Harryxun/sft_time huggingface dataset:
### BUGGY CODE ###

INT_MAX = 2**31 - 1
def update():
    for i in range(_N):
        x = i + N - 1
        A_bin_tree[x] = arr[i]
        while True:
            if(x <= 0):
                break
            x = (x - 1)//2
            left = x*2+1
            right = x*2+2
            A_bin_tree[x] = min(A_bin_tree[left],A_bin_tree[right])

def find(x,y,k,l,r):

    if (r <= x or y <= l):
        return INT_MAX
    if ( x <= l and r <= y):
        return A_bin_tree[k]
    v_left = find(x, y, k*2 + 1, l, int((l+r)/2))
    v_right = find(x, y, k*2 + 2, int((l+r)/2), r)
    return min(v_left, v_right)

_N,k = map(int, input().split())
*arr, = map(int,input().split())
N = 1
res = []
while True:
    if(N >= _N):
        break
    N *= 2
if not (N == 1):
    A_bin_tree = [INT_MAX]*(2*N - 1)
else:
    A_bin_tree = [INT_MAX]
update()

for i in range(_N-k+1):
    z = find(i,i+k,0,0,N)
    res.append(z)

print(*res)



### FIXED CODE ###

INTMAX = (1<<31) - 1

def ans():
    for i in range(k):
        x = i + OFS
        A[x] = arr[i]
        while True:
            if(x <= 0):
                break
            x = (x - 1)//2
            l = A[x*2+1]
            r = A[x*2+2]
            A[x] = l if l < r else r#min(tree[left],tree[right])
    res = []
    c = 0
    for i in range(_N-k):
        res.append(A[0])
        x = c + OFS
        A[x] = arr[i+k]
        while True:
            if(x <= 0):
                break
            x = (x - 1)//2
            l = A[x*2+1]
            r = A[x*2+2]
            A[x] = l if l < r else r
        c += 1
        if(c == k):
            c = 0
    res.append(A[0])
    print(*res)

_N,k = map(int, input().split())
*arr, = map(int,input().split())
if(k==1):
    print(*arr)
else:
    N = 2**(_N-1).bit_length()
    A = [INTMAX]*(2*N)
    OFS = N - 1
    ans()
### BUGGY CODE ###

n,k = map(int,input().split())
p = list(map(int,input().split()))
ans = 0

for i in range(n):
    x = sum(p[i:i+k])/2 + 0.5*k 
    if x >= ans:
        ans = x
print(ans)

### FIXED CODE ###

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

num = sum(p[:k])
ans = num/2 + 0.5*k
for i in range(k,n):
    num += p[i] - p[i-k]
    ans = max(ans,num/2 + 0.5*k)
print(ans)
### BUGGY CODE ###

n=int(input())
mod=10**9+7
l=list(map(int,input().split()))
d=len(str(bin(max(l))))-2
ll=[[0,0] for i in range(d)]
ans=0
for i in l:
  for j,v in enumerate(bin(i)[2:].zfill(d)):
    ll[d-j-1][int(v)]+=1
for i,(a,s) in enumerate(ll):
  ans+=(2**i%mod)*a*s%mod
  ans%=mod
print(ans)

### FIXED CODE ###

n=int(input())
l=[int(c) for c in input().split()]
ans=0
mod=10**9+7
for i in range(60):
  s=sum(a>>i&1 for a in l)
  ans+=s*(n-s)<<i%mod
  ans%=mod
print(ans)
### BUGGY CODE ###

n,k = map(int,input().split())
lis = list(map(int,input().split()))
new_lis = []
for i,l in enumerate(lis):
    if i+k <= len(lis):
        new_lis.append((sum(lis[i:i+k])+k)/2)
#print(new_lis)
print(max(new_lis))

### FIXED CODE ###

n,k = map(int,input().split())
li = list(map(int,input().split()))
new_li = [0]
for l in li:
    new_li.append(new_li[-1]+(l+1)/2)
# print(new_li)
# [0, 1.0, 2.5, 4.0, 6.5, 9.5]
tmp_li = []
for i,n in enumerate(new_li):
    if i < k-1:
        continue
    tmp_li.append(new_li[i] - new_li[i-k])
    #print(i,i-k)
print(max(tmp_li))
### BUGGY CODE ###

