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

from heapq import heappush, heappop, heapify

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

# N jewels in dequeue D
# at most K operations
# 1 <= N <= 50
# 1 <= K <= 100
# -10000000 <= Vi <= 10000000

# Operation A, B: Remove left or right
# Operation C, D: Add to left or right

S = 0
for take in range(K + 1):
    for takeL in range(take + 1):
        for takeR in range(take - takeL + 1):
            hand = []
            for i in range(takeL):
                if i >= len(V):
                    break
                heappush(hand, V[i])
            for i in range(takeR):
                if N - i - 1 < takeL:
                    break
                heappush(hand, V[N- i - 1])
            S = max(sum(hand), S)
            for _ in range(K - take):
                if not hand or hand[0] >= 0:
                    break
                heappop(hand)
                S = max(sum(hand), S)
print(S)



### FIXED CODE ###

from heapq import heappush, heappop, heapify

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

# N jewels in dequeue D
# at most K operations
# 1 <= N <= 50
# 1 <= K <= 100
# -10000000 <= Vi <= 10000000

# Operation A, B: Remove left or right
# Operation C, D: Add to left or right

S = 0
for take in range(min(N, K) + 1):
    for takeL in range(take + 1):
        for takeR in range(take - takeL + 1):
            hand = []
            for i in range(takeL):
                heappush(hand, V[i])
            for i in range(takeR):
                if N - i - 1 < takeL:
                    break
                heappush(hand, V[N- i - 1])
            S = max(sum(hand), S)
            for _ in range(K - take):
                if not hand or hand[0] >= 0:
                    break
                heappop(hand)
                S = max(sum(hand), S)
print(S)
### BUGGY CODE ###

h,w = map(int,input().split())
list1 = []
list2 = []

for i in range(w):
  list2.append([])

for i in range(h):
  s = input()
  list1.append(s)
  for j in range(w):
    list2[j].append(s[j])

list3 = []
for i in range(h):
  list3.append([])
  
list4 = []
for i in range(w):
  list4.append([])

for i in range(h):
  tmp_list = list1[i].split('#')
  for tmp in tmp_list:
    leng = len(tmp)
    list3[i].extend([leng]*leng)
    list3[i].append(0)
    
for i in range(w):
  tmp_list = (''.join(list2[i])).split('#')
  for tmp in tmp_list:
    leng = len(tmp)
    list4[i].extend([leng]*leng)
    list4[i].append(0)
    
max_num = -1
for i in range(w):
  for j in range(h):
    list3[j][i] += list4[i][j]-1
    max_num = max(max_num, list3[j][i])
    
print(max_num)

### FIXED CODE ###

h,w = map(int,input().split())
list1 = []
list2 = []
 
for i in range(w):
  list2.append([])
 
for i in range(h):
  s = input()
  list1.append(s)
  for j in range(w):
    list2[j].append(s[j])
 
list3 = []
for i in range(h):
  list3.append([])
  
list4 = []
for i in range(w):
  list4.append([])
 
for i in range(h):
  tmp_list = list1[i].split('#')
  for tmp in tmp_list:
    leng = len(tmp)
    list3[i].extend([leng]*leng)
    list3[i].append(0)
    
for i in range(w):
  tmp_list = (''.join(list2[i])).split('#')
  for tmp in tmp_list:
    leng = len(tmp)
    list4[i].extend([leng]*leng)
    list4[i].append(0)
    
max_num = -1
for i in range(w):
  for j in range(h):
    list3[j][i] += list4[i][j]-1
    max_num = max(max_num, list3[j][i])
    
print(max_num)
### BUGGY CODE ###

import collections


n = int(raw_input())
hs = map(int, raw_input().split(' '))
def f(hs):
	#print sorted([(e,i) for i,e in enumerate(hs)])
	count =0
	for i in range(len(hs)):
		for j in range(i+1, len(hs)):
			if hs[i] + hs[j] == j-i:
				count+=1
	return count
print f(hs)

### FIXED CODE ###

import collections
n = int(raw_input())
hs = map(int, raw_input().split(' '))
def f(nums):
	cc,count = collections.Counter(), 0

