Harryxun/stf_run huggingface dataset:
n = input()
k = input()


if n[0] == "1":
  print(n[1])
else:
  print(n[0])

### FIXED CODE ###

n = input()
k = int(input())


for i in range(len(n)):
  if i == k-1 or i == len(n)-1:
    print(n[i])
    exit()
  else:
    if n[i] != "1":
      print(n[i])
      exit()
a,b,k = map(int,input().split())
li = list(range(a,b+1))
if b - a + 1 >= 2 * k:
    for i in li[:k]:
        print(i)
    for i in li[-k:]:
        print(i)
else:
    for i in li:
        print(i)

### FIXED CODE ###

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

if (b-a+1) > 2*k:
    for i in range(a,a+k):
        print(i)
    for i in range(b-k+1,b+1):
        print(i)
else:
    for i in range(a,b+1):
        print(i)
a,b,c,x,y=map(int,input().split())
if x>=y:
    if c*2<=min(a,b):
        print(c*2*x)
    elif c*2<=max(a,b):
        if a>=b:
            print(c*2*x)
        else:
            print(c*2*y+a(x-y))
    elif c*2<=a+b:
        print(c*2*y+a*(x-y))
    else:
        print(a*x+b*y)
else:
    if c*2<=min(a,b):
        print(c*2*y)
    elif c*2<=max(a,b):
        if a<=b:
            print(c*2*y)
        else:
            print(c*2*y+b*(y-x))
    elif c*2<=a+b:
        print(c*2*x+b*(y-x))
    else:
        print(a*x+b*y)

### FIXED CODE ###

a,b,c,x,y=map(int,input().split())
l=sorted([a,b,c*2])
if l[0]==c*2:
    print(max(x,y)*c*2)
elif l[1]==c*2:
    if l[0]==a:
        print(y*c*2+max((x-y),0)*a)
    else:
        print(x*c*2+max((y-x),0)*b)
else:
    if a+b>=c*2:
        if x>=y:
            print(y*2*c+(x-y)*a)
        else:
            print(x*2*c+(y-x)*b)
    else:
        print(x*a+y*b)
x = int(input())
def isExp(num):
	if num ==1 : return True
	for i in range(2,11):
		pow(num, 1/i) % 1.0 == 0.0: return True
	return False
def solve():
	for i in range(x,0,-1):
		if isExp(i): return i

print(solve())

### FIXED CODE ###

x = int(input())

def isPrime(n):
  if n%2 == 0 or n%3 == 0: return True
  if n<3: return False
  for i in range( 2, int(n**0.5) +1):
    if n%i == 0: return False
  return True

primes = [i for i in range(1, 32) if isPrime(i)]

def isExp(n):
  if n==1: return True
  for i in [p for p in primes if p<int(n**0.5)+1]:
    p = 0
    while i**p<=n:
      if i**p == n: return True
      p+=1
  return False

def solve():
  for i in range(x,0,-1):
    if isExp(i): return i

print(solve())
S = list(input().split())

if S[0] == '1':
  print(S[1])
else:
  print(S[0])

### FIXED CODE ###

N =  list(map(int,input()))
K = int(input())

def func(N, K):
    for n in range(len(N)):
        if N[n] != 1:
            if K > n:
                return N[n]
    
    return 1

print(func(N, K))
n,m=map(int,input().split())
a=[0]*n
b=[0]*n
ans=0
temp=0
for i in range(n):
  at,bt=map(int,input().split())
  a[i]=at
  b[i]=bt
import numpy as np
a=np.array(a)
b=np.array(b)
t=np.argmin(a)
while temp<m:
  ans=ans+a[t]
  temp=temp+1
  b[t]=b[t]-1
  if b[t]==0:
    a=np.delete(a,t)
    b=np.delete(b,t)
    t=np.argmin(a)
print(ans)

### FIXED CODE ###

n,m=map(int,input().split())
t=[0]*n
ans=0
temp=0
for i in range(n):
  at,bt=map(int,input().split())
  t[i]=[at,bt]
t.sort()
i=0
while True:
  if temp+t[i][1]>=m:
    ans=ans+t[i][0]*(m-temp)
    break
  else:
    ans=ans+t[i][0]*t[i][1]
    temp=temp+t[i][1]
    i=i+1
print(ans)
import sys