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

i = 1
cnt = 0
while n > 0:
    if i % 2 != 0:
        if n-a > 0:
            n -= a
            cnt += a
        else:
            cnt += n
            n = 0
    else:
        n -= b
    i += 1

print(cnt)

### FIXED CODE ###

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

ans = a * (n//(a+b)) + min(n%(a+b), a)
print(ans)
### BUGGY CODE ###

import sys
sys.setrecursionlimit(10**7)
n , q = map(int, input().split())
r = [[]for i in range(n)]
s = [0]*n
v = [0]*n
for i in range(n-1):
    a , b = map(int, input().split())
    r[a-1].append(b-1)
    r[b-1].append(a-1)
for i in range(q):
    p , x = map(int, input().split())
    s[p-1]+=x

def dfs(now):
    v[now]=1
    for i in r[now]:
        if v[i]==0:
            s[i]+=s[now]
            dfs(i)
dfs(0)
print(' '.join(list(map(str,s))))


### FIXED CODE ###

from collections import deque

n , q = map(int, input().split())
r = [[]for i in range(n)]
s = [0]*n
v = [0]*n
for i in range(n-1):
    a , b = map(int, input().split())
    r[a-1].append(b-1)
    r[b-1].append(a-1)
for i in range(q):
    p , x = map(int, input().split())
    s[p-1]+=x
d= deque()
d.append(0)
def bfs(now):
    v[now]=1
    while d:
        i = d.popleft()
        for j in r[i]:
            if v[j]==0:
                s[j]+=s[i]
                v[j]=1
                d.append(j)
    return
bfs(0)
print(' '.join(list(map(str,s))))
### BUGGY CODE ###

#coding:utf-8
import copy
x, y, a, b, c = map(int, input().split())
p = input().split()
q = input().split()
r = input().split()
p = [int(i) for i in p]
q = [int(i) for i in q]
r = [int(i) for i in r]

def pick(list1,list2,number):
    list_f = copy.copy(list1)
    list_f2 = copy.copy(list1)
    list_s = copy.copy(list2)
    list_f2.extend(list_s)
    list_f2.sort(reverse = True)
    total_deli = 0
    for i in range(number):
        delic = list_f2[0]
        total_deli += int(delic)
        if(delic not in list_f):
            list_s.remove(delic)
        list_f2.remove(delic)
    return total_deli, list_s


ans1 = 0
ans2 = 0
ans3 = 0
clear_apple = []

#パターン1：赤リンゴから緑のリンゴへ
ans1,clear_apple = pick(p,r,x)
ans2,clear_apple = pick(q,clear_apple,y)
ans3 = ans1 + ans2

#パターン2：緑のリンゴから赤のリンゴへ
ans1,clear_apple = pick(q,r,y)
ans2,clear_apple = pick(p,clear_apple,x)
ans2 = ans1 + ans2

ans = max(ans2,ans3)
print("{}".format(ans))

### FIXED CODE ###

#coding:utf-8
x, y, a, b, c = map(int, input().split())
p = [int(i) for i in input().split()]
q = [int(i) for i in input().split()]
r = [int(i) for i in input().split()]
p.sort(reverse = True)
q.sort(reverse = True)

p = p[0:x]
q = q[0:y]

p.extend(q)
p.extend(r)
p.sort(reverse = True)

ans = 0

for i in range(x + y):
  ans += p[i]
  
print("{}".format(ans))
### BUGGY CODE ###

N, M = map(int, input().split())
group = []
for _ in range(M):
  A, B = map(int, input().split())
  for g in group:
    if A in g or B in g:
      if not A in g:
        g.add(A)
      if not B in g:
        g.add(B)
      break
  else:
    group.append(set((A, B)))

# print(group)

ans = 1
for g in group:
  ans = max(ans, len(g))
print(ans)