	#j - i = aj + ai  =>  ai + i = j - aj
	for i in range(len(nums)-1, -1, -1):
		count += cc[nums[i] + i]
		cc[i - nums[i]]+=1
	return count
		


print f(hs)
### BUGGY CODE ###

h,w = map(int,input().split())
a = ['#'*(w+2)]+['#'+input()+'#' for _ in range(h)]+['#'*(w+2)]
ans = 0
while True:
    l = []
    for i in range(1,h+1):
        for j in range(1,w+1):
            if a[i][j]=='#':
                l.append([i,j])
    if len(l)==h*w:
        break
    ans += 1
    for l_ in l:
        a[l_[0]-1] = a[l_[0]-1][:l_[1]]+'#'+a[l_[0]-1][l_[1]+1:]
        a[l_[0]] = a[l_[0]][:l_[1]-1]+'###'+a[l_[0]][l_[1]+2:]
        a[l_[0]+1] = a[l_[0]+1][:l_[1]]+'#'+a[l_[0]+1][l_[1]+1:]
print(ans)

### FIXED CODE ###

h,w = map(int,input().split())
a = [input() for _ in range(h)]
ans = 0
queue = []
for i in range(h):
    for j in range(w):
        if a[i][j]=='#':
            queue.append([i,j])
from collections import deque
queue = deque(queue)
dxy = [(0,1), (0,-1), (1,0), (-1,0)]
dp = [[10**4]*w for _ in range(h)]
for i,j in queue:
    dp[i][j] = 0
while len(queue):
    y,x = queue.popleft()
    d = dp[y][x]
    for dx,dy in dxy:
        nx, ny = x+dx, y+dy
        if not 0<=nx<=w-1:
            continue
        elif not 0<=ny<=h-1:
            continue
        elif dp[ny][nx]<=d+1:
            continue
        dp[ny][nx] = d+1
        queue.append((ny,nx))
print(max([max(dp[row]) for row in range(h)]))
### BUGGY CODE ###

import sys
def input():
	return sys.stdin.readline()[:-1]
n, l = map(int, input().split())
ss = [input() for _ in range(n)]
prefix = set()
for s in ss:
	for i in range(len(s)):
		prefix.add(s[:i+1])
grundy = 0
for p in list(prefix):
	if p[-1] == "0":
		t = p[:-1] + "1"
	else:
		t = p[:-1] + "0"
	if t not in prefix:
		grundy ^= (l-len(t)+1) & (-l+len(t)-1)

if grundy == 0:
	print("Bob")
else:
	print("Alice")

### FIXED CODE ###

import sys
#from collections import defaultdict
sys.setrecursionlimit(10**6)

def input():
	return sys.stdin.readline()[:-1]
n, l = map(int, input().split())
ss = [list(input())[::-1] for _ in range(n)]

def addTree(tree, sentence):
	if not sentence:
		return None   

	if sentence[-1] not in tree:
		tree[sentence[-1]] = {}

	p = sentence.pop()
	tree[p] = addTree(tree[p], sentence)

	return tree

def createTree(sentences):    
	tree = {}
	for sentence in sentences:
		tree = addTree(tree, sentence)

	return tree

tree = createTree(ss)
#print(tree)

grundy = 0
def dfs(cur, level):
	global grundy
	if cur is None:
		return
	elif len(cur) == 1:
		grundy ^= (l-level) & (-l+level)
	for k in cur.keys():
		dfs(cur[k], level+1)
	return
	
dfs(tree, 0)

if grundy == 0:
	print("Bob")
else:
	print("Alice")
### BUGGY CODE ###

N = int(input())
P = list(map(int, input().split()))
count = 0
for i in range(N):
    flag = True
    for n in range(i + 1):
        if P[n] < P[i]:
            flag = False
        if i == n and flag:
            count += 1
print(count)


### FIXED CODE ###

N = int(input())
P = list(map(int, input().split()))
MIN = list()
count = 0
MIN.append(P[0])
for i in range(1, N):
    MIN.append(min(MIN[i - 1], P[i]))
for i in range(0, N):
    if P[i] <= MIN[i]:
        count += 1
print(count)
### BUGGY CODE ###