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

total_votes = sum(A)
threshold = total_votes * (1 / (4 * M))

chooseable = 0

for a in A:
  if a >= threshold:
    chooseable += 1
    if chooseable >= M:
      print("Yes")
      sys.exit(1)

print("No")

### FIXED CODE ###

import sys

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

total_votes = sum(A)
threshold = total_votes * (1 / (4 * M))

chooseable = 0

for a in A:
  if a >= threshold:
    chooseable += 1
    if chooseable >= M:
      print("Yes")
      sys.exit(0)

print("No")
n = input()
ans = 'No'
for s in n:
    if s == '7'
    ans = 'Yes'
    break
print(ans)

### FIXED CODE ###

n = input()
ans = 'No'
for s in n:
    if s == '7':
        ans = 'Yes'
        break
print(ans)
n = int(input())
s1 = list(input())
s2 = list(input())
s3 = list(input())

ans = ""
a = set(s1)&set(s2)&set(s3)
s1 = [x for x in s1 if x in a]
s2 = [x for x in s2 if x in a]
s3 =[x for x in s2 if x in a]
s1.sort()
s2.sort()
s3.sort()
print(s1,s2,s3)
for i in range(min(len(s1),len(s2),len(s3))):
    if s1[:i+1] == s2[:i+1] == s3[:i+1]:
        ans = "".join(s1[:i+1])
    else:
        break
print(ans)


### FIXED CODE ###

from collections import Counter
n = int(input())
L = []
for i in range(n):
    L.append(sorted(list(input())))
set1 = set(L[0])
for i in range(2,n):
    set1 = set1&set(L[i])
li = []
al = "abcdefghijklmnopqrstuvwxyz"
for s in al:
    if s in set1:
        min1 = 10 **10
        for i in range(n):
            a = Counter(L[i])
            min1 = min(min1,a[s])
        li.append((s,min1))
ans = ""
for i in range(len(li)):
    ans += li[i][0]*li[i][1]
print(ans)
a=int(input())
print(["ABC","ARC","AGC"][int(a/2800)+int(a/1200)])

### FIXED CODE ###

a=int(input())
print(["AGC","ARC","ABC"][(a < 2800) + (a < 1200)])
[l, r] = [int(i) for i in input().split()]

if (r - l >= 672):
    print(0)
else:
    a = 2018
    for i in range(l, r):
        for j in range(i + 1, r + 1):
            a = min(a, ((i % 2019) * (j % 2019)) % 2019)

print(a)


### FIXED CODE ###

[l, r] = [int(i) for i in input().split()]

if (r - l >= 673):
    print(0)
else:
    a = 2018
    for i in range(l, r):
        for j in range(i + 1, r + 1):
            b = i % 2019
            c = j % 2019
            d = (b * c) % 2019
            a = min(a, d)
    print(a)
N = int(input())

word = [word.append(input()) for i in range(N)]


for i in range(1, N):
    if word[i][0] != word[i - 1][-1] or word.count(word[i]) != 1:
        print('No')
        exit()

print('Yes')



### FIXED CODE ###

N = int(input())

word = []
for i in range(N):
    word.append(input())

for i in range(N - 1):
    if word.count(word[i]) != 1:
        print('No')
        exit()

for i in range(1, N):
    if word[i][0] != word[i - 1][-1]:
        print('No')
        exit()

print('Yes')
import sys

def resolve():
    input = sys.stdin.readline
    A, B, M = map(int, input().split())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    grid=[list(map(int,input().split())) for i in range(M)]

    res = min(a) + min(b)

    for x, y, c in grid:
        res = min(res, a[x-1]+b[y-1]-c)

    print(res)
    
resolve()