### FIXED CODE ###

class UnionFind():
    def __init__(self, n):
        self.n = n
        self.parents = [-1] * n

    def find(self, x):
        if self.parents[x] < 0:
            return x
        else:
            self.parents[x] = self.find(self.parents[x])
            return self.parents[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if x == y:
            return

        if self.parents[x] > self.parents[y]:
            x, y = y, x

        self.parents[x] += self.parents[y]
        self.parents[y] = x

    def size(self, x):
        return -self.parents[self.find(x)]

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def members(self, x):
        root = self.find(x)
        return [i for i in range(self.n) if self.find(i) == root]

    def roots(self):
        return [i for i, x in enumerate(self.parents) if x < 0]

    def group_count(self):
        return len(self.roots())

    def all_group_members(self):
        return {r: self.members(r) for r in self.roots()}

    def __str__(self):
        return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots())


N, M = map(int, input().split())
uf = UnionFind(N+1)

for _ in range(M):
  A, B = map(int, input().split())
  uf.union(A, B)
  # print(uf)
  # print()

print(max([uf.size(r) for r in uf.roots()]))
### BUGGY CODE ###

n,q = map(int,input().split())
s = input()
word = list(s)
li = [list(input().split()) for _ in range(q)]
memo = {}


def dfs(m):
    k = m
    if m in memo:
        return memo[m]
    for i in range(q):
        if word[m] == li[i][0]:
            if li[i][1] == 'R':
                m += 1
            else:
                m -= 1
        if m < 0:
            memo[k] = 'Left'
            return 'Left'
        elif m > n-1:
            memo[k] = 'Right'
            return  'Right'
    memo[k] = True
    return True

def left(a,b):
    m = int((a+b)/2)
    if a == m:
        return b
    if dfs(m) == 'Left':
        return left(m,b)
    else:
        return left(a,m)

def right(a,b):
    m = int((a+b)/2)
    if a == m:
        return a
    if dfs(m) == 'Right':
        return right(a,m)
    else:
        return right(m,b)

if dfs(0) == 'Right':
    print(0)
elif dfs(0) == 'Left':
    if dfs(n-1) == 'Right':
        print(right(0,n-1) - left(0,n-1) + 1)
    elif dfs(n-1) == 'Left':
        print(0)
    else:
        print(n - left(0,n-1))
else:
    if dfs(b) == 'Right':
        print(right(0,n-1) + 1)
    elif dfs(b) == 'Left':
        print(0)
    else:
        print(n)


### FIXED CODE ###

n,q = map(int,input().split())
s = input()
word = list(s)
li = [list(input().split()) for _ in range(q)]
memo = {}

def dfs(m):
    k = m
    if m in memo:
        return memo[m]
    for x in li:
        if word[m] == x[0]:
            if x[1] == 'R':
                m += 1
            else:
                m -= 1
        if m < 0:
            memo[k] = 'Left'
            return 'Left'
        elif m > n-1:
            memo[k] = 'Right'
            return  'Right'
    memo[k] = True
    return True

def left(a,b):
    m = int((a+b)/2)
    if a == m:
        return b
    elif dfs(m) == 'Left':
        return left(m,b)
    else:
        return left(a,m)

def right(a,b):
    m = int((a+b)/2)
    if a == m:
        return a
    elif dfs(m) == 'Right':
        return right(a,m)
    else:
        return right(m,b)

if dfs(0) == 'Right':
    print(0)
elif dfs(0) == 'Left':
    if dfs(n-1) == 'Right':
        print(right(0,n-1) - left(0,n-1) + 1)
    elif dfs(n-1) == 'Left':
        print(0)
    else:
        print(n - left(0,n-1))
else:
    if dfs(b) == 'Right':
        print(right(0,n-1) + 1)
    elif dfs(b) == 'Left':
        print(0)
    else:
        print(n)
### BUGGY CODE ###

import bisect
def inpl(): return [int(i) for i in input().split()]
N = int(input())
a = inpl()
b = [0 for _ in range(N)]
for i in range(N):
    b[a[i]-1] = i+1
rng = [0, N+1]
ans = 0
for i, v in enumerate(b):
    x = bisect.bisect_left(rng, v)
    st = rng[x-1]
    en = rng[x]
    ans += (i+1)*(v-st)*(en-v)
    bisect.insort_left(rng, v)
print(ans)