# AtCoder
N, K, Q = map(int, input().split())
solved = [int(input()) for i in range(Q)]
ilst = [int(K)] * N


def calc_minus(n):
    return n - 1


for i in solved:
    ilst[i-1] += 1
    ilst = list(map(calc_minus, ilst))


for i in ilst:
    if i >= 1:
        print("Yes")
    else:
        print("No")


### FIXED CODE ###

N, K, Q = map(int, input().split())
ilst = [int(K-Q)] * N

for i in range(Q):
    inp = int(input())
    ilst[inp-1] += 1


for i in ilst:
    if i > 0:
        print("Yes")
    else:
        print("No")
### BUGGY CODE ###

n, m = map(int, input().split())

keys = []

for i in range(m):
    cost, num = map(int, input().split())
    C = list(map(int, input().split()))
    can_open = 0
    for c in C:
        can_open += 2 ** (c-1)
    keys.append([cost, can_open])

DP = {}
for i in range(2**n):
    DP[i] = float('INF')
DP[0] = 0

for cost, can_open in keys:
    for key in DP.keys():
        pre_cost = DP[key]
        next_key = key | can_open
        if next_key in DP.keys():
            DP[next_key] = min(DP[next_key], pre_cost+cost)
        else:
            DP[next_key] = pre_cost + cost

full_open = (1 << n) - 1

if DP[full_open] == float('INF'):
    print(-1)
else:
    print(DP[full_open])


### FIXED CODE ###

n, m = map(int, input().split())

keys = []

for i in range(m):
    cost, num = map(int, input().split())
    C = list(map(int, input().split()))
    can_open = 0
    for c in C:
        can_open += 2 ** (c-1)
    keys.append([cost, can_open])

DP = {}
for i in range(2**n):
    DP[i] = float('INF')
DP[0] = 0

for cost, can_open in keys:
    for key in DP.keys():
        pre_cost = DP[key]
        next_key = key | can_open
        DP[next_key] = min(DP[next_key], pre_cost+cost)


full_open = (1 << n) - 1

if DP[full_open] == float('INF'):
    print(-1)
else:
    print(DP[full_open])
### BUGGY CODE ###

x,y = map(int,input().split())
list = [input() for i in range(x)]
left = 0
right = x-1
for i in range(x):
    right = x-1
    while left < right:
        if list[right]<list[right-1]:
            escape = list[right]
            list[right] = list[right-1]
            list[right-1] = escape
        right-1
    left += 1
answer = ""
for lis in list:
    answer += lis
print(answer)


### FIXED CODE ###

num,long = map(int,input().split())
lines = [input() for i in range(num)]
lines.sort()
answer = ""
for line in lines:
    answer += line
print(answer)
### BUGGY CODE ###

n = int(input())
a = list(map(int,input().split()))
count = 0
for i in range(n):
    for j in range(n):
        if i != j and a[i]%a[j] == 0:
            break
        if j == n-1:
            count +=1
print(count)

### FIXED CODE ###

#D-Not Divisible
#pdf見た
n = int(input())
a = list(map(int,input().split()))
a = sorted(a)
maxi = a[-1]
boo = [True]*(maxi+1)

for i in range(n):
    k = a[i]
    if not boo[k]:
        continue
    if i != n-1 and k == a[i+1]:
        boo[k] = False
    for j in range(2,maxi//k+1):
        boo[k*j] = False
    
count = 0
for k in a:
    if boo[k] == True:
        count += 1

print(count)
### BUGGY CODE ###

from heapq import heapify,heappop,heappush
class mset:
    def __init__(self):
        self.p,self.q,self.dic=[],[],{}
        heapify(self.p);heapify(self.q)
    def add(self,a):
        heappush(self.p,a)
        if not a in self.dic:
            self.dic[a]=1
        else:
            self.dic[a]+=1
    def delete(self,a):
        if a in self.dic and self.dic[a]>0:
            heappush(self.q,a)
            self.dic[a]-=1
    def search(self,a):
        return a in self.dic
    def minimum(self):
        while self.q and self.p[0]==self.q[0]:
            heappop(self.p);heappop(self.q)
        return self.p[0] if self.p else None