### FIXED CODE ###

import re

def resolve():
    str = input()
    if re.match('^(hi)+$', str):
        print("Yes")
    else:
        print("No")
        
resolve()
from collections import defaultdict
N = int(input())
C = defaultdict(int)
for i in range(N):
  D = int(input())
  C[D] = i + 1
E = []
H = [1] * (N + 1)
DD = sorted([[k, v] for k, v in C.items()], reverse=True)
Adj = [[] for i in range(N)]
for D, n in DD[:-1]:
  try:
    p = C[D - N + 2 * H[n]]
    if n == p:
      raise Error
    E.append([n, p])
    Adj[n - 1].append(p - 1)
    Adj[p - 1].append(n - 1)
    H[p] += H[n]
  except:
    print(-1)
    break
else:
  dist = [N] * N
  dist[DD[-1][1] - 1] = 0
  Q = [DD[-1][1] - 1]
  for i in range(N):
    s = Q[i]
    for adj in Adj[s]:
      if dist[adj] == N:
        dist[adj] = dist[s] + 1
        Q.append(adj)
  if sum(dist) == DD[-1][0]:
    for e in E:
      print(e[0], e[1])
  else:
    print(-1)

### FIXED CODE ###

from collections import defaultdict
N = int(input())
C = defaultdict(int)
for i in range(N):
  D = int(input())
  C[D] = i + 1
E = []
H = [1] * (N + 1)
DD = sorted([[k, v] for k, v in C.items()], reverse=True)
Adj = [[] for i in range(N)]
for D, n in DD[:-1]:
  try:
    p = C[D - N + 2 * H[n]]
    if n == p:
      raise Error
    E.append([n, p])
    Adj[n - 1].append(p - 1)
    Adj[p - 1].append(n - 1)
    H[p] += H[n]
  except:
    print(-1)
    break
else:
  dist = [N] * N
  dist[DD[-1][1] - 1] = 0
  Q = [DD[-1][1] - 1] + [N] * N
  tail = 1
  for i in range(N):
    s = Q[i]
    if s == N:
      print(-1)
      break
    for adj in Adj[s]:
      if dist[adj] == N:
        dist[adj] = dist[s] + 1
        Q[tail] = adj
        tail += 1
  else:
    if sum(dist) == DD[-1][0]:
      for e in E:
        print(e[0], e[1])
    else:
      print(-1)
if boundary_value <= (min_value + max_value):
    if boundary_value <= min_value:
        print(boundary_value * max(x, y))
    elif (a == max_value and y <= x) or (b == max_value and x <= y):
        print(boundary_value * max(x, y))
    else:
        print(boundary_value * (max(x, y) - abs(x - y)) +
              min_value * abs(x - y))
elif (min_value + max_value) < boundary_value:
    print(a * x + b * y)


### FIXED CODE ###

INF = 10 ** 9
a, b, c, x, y = map(int, input().split())

ans = INF
for i in range(10 ** 5 + 1):
    ans = min(ans, i * 2 * c + max((x - i), 0) * a + max((y - i), 0) * b)
print(ans)
s = input()

hour = s//3600
minute = s//60
sec = s%60

print(str(hour)+":"+str(minute)+":"+str(sec))


### FIXED CODE ###

s = input()
int_s = int(s)
hour = int_s//3600
hour_Surplus = int_s%3600
minute = hour_Surplus//60
sec = hour_Surplus%60

print(str(hour)+":"+str(minute)+":"+str(sec))
import math
a,b,c,d = map(int,input().split())
lcm = c*d // math.gcd(c,d)
A = ((a-1) // c) + ((a-1) // d) - ((a-1) // lcm) 
B = (b // c) + (b // d) - (b // lcm)
ans = B-A
print( b-a+1-ans )

### FIXED CODE ###

import fractions
a,b,c,d = map(int,input().split())
lcm = c*d // fractions.gcd(c,d)
A = ((a-1) // c) + ((a-1) // d) - ((a-1) // lcm) 
B = (b // c) + (b // d) - (b // lcm)
ans = B-A
print(b-a+1-ans)
from scipy.special import comb
n, k = (int(x) for x in input().split())
a = [int(x) for x in input().split()]
a = sorted(a)
print(a)
max_a = 0
for i in range(k - 1, n):
    max_a += a[i] * comb(i, k - 1)
min_a = 0
for i in range(n - k + 1):
    min_a += a[i] * comb(n - i - 1, k - 1)
print(int((max_a - min_a) % 1000000007))