### FIXED CODE ###

def inpl(): return [int(i) for i in input().split()]
N = int(input())
a = inpl()
b = {a[i]: i for i in range(N)}

left = list(range(N+2))
right = list(range(N+2))

ans = 0
for i in range(N,0,-1):
    x = b[i]
    ans += i*(right[x]-x +1)*(x-left[x] +1)
    right[left[x] - 1] = right[x]
    left[right[x] + 1] = left[x]
print(ans)
### BUGGY CODE ###

# https://atcoder.jp/contests/abc138/tasks/abc138_d
# 下に数を最初に合計してから深さ優先探索なり、幅優先探索なりで下にカウンターを伝播させていけば良い。
# 累積和の木構造バージョン


import sys
read = sys.stdin.readline


def read_ints():
    return list(map(int, read().split()))


def read_col(H, n_cols):
    '''
    H is number of rows
    n_cols is number of cols

    A列、B列が与えられるようなとき
    '''
    ret = [[] for _ in range(n_cols)]
    for _ in range(H):
        tmp = list(map(int, read().split()))
        for col in range(n_cols):
            ret[col].append(tmp[col])

    return ret


# 再帰の上限を緩和する(引数は適当)
import sys
sys.setrecursionlimit(1 << 25)
from collections import defaultdict

N, Q = read_ints()
child = defaultdict(lambda: [])  # ノード0は存在しない
score = [0] * (N + 1)
for _ in range(N - 1):
    a, b = read_ints()
    child[a].append(b)
    child[b].append(a)
for _ in range(Q):
    p, x = read_ints()
    score[p] += x

# 木を走査しながらscoreを合計していく
ans = [0] * (N + 1)


def dfs(p, u, s):  # ノードuの親pにおけるスコアs
    s += score[u]
    ans[u] = s
    for c in child[u]:
        if p == c:
            continue
        dfs(u, c, s)


dfs(-1, 1, 0)
print(*ans[1:])


### FIXED CODE ###

# https://atcoder.jp/contests/abc138/tasks/abc138_d
# 下に数を最初に合計してから深さ優先探索なり、幅優先探索なりで下にカウンターを伝播させていけば良い。
# 累積和の木構造バージョン


import sys
read = sys.stdin.readline


def read_ints():
    return list(map(int, read().split()))


def read_col(H, n_cols):
    '''
    H is number of rows
    n_cols is number of cols

    A列、B列が与えられるようなとき
    '''
    ret = [[] for _ in range(n_cols)]
    for _ in range(H):
        tmp = list(map(int, read().split()))
        for col in range(n_cols):
            ret[col].append(tmp[col])

    return ret


# 再帰の上限を緩和する(引数は適当)
import sys
sys.setrecursionlimit(1 << 25)
from collections import defaultdict

N, Q = read_ints()
child = defaultdict(lambda: [])  # ノード0は存在しない
score = [0] * (N + 1)
for _ in range(N - 1):
    a, b = read_ints()
    child[a].append(b)
    child[b].append(a)
for _ in range(Q):
    p, x = read_ints()
    score[p] += x

# 木を走査しながらscoreを合計していく
ans = [0] * (N + 1)


def dfs(p, u, s):  # ノードuの親pにおけるスコアs
    s += score[u]
    ans[u] = s
    for c in child[u]:
        if p == c:
            continue
        dfs(u, c, s)


dfs(-1, 1, 0)
print(*ans[1:])
### BUGGY CODE ###

K=int(input())
import math
sum=0
for i in range(1,K+1):
    for j in range(1,K+1):
        for k in range(1,K+1):
            sum+=math.gcd(math.gcd(i,j),k)
print(sum)