N,Q=map(int,input().split())
event=[]
for i in range(N):
    S,T,X=map(int,input().split())
    event.append((1,S-X,X))
    event.append((0,T-X,X))
event.sort(key=lambda x:x[1])

s=mset()
now=0
for i in range(Q):
    D=int(input())
    while(now<len(event) and event[now][1]<=D):
        if event[now][0]==1:
            s.add(event[now][2])
        elif event[now][0]==0:
            s.delete(event[now][2])
        now+=1
    m=s.minimum()
    print(-1 if m==None else m)

### FIXED CODE ###

from heapq import heapify,heappop,heappush
import sys
read=sys.stdin.readline
class mset:
    def __init__(self):
        self.p,self.q=[],[]
        heapify(self.p);heapify(self.q)
    def add(self,a):
        heappush(self.p,a)
    def delete(self,a):
            heappush(self.q,a)
    def minimum(self):
        while self.q and self.p[0]==self.q[0]:
            heappop(self.p);heappop(self.q)
        return self.p[0] if self.p else None

N,Q=map(int,read().split())
event=[]
for i in range(N):
    S,T,X=map(int,read().split())
    event.append((1,S-X,X))
    event.append((0,T-X,X))

s=mset()
now=0
for i in range(Q):
    D=int(read())
    event.append((2,D,0))
event.sort(key=lambda x:(x[1],x[0]))

for c,t,w in event:
    if c==0:
        s.delete(w)
    elif c==1:
        s.add(w)
    else:
        m=s.minimum()
        print(-1 if m==None else m)
### BUGGY CODE ###

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

w = [0] * N
v = [0] * N
for i in range(N):
    w[i], v[i] = map(int, input().split())

dp = {0: 0}
for i in range(N):
    for cv, cw in list(dp.items()):
        if cw + w[i] > W:
            continue
        dp[cv + v[i]] = min(
            dp.get(cv + v[i], float('inf')),
            cw + w[i])
print(max(dp))

### FIXED CODE ###

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

w = [0] * N
v = [0] * N
for i in range(N):
    w[i], v[i] = map(int, input().split())

dp = {0: 0}
for i in range(N):
    for cw, cv in list(dp.items()):
        if cw + w[i] > W:
            continue
        dp[cw + w[i]] = max(
            dp.get(cw + w[i], 0),
            cv + v[i])
print(max(dp.values()))
### BUGGY CODE ###

def run(n, m, qq, l, r, p, q):
    cnt = []
    # lでソート済みと仮定
    # lr = []
    # for i in range(m):
    #     lr.append([l[i], r[i]])
    # print(lr)
    # sort_l = sorted(lr, key=lambda x: -x[1][0])
    # print(sort_l)
    dic = {}
    for i in range(qq):
        tmp_cnt = 0
        if (p[i], q[i]) in dic:
            cnt.append(dic[(p[i], q[i])])
        else:
            for j in range(m):
                if p[i] <= l[j] and r[j] <= q[i]:
                    tmp_cnt += 1
            cnt.append(tmp_cnt)
            dic[(p[i], q[i])] = tmp_cnt
    return cnt


def search_li(l, p):
    left = 0
    right = len(l) - 1

    while left <= right:
        mid = (left + right) // 2
        if l[mid] >= p:
            left = mid
            result = mid
        else:
            right = mid - 1
        return result


def read_line():
    n, m, qq = map(int, input().split())
    l = []
    r = []
    for i in range(m):
        tl, tr = map(int, input().split())
        l.append(tl)
        r.append(tr)
    p = []
    q = []
    for i in range(qq):
        tp, tq = map(int, input().split())
        p.append(tp)
        q.append(tq)
    return (n, m, qq, l, r, p, q)


def main():
    n, m, qq, l, r, p, q = read_line()
    ret = run(n, m, qq, l, r, p, q)
    for i in range(len(ret)):
        print(ret[i])


if __name__ == '__main__':
    main()