### FIXED CODE ###

n, k = (int(x) for x in input().split())
a = [int(x) for x in input().split()]
a = sorted(a)
fact = [1]
for i in range(1, n + 1):
    fact.append(fact[-1] * i % 1000000007)
max_a = 0
for i in range(k - 1, n):
    max_a += a[i] * fact[i] * pow(fact[i - k + 1], 1000000005, 1000000007) * pow(fact[k - 1], 1000000005, 1000000007) % 1000000007
a = a[::-1]
min_a = 0
for i in range(k - 1, n):
    min_a += a[i] * fact[i] * pow(fact[i - k + 1], 1000000005, 1000000007) * pow(fact[k - 1], 1000000005, 1000000007) % 1000000007
print(int((max_a - min_a) % 1000000007))
a,b,k = list(map(int, input().split()))

def eat(a,b):
    a-= a%2
    b=int(b+a/2)
    a= int(a/2)
    return a,b

for i in range(k):
    if i%2==0:
        a,b = eat(a,b)
    else:
        b,a = eat(b,a)
print(a,b)

### FIXED CODE ###

s = str(input())
if len(s)==2:
    print(s)
else:
    print(s[::-1])
print(int(input())-int(input()))

### FIXED CODE ###

X, t = map(int, input().split())
print(X-t if X > t else 0)
import sys
input = sys.stdin.readline
sys.setrecursionlimit(10 ** 7)
def main():
    A = input()[::-1]
    A = "0" + A
    # lis_num = [int(s) for s in A]

    # print(lis_num)

    # S = [0] * len(lis_num)
    S = [0] * len(A)
    cnt = [0] * 2019
    cnt[0] = 1

    for i in range(len(A) - 1):
        S[i + 1] = S[i] + int(A[i + 1]) * pow(10, i)
        cnt[S[i + 1] % 2019] += 1

    # print(S)


    # for i in S:
    #     cnt[i % 2019] += 1

    ans = 0

    for i in range(2019):
        ans += cnt[i] * (cnt[i] - 1) // 2

    print(ans)
    
if __name__ == '__main__':
    main()


### FIXED CODE ###

def main():
    A = input()[::-1]
    A = "0" + A
    # lis_num = [int(s) for s in A]

    # print(lis_num)

    # S = [0] * len(lis_num)
    S = [0] * len(A)
    cnt = [0] * 2019
    cnt[0] = 1

    for i in range(len(A) - 1):
        S[i + 1] = (S[i] + int(A[i + 1]) * pow(10, i, 2019)) % 2019
        cnt[S[i + 1] % 2019] += 1

    # print(S)

    # for i in S:
    #     cnt[i % 2019] += 1

    ans = 0

    for i in cnt:
        ans += i * (i - 1) // 2

    print(ans)


if __name__ == "__main__":
    main()
import re
if S.startswith('k') and S.endswith('eyence'):
    print('YES')
elif S.startswith('ke') and S.endswith('yence'):
    print('YES')
elif S.startswith('key') and S.endswith('ence'):
    print('YES')
elif S.startswith('keye') and S.endswith('nce'):
    print('YES')
elif S.startswith('keyen') and S.endswith('ce'):
    print('YES')
elif S.startswith('keyenc') and S.endswith('e'):
    print('YES')
elif S == 'keyence':
    print('YES')
else:
    print('NO')

### FIXED CODE ###

S = raw_input()
if S.startswith('k') and S.endswith('eyence'):
    print('YES')
elif S.startswith('ke') and S.endswith('yence'):
    print('YES')
elif S.startswith('key') and S.endswith('ence'):
    print('YES')
elif S.startswith('keye') and S.endswith('nce'):
    print('YES')
elif S.startswith('keyen') and S.endswith('ce'):
    print('YES')
elif S.startswith('keyenc') and S.endswith('e'):
    print('YES')
elif S == 'keyence':
    print('YES')
else:
    print('NO')
stack = []
store_num = []
store_result = []

for i,c in enumerate(input_list.split()):

        
        
        def pop_and_stack(list_,num):
                     
            list_.pop()
            list_.pop()
            list_.append(num)
            
            return list_
            
    
        if c == '+' :
            a = stack[-2]
            b = stack[-1]
            num = a+b
            pop_and_stack(stack,num)

        elif c== "-":
            a = stack[-2]
            b = stack[-1]
            num = a-b
            pop_and_stack(stack,num)
        elif c =='*':
            a = stack[-2]
            b = stack[-1]
            num = a*b
            pop_and_stack(stack,num)  
        elif c == '/':
            a = stack[-2]
            b = stack[-1]
            num = a/b
            pop_and_stack(stack,num)
        else:
            stack.append(int(c))
            
print(stack[-1]) 