### FIXED CODE ###

K=int(input())
from math import gcd
sum=0
for i in range(1,K+1):
    for j in range(1,K+1):
        for k in range(1,K+1):
            sum+=gcd(gcd(i,j),k)
print(sum)
### BUGGY CODE ###

n = int(input())
a = [0] * (n+1)
for i in range(n):
    a[i+1] = tuple(map(int, input().split()))
todo = [0] * (n+1)
days = 0
finish = 0
while True:
    update = []
    for i in range(1, n+1):
        if todo[i] < n - 1 and i not in update:
            p = a[i][todo[i]]
            if a[p][todo[p]] == i and p not in update:
                update.append(i)
                update.append(p)
                todo[i] += 1
                todo[p] += 1
                if todo[i] == n-1:
                    finish += 1
                if todo[p] == n-1:
                    finish += 1
    days += 1
    #print(todo)
    if update == []:
        days = -1
        break
    elif finish == n:
        break
print(days)

### FIXED CODE ###

n = int(input())
a = []
for _ in range(n+1):
    a.append([-1])
for i in range(n):
    inp = list(map(int, input().split()))
    for j in range(n-2, -1, -1):
        a[i+1].append(inp[j])
matched = [i for i in range(1, n+1)]
finish = 0
days = 0
while True:
    used = set()
    while matched != []:
        i = matched.pop()
        p = a[i][-1]
        if p != -1 and a[p][-1] == i and (i not in used) and (p not in used) :
            a[i].pop()
            a[p].pop()
            used.add(i)
            used.add(p)
            if a[i][-1] == -1:
                finish += 1
            if a[p][-1] == -1:
                finish += 1
    days += 1
    matched = list(used)
    if len(used) == 0:
        days = -1
        break
    elif finish == n:
        break
print(days)
### BUGGY CODE ###

n, k = map(int, input().split())
A = list(map(int, input().split()))
doubleA = {}
doubleA[1] = A
for i in range(2, 73):
    doubleA[i] = {}
    for j in range(n):
        doubleA[i][j] = doubleA[i-1][doubleA[i-1][j]-1]
now = 1 
for i in range(len(bin(k))-2):
    if (k>>i)&1:
        now = doubleA[i+1][now-1]
print(now)

### FIXED CODE ###

n, k = map(int, input().split())
A = list(map(int, input().split()))
now = 1
 
for i in range(len(bin(k))-2):
    if (k>>i)&1:
        now = A[now-1]
    A = [A[a-1] for a in A]
print(now)
### BUGGY CODE ###

import itertools
import collections
import numpy as np

N=int(input())
S=list(input())
answer=0
col = collections.Counter(S)
values, counts = zip(*col.most_common())

for i in range(N):
    C=list(itertools.combinations(counts, i+1))
    kumiawase=[np.prod(j) for j in C]
    answer=(answer+sum(kumiawase))%(7+10**9)
print(answer)

### FIXED CODE ###

N=list(range(int(input())))
S=list(input())
S=sorted(S)
answer=0

prev=S[0]
counts = []
counter=0

for k in S:
    if k==prev:
        counter+=1
    else:
        prev=k
        if counter!=0:
            counts.append(1+counter)
        counter=1
if counter!=0:
    counts.append(1+counter)

def soujou(li):
    atai=1
    for j in li:
        atai=j*atai
    return atai

answer=soujou(counts)-1
print(answer%(7+10**9))
### BUGGY CODE ###

import sys

#@profile
def max_heapify(A, i):
    j = i
    largest = i
    H = len(A) -1
    while True:
        l = j * 2
        r = l + 1
        if l <= H and A[l] > A[j]:
            largest = l
        if r <= H and A[r] > A[largest]:
            largest = r
        if largest != j:
            A[j], A[largest] = A[largest], A[j]
            #max_heapify(A, largest)
            j = largest
            
        else:
            break
        

#@profile
def build_max_heap(A):
    for i in range(len(A)-1 // 2, 0, -1):
        max_heapify(A, i)

#@profile
def extract(A):
    print(A[1])
    A[1] = A[-1]
    del A[-1]
    max_heapify(A, 1)
    
A = [0]

