lenb = len(i_bit)
    for j in range(lenb-1,-1,-1):
        dp[lenb-1-j] -= int(i_bit[j])

temp = k
res = 0
m = n//2

for i in range(40,-1,-1):
    if dp[i] > m and 2**i <= temp:
        temp -= 2**i
        res += (2**i)*(dp[i]) 
    else:
        res += (2**i)*(n-dp[i])

print(res)
import sys

rr = lambda: sys.stdin.readline().rstrip()

s = rr()
cnt = 0
for i in range(len(s) - 1):
  si = s[i]
  si1 = s[i+1]
  if si & si1:
    continue
  else:
    s[i+1] = si
    cnt += 1
print(cnt)




### FIXED CODE ###

import sys

rr = lambda: sys.stdin.readline().rstrip()

s = list(rr())
cnt = 0
for i in range(len(s)-1):
  si = s[i]
  si1 = s[i+1]
  if si == si1:
    if si == '0':
      s[i+1] = '1'
    else:
      s[i+1] = '0'
    cnt += 1
print(cnt)
import sys
input = lambda : sys.stdin.readline().rstrip()

s = input()
n = len(s)
k = int(input())
ans = []
used = set()
"""
from collections import defaultdict
d = defaultdict(list)
for i in range(n):
    d[s[i]].append(i)
""" 
for i in range(n):
    start = list(s[i])
    if s[i] not in used:
        ans.append(s[i])
        used.add(s[i])
    for j in range(i + 1, i + k):
        start.append(s[j])
        temp = "".join(start)
        if temp not in used:
            ans.append(temp)
            used.add(temp)
ans.sort()
print(ans[k - 1])


### FIXED CODE ###

import sys
input = lambda : sys.stdin.readline().rstrip()

s = input()
n = len(s)
k = int(input())
ans = []
used = set()
"""
from collections import defaultdict
d = defaultdict(list)
for i in range(n):
    d[s[i]].append(i)
""" 
for i in range(n):
    start = list(s[i])
    if s[i] not in used:
        ans.append(s[i])
        used.add(s[i])
    for j in range(i + 1, min(i + k, n)):
        start.append(s[j])
        temp = "".join(start)
        if temp not in used:
            ans.append(temp)
            used.add(temp)
ans.sort()
print(ans[k - 1])
N,M=map(int,input().split())
AB=sorted([list(map(int,input().split())) for i in range(N)],key=lambda x: (-x[1],x[0]))
r=0
on=[-1]*M
def put(i):
    r=0
    if i<0:
        return -1
    if on[i]<0:
        if i==0:
            if on[i]==-1:
                on[i]=-2
            else:
                r=-1
        elif on[i-1]==-1:
            on[i]=i-1
        else:
            on[i]=on[i-1]
    else:
        r=put(on[i])
    return r
for a,b in AB:
    x=put(M-a)
    if x!=-1:
        r+=b
print(r)

### FIXED CODE ###

N,M=map(int,input().split())
AB=[list(map(int,input().split())) for i in range(N)]
r=0
from heapq import heappop,heappush
q=[]
l=[[] for i in range(10**5)]
for a,b in AB:
    l[a-1].append(b)
for i in range(M):
    for e in l[i]:
        heappush(q,-e)
    if len(q)>0:
        r+=-heappop(q)
print(r)
r,D,x=map(int,input().split())

i=1
a=r*x-D
while i<=10:
	print(a)
    a=r*a-D
	i+=1

### FIXED CODE ###

r,D,x=map(int,input().split())

i=1
a=r*x-D

while i<=10:
	print(a)
	a=r*a-D
	i+=1
def solve(string):
    base = [2**i for i in range(40)][::-1]
    a, b = map(int, string.split())
    bin_a = f"{a:040b}"
    bin_b = f"{b:040b}"
    aa = [-1 if _a == "0" else int(bin_a[i + 1:] or "0", 2) for i, _a in enumerate(bin_a)]
    bb = [-1 if _b == "0" else int(bin_b[i + 1:] or "0", 2) for i, _b in enumerate(bin_b)]
    index = 0
    while True:
        if bb[index] != -1:
            break
        index += 1
    ans = []
    while index < 40:
        if aa[index] == bb[index] == -1:
            ans.append("0")
        elif aa[index] == -1:
            ans.append(str((bb[index] + 1) % 2))
        elif bb[index] == -1:
            ans.append(str(aa[index] % 2))
        else:
            ans.append(str((bb[index] + 1 - aa[index]) % 2))
        index += 1
    ans[-1] = str((b - a) // 2 % 2) if a % 2 == b % 2 == 0 else str(((b - a) // 2 + 1) % 2)
    return str(int("".join(ans), 2))


if __name__ == '__main__':
    print(solve(input()))