### FIXED CODE ###

stack = []
store_num = []
store_result = []

for i,c in enumerate(input().split()): 
        
        def pop_and_stack(list_,num):
                     
            list_.pop()
            list_.pop()
            list_.append(num)
            
            return list_
            
    
        if c == '+' :
            a = stack[-2]
            b = stack[-1]
            num = a+b
            pop_and_stack(stack,num)

        elif c== "-":
            a = stack[-2]
            b = stack[-1]
            num = a-b
            pop_and_stack(stack,num)
        elif c =='*':
            a = stack[-2]
            b = stack[-1]
            num = a*b
            pop_and_stack(stack,num)  
        elif c == '/':
            a = stack[-2]
            b = stack[-1]
            num = a/b
            pop_and_stack(stack,num)
        else:
            stack.append(int(c))
            
print(stack[-1])
N, Q = map(int, input().split())		# 5 7
S = input()

#print(N,Q,S)

L = S.replace('AC', '1 0 ').replace('T', '0 ').replace('G', '0 ')
R = S.replace('AC', '0 1 ').replace('T', '0 ').replace('G', '0 ')

L = list( map(int, L.split()) )	# 1 2 3 4 5 ...
R = list( map(int, R.split()) )	# 1 2 3 4 5 ...

#L = [1,2,3,4,5,6,7,8,9]
#R = [1,2,3,4,5,6,7,8,9]
#print(N,Q,S,L,R)
#print(N,Q,S)
#print("L", L)
#print("R", R)


from functools import reduce
#print( reduce(lambda x,y: x+y, L) )	#=> 10 (=sum(1,2,3,4))


for q in range(1,Q+1):
	ans=0
	l, r = map(int, input().split())		# 5 7

	X=L[l-1:l]
	Y=R[l+1:r]
	Z=X+Y
	
	ans = reduce(lambda x,y: x+y, Z)	#=> 10 (=sum(1,2,3,4))

	#print(l,r,X,Y,Z,ans)

	print(ans)
	

### FIXED CODE ###

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

C=[0]*(N)
c=0
for i in range(len(S)-1):
  if S[i:i+2]=="AC": c += 1
  C[i] = c

#print(C)

for q in range(Q):
  l, r = map(int, input().split())
  l, r = l-1, r-1

  ans = C[r-1] - C[l-1]
  print(ans)
from collections import *
from itertools import *
from bisect import *
from heapq import *
import copy
import math


#N,K=map(int,input().split())
N=int(input())
S=input()
Q=int(input())
Query=[input.split() for i in range(Q)]

def segfunc(x,y):
    return (x|y)

def init(init_val):
    #set_val
    for i in range(n):
        seg[i+num-1]=init_val[i]
    #built
    for i in range(num-2,-1,-1) :
        seg[i]=seg[2*i+1]|seg[2*i+2]

def update(k,b):
    k += num-1
    if seg[k]=={b}:
        return ()
    seg[k] = {b}
    while k:
        k = (k-1)>>1
        seg[k] = seg[k*2+1]|seg[k*2+2]

def query(p,q):
    if q<=p:
        return ide_ele
    p += num-1
    q += num-2
    res=set()
    while q-p>1:
        if p&1 == 0:
            res = res|seg[p]
        if q&1 == 1:
            res = res|seg[q]
            q -= 1
        p = p>>1
        q = (q-1)>>1
    if p == q:
        res = res|seg[p]
    else:
        res = res|seg[p]|seg[q]
    return res

#num:n以上の最小の2のべき乗
n=N
num =2**(n-1).bit_length()
seg=[set()] * (2*num)

for i in range(N):
    seg[i+num-1]={ord(S[i])}
for k in range(num-2,-1,-1):
    seg[k] = seg[k*2+1]|seg[k*2+2]
for type, i, c in Query:
    if type=="1":
        update(int(i)-1,ord(c))
    else:
        print(len(query(int(i)-1,int(c))))
    #print(seg)


### FIXED CODE ###

from collections import *
from itertools import *
from bisect import *
from heapq import *
import copy
import math