#@profile
def main():
    for l in sys.stdin.readlines():
        if l[0] == "i":
            #insert k
            A.append(int(l[7:]))
            build_max_heap(A)
        #print(A)
        elif l[1] == "n":
            #end
            #print(out, end = "")
            return
        else:
            if len(A) <= 1:
                pass
            elif len(A) == 2:
                print(A.pop())
            #extract(A)
            else:
                print(A[1])
                A[1] = A.pop()
                max_heapify(A, 1)
                
if __name__ == "__main__":
    main()

### FIXED CODE ###

import sys

#@profile
def max_heapify(A, i):
    j = i
    largest = i
    H = len(A) -1
    while True:
        l = j * 2
        r = l + 1
        if l <= H and A[l] > A[j]:
            largest = l
        if r <= H and A[r] > A[largest]:
            largest = r
        if largest != j:
            A[j], A[largest] = A[largest], A[j]
            #max_heapify(A, largest)
            j = largest
            
        else:
            break
        

#@profile
def build_max_heap(A):
    i = len(A)-1
    last = A[i]
    parent = i//2
    while  parent > 0 and A[parent] < last:
        A[i] = A[parent]
        i = parent
        parent = i //2
    A[i] = last

#@profile
def extract(A):
    print(A[1])
    A[1] = A[-1]
    del A[-1]
    max_heapify(A, 1)
    
A = [0]

#@profile
def main():
    out = ""
    for l in sys.stdin.readlines():
        if l[0] == "i":
            #insert k
            A.append(int(l[7:]))
            build_max_heap(A)
        #print(A)
        elif l[1] == "n":
            #end
            print(out, end = "")
            return
        else:
            if len(A) <= 1:
                pass
            elif len(A) == 2:
                out += str(A.pop()) + "\n"
                #print(A.pop())
            #extract(A)
            else:
                out += str(A[1]) + "\n"
                A[1] = A.pop()
                max_heapify(A, 1)
                
if __name__ == "__main__":
    main()
### BUGGY CODE ###

n = int(input())
S = list(map(int, input().split()))
b=[]
if len(S)%2==0:
    for i in range(n):
        if i%2==0:
            b.append(S[i])
        else:
            b.insert(0, S[i])
else:
    for i in range(n):
        if i%2!=0:
            b.append(S[i])
        else:
            b.insert(0, S[i])
print(*b, sep=" ")

### FIXED CODE ###

n = int(input())
S = list(map(int, input().split()))
S=S[::-1]
x=S[::2]
y=S[1::2]
b=x+y[::-1]
print(*b, sep=" ")
### BUGGY CODE ###

N, K = map(int, input().split())
mod = 10**9+7

cnt = [0] * (K+1)
ans = 0
for i in range(1, K+1):
    f = i - cnt[i]
    ans = (ans + f * (K//i)**N) % mod
    for j in range(2*i, K+1, i):
        cnt[j] += f
print(ans)



### FIXED CODE ###

N, K = map(int, input().split())
mod = 10**9+7

cnt = [0] * (K+1)
ans = 0
for i in range(1, K+1):
    f = i - cnt[i]
    ans = (ans + f * pow(K//i, N, mod)) % mod
    for j in range(2*i, K+1, i):
        cnt[j] += f
print(ans)
### BUGGY CODE ###

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

unique_S_lis = list(set(S_lis))
res = []
for unique_str in unique_S_lis:
    res.append(S_lis.count(unique_str))

maxind = [i for i, x in enumerate(res) if x == max(res)]
lis_ans = sorted([unique_S_lis[i] for i in maxind])

for ans in lis_ans:
    print(ans)

### FIXED CODE ###

N = int(input())
S_lis = []
for _ in range(N):
    S_lis.append(input())