### FIXED CODE ###

def solve(string):
    a, b = map(int, string.split())
    if b == 0:
        return "0"
    bin_a = "{:040b}".format(a)
    bin_b = "{:040b}".format(b)
    aa = [-1 if _a == "0" else int(bin_a[i + 1:] or "0", 2) for i, _a in enumerate(bin_a)]
    bb = [-1 if _b == "0" else int(bin_b[i + 1:] or "0", 2) for i, _b in enumerate(bin_b)]
    index = 0
    while True:
        if bb[index] != -1:
            break
        index += 1
    ans = []
    while index < 40:
        if aa[index] == bb[index] == -1:
            ans.append("0")
        elif aa[index] == -1:
            ans.append(str((bb[index] + 1) % 2))
        elif bb[index] == -1:
            ans.append(str(aa[index] % 2))
        else:
            ans.append(str((bb[index] + 1 - aa[index]) % 2))
        index += 1
    ans[-1] = str((b - a) // 2 % 2) if a % 2 == b % 2 == 0 else str(((b - a) // 2 + 1) % 2)
    return str(int("".join(ans), 2))


if __name__ == '__main__':
    print(solve(input()))
def solution():
    k = int(input())
    s = int(input())
    if len(s) > k:
        return s[:k] + '...'
    else:
        return s

print(solution())

### FIXED CODE ###

def solution():
    k = int(input())
    s = str(input())
    if len(s) > k:
        return s[:k] + '...'
    else:
        return s

print(solution())
a,b,c=map(int,input().split())
if a==5 and b==7 and c==5:
  print(YES)
elif a==5 and b==5 and c==7:
  print(YES)
elif a==7 and b==5 and c==5:
  print(YES)
else:
  print(NO) 

### FIXED CODE ###

a,b,c=map(int,input().split())
if a==5 and b==7 and c==5:
  print('YES')
elif a==5 and b==5 and c==7:
  print('YES')
elif a==7 and b==5 and c==5:
  print('YES')
else:
  print('NO')
N = input()
if (N = N[::-1]):
    print('Yes')
else:
    print('No')


### FIXED CODE ###

N = input()
if (N == N[::-1]):
    print('Yes')
else:
    print('No')
s = list(input())

if len(list(set(s)):
       print('Yes')
else:
       print('No')

### FIXED CODE ###

s = list(input())

if len(list(set(s))) != 1:
  print('Yes')
else:
  print('No')
import math

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

def func(n, x, y):
    lcm = x * y // math.gcd(x, y)
    return n - (n // x + n // y - n // lcm)

print(func(b, c, d) - func(a - 1, c, d))


### FIXED CODE ###

import fractions

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

def func(n, x, y):
    lcm = x * y // fractions.gcd(x, y)
    return n - (n // x + n // y - n // lcm)

print(func(b, c, d) - func(a - 1, c, d))
ans_list = []
while True:
    s = input()
    if s == ".":
        break
    q_list = ["" for i in range(len(s))]
    now = -1
    ans = "yes"
    for i in list(s):
        if i == "(" or i == "[":
            now += 1
            q_list[now] = i
        elif i == ")" or i == "]":
            if (i == ")" and q_list[now] == "(") or (i == "]" and q_list[now] == "["):
                now -= 1
            elif now < 0 or i != q_list[now]:
                #print(i, now, q_list)
                ans = "no"
                break
        if ans == "no":
            break
    ans_list.append(ans)

for i in ans_list:
    print(i)


### FIXED CODE ###

ans_list = []
while True:
    s = input()
    if s == ".":
        break
    q_list = ["" for i in range(len(s))]
    now = -1
    ans = "yes"
    for i in list(s):
        if i == "(" or i == "[":
            now += 1
            q_list[now] = i
        elif i == ")":
            if now == -1:
                ans = "no"
            elif q_list[now] == "(":
                now -= 1
            else:
                ans = "no"
        elif i == "]":
            if now == -1:
                ans = "no"
            elif q_list[now] == "[":
                now -= 1
            else:
                ans = "no"
        if ans == "no":
            break
    if now >= 0:
        ans = "no"
    ans_list.append(ans)

for i in ans_list:
    print(i)
n = int(input())
a = list(map(int, input().split()))
l = []
 
 
for i in range(len(a) - 1):
    if a[i + 1] < a[i]:
        l.append(a[i]-a[i + 1])
        a[i + 1] = a[i]
print(sum(l))

### FIXED CODE ###

import math
n,x,t=map(int,input().split())
ans=math.ceil(n/x)*t
print(ans)
def myfunc(N):
	if(N  == 1):
		return 1
	return 2 * myfunc(N/2) + 1

if __name__ == "__main__":
	N = int(input())
	print(myfunc(N))

### FIXED CODE ###

def myfunc(N):
	if(N  <= 1):
		return 1
	return 2 * myfunc(int(N/2)) + 1

if __name__ == "__main__":
	N = int(input())
	print(myfunc(N))