#N,K=map(int,input().split())
N=int(input())
S=input()
Q=int(input())
Query=[input().split() for i in range(Q)]

def segfunc(x,y):
    return (x|y)

def init(init_val):
    #set_val
    for i in range(n):
        seg[i+num-1]=init_val[i]
    #built
    for i in range(num-2,-1,-1) :
        seg[i]=seg[2*i+1]|seg[2*i+2]

def update(k,b):
    k += num-1
    if seg[k]=={b}:
        return ()
    seg[k] = {b}
    while k:
        k = (k-1)>>1
        seg[k] = seg[k*2+1]|seg[k*2+2]

def query(p,q):
    if q<=p:
        return ide_ele
    p += num-1
    q += num-2
    res=set()
    while q-p>1:
        if p&1 == 0:
            res = res|seg[p]
        if q&1 == 1:
            res = res|seg[q]
            q -= 1
        p = p>>1
        q = (q-1)>>1
    if p == q:
        res = res|seg[p]
    else:
        res = res|seg[p]|seg[q]
    return res

#num:n以上の最小の2のべき乗
n=N
num =2**(n-1).bit_length()
seg=[set()] * (2*num)

for i in range(N):
    seg[i+num-1]={ord(S[i])}
for k in range(num-2,-1,-1):
    seg[k] = seg[k*2+1]|seg[k*2+2]
for type, i, c in Query:
    if type=="1":
        update(int(i)-1,ord(c))
    else:
        print(len(query(int(i)-1,int(c))))
    #print(seg)
s= input().split()
a=int(s.[0])
b=int(s.[1])
c=int(s.[2])

if((a>b)and(b>c)):
    print("Yes")
else:
    print("No")

### FIXED CODE ###

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

a=int(a)
b=int(b)
c=int(c)

if(c>b>a):
    print("Yes")
else:
    print("No")
N, A, B = map(int, input().split())
if A == :
  print(0)
else:
  print(N) if A > N else print(A if N < (A + B) else N - B)

### FIXED CODE ###

N, A, B = map(int, input().split())
if A == 0:
  print(0)
elif A > N or B == 0:
  print(N)
else:
  M = N // (A + B)
  if N - M * (A + B) > A:
    print(A * M + A)
  else:
    print(N - M * B)
N = int(input())
x = []
u = []
Y = 0
for i in range(N):
    s = [i for i in input().split()]
   	x.append(float(s[0]))
    u.append(s[1])

    if u[i] == 'BTC':
        Y += x[i]*380000
    else:
        Y += x[i]

print(Y)

### FIXED CODE ###

N = int(input())
x = []
u = []
Y = 0
for i in range(N):
    s = [i for i in input().split()]
    x.append(float(s[0]))
    u.append(s[1])

    if u[i] == 'BTC':
        Y += x[i]*380000
    else:
        Y += x[i]

print(Y)
from fractions import gcd
from math import sqrt
a,s=map(int,input().split())
f=gcd(a,s)
ans=1
if f<=3:print(1+(f!=1));exit()
for i in range(2,int(sqrt(f))+1):

  if f%i==0:
    ans+=1
    while f%i==0:f//=i
print(ans+(n!=1))

### FIXED CODE ###

a,s=map(int,input().split())
def c(d,f):
  if d==0:return f
  else:return c(f%d,d)
  
j=c(a,s)
if j==1:print(1);exit()
def factorization(n):
    arr = []
    temp = n
    for i in range(2, int(-(-n**0.5//1))+1):
        if temp%i==0:
            cnt=0
            while temp%i==0:
                cnt+=1
                temp //= i
            arr.append([i, cnt])

    if temp!=1:
        arr.append([temp, 1])

    if arr==[]:
        arr.append([n, 1])

    return arr

print(len(factorization(j))+1)
aji=0
eat=99999

for i in range(1,N+1):
    aji=aji+i+L-1
    if abs(aji) < abs(eat):
        eat = aji
        
print(aji)

### FIXED CODE ###

N,L=map(int, input().split())  #複数数値入力　「A B」みたいなスペース空いた入力のとき

aji_sum=0
eat=99999

for i in range(1,N+1):
    
    aji_sum=aji_sum+i+L-1
    if abs(i+L-1) < abs(eat):
        eat = i+L-1

print(aji_sum-eat)
k,s=map(int,input().split())
count=0
for x in range(k+1):
  for y in range(k+1):
    for z in range(k+1):
      if x+y+z=s:
        count+=1
print(count)

