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

s=list(map(int,list(input())[::-1]))
n=len(s)
cnt=[0]*(n+1)
cnt[0]=s[0]%2019
c=s[0]
for i in range(1,n):
  c+=s[i]*(10**i)
  cnt[i]=c%2019
d={}
for i in cnt:
  if i in d:
    d[i]+=1
  else:
    d[i]=1
ans=0
for i in d.values():
  ans+=i*(i-1)//2
print(ans)

### FIXED CODE ###

s=list(map(int,list(input())[::-1]))
n=len(s)
cnt=[0]*2019
cnt[0]+=1
c=0
for i in range(n):
  c+=s[i]*pow(10,i,2019)%2019
  cnt[c%2019]+=1
ans=0
for i in cnt:
  if i<=1:
    pass
  else:
    ans+=i*(i-1)//2
print(ans)
### BUGGY CODE ###

import sys
input = sys.stdin.readline

N = int(input())
A = [list(map(int, input().split()))[::-1] for _ in range(N)]

ans = 0
match = N*(N-1)//2
player = set(range(N))
seen = [False]*N

while True:
    update = False
    checked = seen[::]
    ans += 1

    for x in player:
        if checked[x] or not A[x]:
            continue
        y = A[x][-1] - 1
        if A[y][-1]-1 == x and not checked[y]:
            A[x].pop()
            A[y].pop()
            checked[x] = True
            checked[y] = True
            update = True
            match -= 1

    if match <= 0:
        break

    if not update:
        ans = -1
        break

print(ans)


### FIXED CODE ###

import sys
input = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 7)

N = int(input())
pair = N * (N - 1) // 2
ptoi = dict()

i = 0
for x in range(1, N):
    for y in range(x + 1, N + 1):
        ptoi[(x, y)] = i
        ptoi[(y, x)] = i
        i += 1

edge = [[] for _ in range(pair)]
indeg = [0] * pair
for i in range(1, N+1):
    inp = list(map(int, input().split()))
    for s, t in zip(inp[:-1], inp[1:]):
        edge[ptoi[(i, s)]].append(ptoi[(i, t)])
        indeg[ptoi[(i, t)]] += 1


now = [i for i, d in enumerate(indeg) if d == 0]
day = 0
while now:
    nxt = []
    while now:
        s = now.pop()
        for t in edge[s]:
            if indeg[t] <= 0:
                continue
            indeg[t] -= 1
            if indeg[t] == 0:
                nxt.append(t)
    day += 1
    now = nxt

if all(i <= 0 for i in indeg):
    print(day)
else:
    print(-1)
### BUGGY CODE ###

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

seq = []

if s[0] == '1':
    seq.append(0)

prev = s[0]
i = 0
while i < n:
    f = True
    for j in range(i+1, n):
        if s[j] != prev:
            seq.append(j-i)
            f = False
            prev = s[j]
            break
    if f:
        i += 1
    else:
        i = j

last_length = 1
prev = s[-1]
for i, c in enumerate(s[::-1][1:]):
    if c != prev:
        last_length += i
        break
seq += [last_length]

ans = 0
for i in range(n):
    if i % 2 == 0:
        # print(seq[i:i+2*k])
        ans = max(ans, sum(seq[i:i+2*k]))
    else:
        # print(seq[i:i+2*k])
        ans = max(ans, sum(seq[i:i+2*k+1]))

print(ans)

### FIXED CODE ###

import itertools

n, k = map(int,input().split())
s = input()
seq = []

if s[0] == '0':
    seq.append(0)

i = 1
seq_cnt = 1
while i != n:
    if s[i] != s[i-1]:
        seq.append(seq_cnt)
        seq_cnt = 1
    else:
        seq_cnt += 1
    i += 1

seq.append(seq_cnt)
if s[-1] == '0':
    seq.append(0)

b = [0] + list(itertools.accumulate(seq))

ans = 0
for left in range(0, len(b), 2):
    right = left + 2*k + 1
    if right >= len(b):
        right = len(b)-1

    ans = max(ans, b[right] - b[left])

print(ans)
### BUGGY CODE ###

re = list()
a,b,k = map(int, raw_input().split())
li = [i for i in xrange(a,b+1)]
re += li[:k]
li.sort(reverse=True)
re += li[:k]
for i in sorted(list(set(re))):
    print i