### FIXED CODE ###

def run(n, m, qq, l, r, p, q):
    cnt = {}
    sum = {}
    ret = []
    for i in range(n+1):
        for j in range(n+1):
            cnt[i, j] = 0
            sum[i, j] = 0
    for i in range(m):
        cnt[(l[i], r[i])] += 1
    for i in range(1, n+1):
        for j in range(1, n+1):
            sum[i, j] = cnt[i, j] + sum[i-1, j] + sum[i, j-1] - sum[i-1, j-1]
    for i in range(qq):
        ret.append(sum[q[i], q[i]] - sum[p[i]-1, q[i]] - sum[q[i], p[i]-1] + sum[p[i]-1, p[i]-1])
    return ret


def read_line():
    n, m, qq = map(int, input().split())
    l = []
    r = []
    for i in range(m):
        tl, tr = map(int, input().split())
        l.append(tl)
        r.append(tr)
    p = []
    q = []
    for i in range(qq):
        tp, tq = map(int, input().split())
        p.append(tp)
        q.append(tq)
    return (n, m, qq, l, r, p, q)


def main():
    n, m, qq, l, r, p, q = read_line()
    ret = run(n, m, qq, l, r, p, q)
    for i in range(len(ret)):
        print(ret[i])


if __name__ == '__main__':
    main()
### BUGGY CODE ###

#!/usr/bin/env python3
def main():
    n, m = map(int, input().split())

    w, v = [0] * n, [0] * n
    for i in range(n):
        w[i], v[i] = map(int, input().split())

    dp = [0] * (m + 1)
    for j in range(w[0], m + 1):
        dp[j] = v[0]

    for i in range(n - 1):
        next_dp = [0] * (m + 1)
        for j in range(m + 1):
            if j < w[i + 1]:
                next_dp[j] = dp[j]
            else:
                next_dp[j] = max(v[i + 1] + dp[j - w[i + 1]], dp[j])
        dp = next_dp

    print(dp[-1])


main()


### FIXED CODE ###

#!/usr/bin/env python3
import os
import sys
from atexit import register
from io import StringIO

sys.stdin = StringIO(os.read(0, os.fstat(0).st_size).decode())
sys.stdout = StringIO()
register(lambda: os.write(1, sys.stdout.getvalue().encode()))

input = lambda: sys.stdin.readline().rstrip('\r\n')

n, m = map(int, input().split())

w, v = [0] * n, [0] * n
for i in range(n):
    w[i], v[i] = map(int, input().split())

dp = [[0] * (m + 1) for _ in range(n)]
for j in range(w[0], m + 1):
    dp[0][j] = v[0]

for i in range(1, n):
    for j in range(m + 1):
        if j < w[i]:
            dp[i][j] = dp[i - 1][j]
        else:
            dp[i][j] = max(v[i] + dp[i - 1][j - w[i]], dp[i - 1][j])

print(dp[-1][-1])
### BUGGY CODE ###

from collections import deque

H, W = map(int, list(input().split()))
Ch, Cw = map(int, list(input().split()))
Ch -= 1
Cw -= 1
Dh, Dw = map(int, list(input().split()))
Dh -= 1
Dw -= 1
S = [list(input()) for _ in range(H)]

dh = [-1, 0, 0, 1]
dw = [0, 1, -1, 0]

seen = [[None] * W for _ in range(H)]
seen[Ch][Cw] = 0
q = deque()
q.append([Ch, Cw])

while q:
    th, tw = q.pop()
    for i in range(4):
        nh = th + dh[i]
        nw = tw + dw[i]
        if nh < 0 or nh > H - 1 or nw < 0 or nw > W - 1:
            continue
        if S[nh][nw] == '#':
            continue
        if seen[nh][nw] is not None and seen[nh][nw] <= seen[th][tw]:
            continue
        seen[nh][nw] = seen[th][tw]
        q.append([nh, nw])
    for dh2 in range(-2, 3):
        for dw2 in range(-2, 3):
            if dh2 == 0 and dw2 == 0:
                continue
            nh = th + dh2
            nw = tw + dw2
            if nh < 0 or nh > H - 1 or nw < 0 or nw > W - 1:
                continue
            if S[nh][nw] == '#':
                continue
            if seen[nh][nw] is not None and seen[nh][nw] <= seen[th][tw] + 1:
                continue
            seen[nh][nw] = seen[th][tw] + 1
            q.append([nh, nw])

if seen[Dh][Dw] is not None:
    print(seen[Dh][Dw])
else:
    print(-1)