### FIXED CODE ###

k,s=map(int,input().split())
count=0
for x in range(k+1):
  for y in range(k+1):
      if k>=s-x-y>=0:
        count+=1
print(count)
n, k = map(int, input().split())
p = 0
for i in range(1, n + 1):
    if i < k:
        count = 1
        while i * count < k:
            count += 1
        p += 0.5 ^ count
    else:
        p += 1
print(p/n)

### FIXED CODE ###

n, k = map(int, input().split())
p = 0
for i in range(1, n + 1):
    if i < k:
        count = 1
        while (i * (2 ** count)) < k:
            count += 1
        p += (1 / n) * (0.5 ** count)
    else:
        p += 1 / n
print(p)
a, b = map(int, input().split())

print(-(-(a + b) // 2)

### FIXED CODE ###

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

print(-(-(a + b) // 2))
N, R = map(int, input().spit())
if R < 10:
  print(R+100*(10-N))
else:
  print(R)

### FIXED CODE ###

N, R = map(int, input().split())
if N < 10:
  print(R+100*(10-N))
else:
  print(R)
s1 = input()
s2 = input()
password = ''.join([i,j for i, j in zip(s1, s2)])
print(password)

### FIXED CODE ###

o=list(input())
e=list(input())+[""]
for x,y in zip(o,e):print(x+y,end="")
x=input().split()
h=int(x[0])
n=int(x[1])
a=[]
b=[]
for k in range(n):
  x=input().split()
  a.append(int(x[0]))
  b.append(int(x[1]))  
m=max(a)  
dp=[10**9]*(h+m)
dp[0]=0
for k in range(h+m):
  for i in range(n):
    if k-a[i]<0:
      continue
    new=dp[k-a[i]]+b[i]
    if new < dp[k]:
      dp[k]=new
print(min(dp[h:h+m]))
      
      

### FIXED CODE ###

x=input().split()
H=int(x[0])
A=int(x[1])
if H%A==0:
  print(H//A)
else:
  print(H//A+1)
import numpy as np
from typing import List, Tuple

N = int(input())
X = list(map(int, input()))


def binary_mod(bits: List[int], div: int) -> int:
    val = 0
    for b in bits:
        val = (val * 2 + b) % div
    return val


def f(x):
    cnt = 0
    while x > 0:
        x = x % bin(x).count('1')
        cnt += 1
    return cnt


popcount = sum(X)
div1 = popcount + 1
div2 = popcount - 1

if popcount == 0:
    print('\n'.join(map(str, [0] * N)))
else:
    rem1 = binary_mod(X, div1)
    rem2 = binary_mod(X, div2)

    for i in range(N):
        if X[i] == 0:
            r = (rem1 + pow(2, N - 1 - i, div1)) % div1
            print(f(r) + 1)
        else:
            r = (rem2 - pow(2, N - 1 - i, div2) + div2) % div2
            print(f(r) + 1)


### FIXED CODE ###

import numpy as np
from typing import List, Tuple

N = int(input())
X = list(map(int, input()))


def binary_mod(bits: List[int], div: int) -> int:
    if div == 0:
        return 0

    val = 0
    for b in bits:
        val = (val * 2 + b) % div
    return val


def f(x):
    cnt = 0
    while x > 0:
        x = x % bin(x).count('1')
        cnt += 1
    return cnt


popcount = sum(X)
div1 = popcount + 1
div2 = popcount - 1

if popcount == 0:
    print('\n'.join(map(str, [1] * N)))
else:
    rem1 = binary_mod(X, div1)
    rem2 = binary_mod(X, div2)

    for i in range(N):
        if X[i] == 0:
            r = (rem1 + pow(2, N - 1 - i, div1)) % div1
            print(f(r) + 1)
        else:
            if div2 > 0:
                r = (rem2 - pow(2, N - 1 - i, div2) + div2) % div2
                print(f(r) + 1)
            else:
                print(0)
a,b,h=map(int, input().split())
print((a+b)*h/2)

### FIXED CODE ###

a=int(input()) 
b=int(input()) 
h=int(input()) 

print(int((a+b)*h/2))