### FIXED CODE ###

a,b,k = map(int, raw_input().split())
li = [i for i in xrange(a,b+1)] if (b-a+1)/2 < float(k) else [i for i in xrange(a,a+k)]+[i for i in xrange(b-k+1,b+1)]
for i in sorted(list(set(li))):
    print i
### BUGGY CODE ###

import sys
input = sys.stdin.buffer.readline
N,M = list(map(int,input().split()))
p = [i-1 for i in map(int,input().split())]
alr = [False for i in range(N)]
xy = [[] for i in range(N)]
for i in range(M):
    x,y = map(int,input().split())
    x -= 1
    y -= 1
    xy[x].append(y)
    xy[y].append(x)
count = 0

for i in range(N):
    if (not alr[i]) and (xy[i]):
        alr[i] = True
        stack = [i]
        indlist = set()
        indlist.add(p.index(i))
        numlist = set()
        numlist.add(i)
        while stack:
            j = stack.pop()
            for k in xy[j]:
                if not alr[k]:
                    alr[k] = True
                    stack.append(k)
                    numlist.add(k)
                    indlist.add(p.index(k))
        count += len(numlist & indlist)
    else:
        if (not alr[i]) and p[i] == i:
            count += 1
print(count)
                
    
        

### FIXED CODE ###

import sys
input = sys.stdin.buffer.readline
N,M = list(map(int,input().split()))
p = [i-1 for i in map(int,input().split())]
alr = [False for i in range(N)]
xy = [[] for i in range(N)]
for i in range(M):
    x,y = map(int,input().split())
    x -= 1
    y -= 1
    xy[x].append(y)
    xy[y].append(x)
count = 0

for i in range(N):
    if (not alr[i]) and (xy[i]):
        alr[i] = True
        stack = [i]
        numlist = set()
        numlist.add(i)
        while stack:
            j = stack.pop()
            for k in xy[j]:
                if not alr[k]:
                    alr[k] = True
                    stack.append(k)
                    numlist.add(k)
        indlist = set([p[i] for i in numlist])
        count += len(numlist & indlist)
    else:
        if (not alr[i]) and p[i] == i:
            count += 1
print(count)
### BUGGY CODE ###

s = input()
t = input()

pos = [0]*len(t)
for i, c in enumerate(t):
    ind = [ii for ii, v in enumerate(s) if v == c]
    if not ind:
        print(-1)
        exit()
    pos[i] = ind

lens = len(s)
last = pos[0][0]
res = last + 1
addval = 0
for vals in pos[1:]:
    for i, val in enumerate(vals):
        if last < val:
            addval = val - last
            res += addval
            last = val
            break
        else:
            if i==len(vals)-1:
                addval = (lens - last - 1) + (val + 1)
                res += addval
                last = val
                break
            else:
                continue

print(res)


### FIXED CODE ###

import collections
import bisect
s = input()
t = input()

dict_pos = collections.defaultdict(list) # dict of index 
for i, ch in enumerate(s, 1): 
    dict_pos[ch].append(i)

count_loop = 0
last_pos = -1
for ch in t:
    list_pos = dict_pos[ch]
    if len(list_pos) == 0:
        print(-1)
        quit()
    if list_pos[-1] <= last_pos:
        last_pos = list_pos[0]
        count_loop += 1
    else:
        last_pos = list_pos[bisect.bisect_right(list_pos, last_pos)]

print(count_loop * len(s) + last_pos)
### BUGGY CODE ###

import sys
# input = sys.stdin.readline()
N = int(input())
A = list(map(int,input().split()))
sum_r = 0
# print(A[0::2])
# print(A[1::2])
sum_odd = 0
sum_even = 0
for i in range(N):
    a = A[i]
    sum_r += a
    if i % 2 == 0:
        sum_odd += a
    else:
        sum_even += a

ans = ''
rolling_even = sum_even 
rolling_odd = sum_odd - A[0]
#print(sum_r,sum_even)
ans += str(sum_r - 2 * rolling_even) + ' ' + str(sum_r - 2 * rolling_odd)
sys.stdout.write(ans + ' ')
mepo = A[1]
mope = A[0]
for i in range(2,N):
    tmp = sum_r

    if i % 2 == 0:
        # rolling_even += A[(i-2)%N] - A[(i-1)%N]
        mepo = A[(i-1)]
        rolling_even += mope - mepo
        tmp = sum_r - 2 * rolling_even
    else:
        mope = A[(i-1)]
        rolling_odd += mepo - mope
        tmp = sum_r - 2 * rolling_odd
    sys.stdout.write(' '+str(tmp))
    ans += ' ' + str(tmp)
sys.stdout.write('\n')




### FIXED CODE ###

import sys
# input = sys.stdin.readline()
N = int(input())
A = list(map(int,input().split()))
sum_r = 0
# print(A[0::2])
# print(A[1::2])
sum_odd = 0
sum_even = 0
for i in range(N):
    a = A[i]
    sum_r += a
    if i % 2 == 0:
        sum_odd += a
    else:
        sum_even += a

ans = ''
rolling_even = sum_even 
rolling_odd = sum_odd - A[0]
#print(sum_r,sum_even)
X_i = sum(A) - 2 * sum(A[1::2])
sys.stdout.write(str(X_i))
for i in range(N-1):
    X_i_plus_1 = 2 * A[i] - X_i
    sys.stdout.write(' ' + str(X_i_plus_1))
    X_i = X_i_plus_1
# ans += str(sum_r - 2 * rolling_even) + ' ' + str(sum_r - 2 * rolling_odd)
# sys.stdout.write(ans + ' ')
# mepo = A[1]
# mope = A[0]
# for i in range(2,N):
#     tmp = sum_r