### FIXED CODE ###

from collections import deque

H, W = map(int, input().split())
Ch, Cw = map(int, input().split())
Ch -= 1
Cw -= 1
Dh, Dw = map(int, input().split())
Dh -= 1
Dw -= 1
S = [input() for _ in range(H)]

dh = [-1, 0, 0, 1]
dw = [0, 1, -1, 0]

INF = pow(10, 10)
seen = [[INF] * W for _ in range(H)]
seen[Ch][Cw] = 0
q = deque()
q.append([Ch, Cw])

while q:
    th, tw = q.pop()
    for i in range(4):
        nh = th + dh[i]
        nw = tw + dw[i]
        if nh < 0 or nh > H - 1 or nw < 0 or nw > W - 1 or S[nh][nw] == '#' or seen[nh][nw] <= seen[th][tw]:
            continue
        seen[nh][nw] = seen[th][tw]
        q.append([nh, nw])
    for dh2 in range(-2, 3):
        for dw2 in range(-2, 3):
            if dh2 == 0 and dw2 == 0:
                continue
            nh = th + dh2
            nw = tw + dw2
            if nh < 0 or nh > H - 1 or nw < 0 or nw > W - 1 or S[nh][nw] == '#' or seen[nh][nw] <= seen[th][tw] + 1:
                continue
            seen[nh][nw] = seen[th][tw] + 1
            q.appendleft([nh, nw])

if seen[Dh][Dw] is INF:
    print(-1)
else:
    print(seen[Dh][Dw])
### BUGGY CODE ###

from scipy.special import comb
n,a,b,k=map(int,input().split())
A=0
m=998244353
for i in range(n+1):
 if (k-i*a)%b==0:A+=comb(n,i,exact=True)*comb(n,(k-i*a)//b,exact=True)%m
print(A%m)

### FIXED CODE ###

mod = 998244353
n, a, b, k = map(int, input().split())
ans = 0
def comb(n, r):
    if n < r:return 0
    if n < 0 or r < 0:return 0
    return fa[n] * fi[r] % mod * fi[n - r] % mod
fa = [1] * (n + 1)
fi = [1] * (n + 1)
for i in range(1, n + 1):
    fa[i] = fa[i - 1] * i % mod
    fi[i] = pow(fa[i], mod - 2, mod)
for i in range(n + 1):
    x = k - a * i
    if x >= 0 and x % b == 0:
        j = x // b
        if j <= n:
            ans += comb(n, i) * comb(n, j)
            ans %= mod
print(ans % mod)
### BUGGY CODE ###

def resolve():
    n = int(input())

    def count_div(num):
        count = 0
        upper = num ** 0.5
        i = 1
        while i <= upper:
            if num % i == 0:
                if i == upper:
                    count += 1
                else:
                    count += 2
            i += 1
        return count

    ans = 0
    for c in range(1, n + 1):
        ans += count_div(n - c)
    print(ans)

resolve()

### FIXED CODE ###

def resolve():
    n = int(input())

    count = 0
    a, b = 1, 1
    while a < n:
        while b < n / a:
            count += 1
            b += 1
        b = 1
        a += 1
    print(count)


if 'unittest' not in globals():
    resolve()
### BUGGY CODE ###

import numpy as np
import math
n,m = map(int,input().split())
a = list(map(int,input().split()))

for i in range(m):#チケットの数
	a[np.argmax(a)] /= 2

for i in range(len(a)):
	a[i] = math.floor(a[i])

print(sum(a))


### FIXED CODE ###

import heapq
n,m = map(int,input().split())
a = [int(i) * (-1) for i in input().split()]

heapq.heapify(a)

for _ in range(m):
	a_min = heapq.heappop(a)
	heapq.heappush(a,(-(-a_min//2)))

print(-sum(a))
### BUGGY CODE ###

import sys
input = sys.stdin.readline

k,q=map(int,input().split())
D=list(map(int,input().split()))


for query in range(q):
    n,x,m=map(int,input().split())