S_set = set(S_lis)
S_dict = dict()
# dict initialize
for s in S_set:
    S_dict[s] = 0
# valが全文字通過していくときに辞書のカウントを+1
for val in S_lis:
    S_dict[val] += 1
max_num = max(S_dict.values())
ans = list()
for k, v in S_dict.items():
    if v == max_num:
        ans.append(k)
ans = sorted(ans)
for res in ans:
    print(res)
### BUGGY CODE ###

s=input()
k=int(input())
n=len(s)
chars=[i for i in set(s)]
chars.sort() 
i=0 
l=[]
cnt=0 
while i<len(chars): 
    #temp=[]
    for ind in range(n): 
        if s[ind]==chars[i]:
            curr=''
            for j in range(ind,n):
                curr+=s[j]
                if curr not in l:
                    l.append(curr)
                    cnt+=1 
    if cnt>k:
        break 
    i+=1 
l.sort()
#print(l)
print(l[k-1])

### FIXED CODE ###

s=input()
k=int(input())
n=len(s)
l=set()
for i in range(n):
    curr=''
    for j in range(i,min(i+7,n)):
        curr+=s[j]
        l.add(curr)
l=[i for i in l]
l.sort()
#print(l)
print(l[k-1])
### BUGGY CODE ###

k,s=map(int,input().split())
c=0
for x in range(k+1):
  for y in range(k+1):
    for z in range(k+1):
      if x+y+z==s: c+=1
      if x+y+z>s: break
print(c)

### FIXED CODE ###

k,s=map(int,input().split())
c=0
for i in range(k+1):
  for j in range(min(k,s-i)+1):
    if s-i-j<=k:c+=1
print(c)
### BUGGY CODE ###

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


C = A
for i in range(A+1,B+1):
    C = C ^ i

print(C)

### FIXED CODE ###

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

def f(x):
    if x % 4 == 0:
        return x ^ 0
    elif x % 4 == 1:
        return 1
    elif x % 4 == 2:
        return 1 ^ x
    else:
        return 0


if A==0:
    print(f(B))
else:
    print(f(A-1) ^ f(B))
### BUGGY CODE ###

N, M = map(int,input().split()) # 複数の数字を変数に格納
List = [list(map(int,input().split())) for i in range(N)] # [[1,2],[3,4],[5,6]]

List.sort(key=lambda x: x[1], reverse=True)
List_M = [0]*(M+1)
result = 0

for i in range(N):
    p = 0
    A = List[i][0]
    B = List[i][1]
    while (A+p) < (M+1):
        if List_M[A+p] == 0:
            List_M[A+p] = B
            result += B
            break
        else:
            p += 1
    
print(result)

### FIXED CODE ###

from operator import itemgetter
import sys
input = sys.stdin.readline

N, M = map(int,input().split()) # 複数の数字を変数に格納
List = [list(map(int,input().split())) for i in range(N)] # [[1,2],[3,4],[5,6]]

List.sort(key=itemgetter(0))
List_S = [0]
 
result = 0
p = 0

for i in range(1, M+1):
    add = 0
    add_list = []
    while p < N and List[p][0] == i:
        if List_S[len(List_S)-1] < List[p][1]:            
            List_S.append(List[p][1])
        else:
            add_list.append(List[p][1])
            add += 1
        p += 1
            
    if len(List_S) != 1:
        result += List_S.pop()
        if add > 0:
            List_S.extend(add_list)
            List_S.sort()
 
print(result)
### BUGGY CODE ###

#! -*- coding:utf-8 -*-
n = int(input())
a = map(int,input().split())
a = list(a)
x = []

count = 0
for i in range(n):
    if count % 2 == 1:
        x.append(a[i])
    else:
        x.insert(0,a[i])

    count += 1

if n % 2 == 0:
    x.reverse()
    for i in range(n-1):
        print(x[i],end = ' ')
    print(x[-1])
else:
    for i in range(n-1):
        print(x[i],end = ' ')
    print(x[-1])


### FIXED CODE ###

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

b = [0] * n
center = n // 2
for i in range(n):
    if i % 2 == 0:
        b[center + (i//2)] = arr[i]
    else:
        b[center - ((i+1)//2)] = arr[i]

if n % 2 == 0:
    pass
else:
    b.reverse()

for i in range(n-1):
    print(b[i], end = ' ')
print(b[-1])