    D2=[d%m for d in  D]
    S=sum(D2)
    D0=D2.count(0)
    R=(n-1)//k
    ANS=R*(k-D0) - (R*S+x%m)//m 

    x2=(x+S*R)%m
    rest=n-R*k-1
    S2=sum(D2[:rest])
    DR0=D2[:rest].count(0)
    ANSR=rest - DR0 - (x2+S2)//m

    print(ANS+ANSR)

### FIXED CODE ###

import sys
input = sys.stdin.readline

k,q=map(int,input().split())
D=tuple(map(int,input().split()))

def sum_count(A):
    S=0
    C=0
    for a in A:
        if a==0:
            C+=1
        else:
            S+=a
    return S,C

for query in range(q):
    n,x,m=map(int,input().split())

    D2=[d%m for d in  D]
    S,D0=sum_count(D2)
    R=(n-1)//k
    ANS=R*(k-D0) - (R*S+x%m)//m 
    x2=(x+S*R)%m
    rest=n-R*k-1
    S2,DR0=sum_count(D2[:rest])
    ANSR=rest - DR0 - (x2+S2)//m

    print(ANS+ANSR)
### BUGGY CODE ###

import numpy as np
n=int(input())
s=[chr(i) for i in range(97, 97+26)]

a=[]    
for i in range(n):
  a0=list(input())
  an=[s.index(i)+1  for i in a0]
  a.append(an)

aa=np.array(a)
z=np.zeros((n,n))
ans=0
for i in range(n):
  for j in range(n):
    ci=[_ % n for _ in range(i,i+n)]
    cj=[_ % n for _ in range(j,j+n)]
    aa_ci=aa[ci,:]
    aa_cij=aa_ci[:,cj]
    at=aa_cij-aa_cij.T
    #print(ci)
    #print(cj)
    #print(aa_cij)
    #print(aa_cij.T)
    #print(np.diag(np.diag(at)))
    #print(at-np.diag(np.diag(at)))
    if np.allclose(at-np.diag(np.diag(at)),z):
      ans+=1 
print(ans)

### FIXED CODE ###

import numpy as np
n=int(input())
s=[chr(i) for i in range(97, 97+26)]
 
aa_cij=np.array([[s.index(i)+1  for i in list(input())] for _ in range(n)],dtype='int8')
z=np.zeros((n,n),dtype='int8')
ans=0
for i in range(n):
  aa_cij=np.concatenate( [ aa_cij[1:,:], aa_cij[[0],:] ], axis=0)
  if np.allclose(aa_cij - aa_cij.T, z ):
    ans+=1 
print(ans*n)
### BUGGY CODE ###

def inN():
    return int(input())
def inL():
    return list(map(int,input().split()))
n = inN()
a = inL()
sum = 1
for i in a:
    sum *= i
if sum <= pow(10,18):
    print(sum)
else:
    print(-1)

### FIXED CODE ###

def inN():
    return int(input())
def inL():
    return list(map(int,input().split()))
n = inN()
a = inL()
if 0 in a:
    print(0)
    exit()

sum = 1
t = pow(10,18)
for i in range(n):
    sum *= a[i]
    if sum > t:
        print(-1)
        exit()
print(sum)
### BUGGY CODE ###

# -*- coding: utf-8 -*-
A, B = map(int, input().split(' '))
ans = B
for n in range(A, B):
    ans ^= n

print(ans)


### FIXED CODE ###

# -*- coding: utf-8 -*-
A, B = map(int, input().split(' '))
# A, B = 2, 4

if A % 2 == 0:
    n = (B - A) // 2
    b = 2 * n + A

    ans = 0 if n % 2 == 0 else 1
    for i in range(b, B+1):
        ans ^= i

    # print(b)
    # print(n)
    print(ans)
else:
    a = A
    A += 1

    n = (B - A) // 2
    b = 2 * n + A

    ans = 0 if n % 2 == 0 else 1
    ans ^= a
    for i in range(b, B+1):
        ans ^= i

    # print(b)
    # print(n)
    print(ans)