#     if i % 2 == 0:
#         # rolling_even += A[(i-2)%N] - A[(i-1)%N]
#         mepo = A[(i-1)]
#         rolling_even += mope - mepo
#         tmp = sum_r - 2 * rolling_even
#     else:
#         mope = A[(i-1)]
#         rolling_odd += mepo - mope
#         tmp = sum_r - 2 * rolling_odd
#     sys.stdout.write(' '+str(tmp))
#     ans += ' ' + str(tmp)
# sys.stdout.write('\n')
### BUGGY CODE ###

n = int(input())
numbers = tuple(map(int, input().split(' ')))

mul = 1
for n in numbers:
    mul *= n

if mul > 10 ** 18:
    print(-1)
else:
    print(mul)


### FIXED CODE ###

int(input())
numbers = tuple(map(int, input().split(' ')))

if 0 in numbers:
    print(0)
else:
    mul = 1
    for n in numbers:
        mul *= n
        if mul > 10 ** 18:
            print(-1)
            break
    else:
        print(mul)
### BUGGY CODE ###

H, W, M = [int(i) for i in input().split()]
Bh = [0]*H
Bw = [0]*W
BB = [[0 for j in range(W)] for i in range(H)]


for _ in range(M):
    h, w = map(int, input().split())
    Bh[h-1] += 1
    Bw[w-1] += 1
    BB[h-1][w-1] = 1

ans = 0
Mh = max(Bh)
Mw = max(Bw)
for i in [i for i, x in enumerate(Bh) if x == Mh]:
    for j in [j for j, x in enumerate(Bw) if x == Mw]:
        ans = max(ans, Mh+Mw-BB[i][j])
print(ans)


### FIXED CODE ###

import itertools
H, W, M = map(int, input().split())
Bh = [0]*(H+1)
Bw = [0]*(W+1)
OD = set()

for _ in range(M):
    h, w = map(int, input().split())
    Bh[h] += 1
    Bw[w] += 1
    OD.add((h, w))

M1 = max(Bh)
M2 = max(Bw)
l1 = [i for i, x in enumerate(Bh) if x == M1]
l2 = [j for j, x in enumerate(Bw) if x == M2]
for i, j in itertools.product(l1, l2):
    if (i, j) not in OD:
        break
else:
    print(M1+M2-1)
    exit()
print(M1+M2)
### BUGGY CODE ###

raw_input = input()
length = len(raw_input)
input_number = int(raw_input)
count = 0

top_lane = input().split()
mid_lane = input().split()
bot_lane = input().split()

for i in range(input_number):
    top_lane[i] = int(top_lane[i])
    mid_lane[i] = int(mid_lane[i])
    bot_lane[i] = int(bot_lane[i])

top_lane.sort()
mid_lane.sort()
bot_lane.sort()

for i in range(input_number):
    top = top_lane[i]
    for j in range(input_number):
        mid = mid_lane[len(mid_lane) - j - 1]
        if top < mid:
            for k in range(input_number):
                bot = bot_lane[len(bot_lane) - k - 1]
                if mid < bot:
                    count += 1
                else:
                    break
        else:
            break

print(count)


### FIXED CODE ###

import bisect

raw_input = input()
input_number = int(raw_input)
counts = 0

top_lane = input().split()
mid_lane = input().split()
bot_lane = input().split()

for i in range(input_number):
    top_lane[i] = int(top_lane[i])
    mid_lane[i] = int(mid_lane[i])
    bot_lane[i] = int(bot_lane[i])

top_lane.sort()
mid_lane.sort()
bot_lane.sort()

for mid in mid_lane:
    top_index = bisect.bisect_left(top_lane, mid)
    bot_index = input_number - bisect.bisect_right(bot_lane, mid)
    counts += top_index * bot_index

print(counts)
### BUGGY CODE ###

n = int(input())

num_list = []
for i in range(n):
    a = int(input())
    if a in num_list:
        num_list.remove(a)
    else:
        num_list.append(a)

print(len(num_list))

### FIXED CODE ###

n = int(input())

num_list = []
for i in range(n):
    a = int(input())
    num_list.append(a)

num_list.sort()
num_list2 = []
i = 0
while i < n:
    if i == n-1:
        num_list2.append(num_list[i])
        break
    elif num_list[i] == num_list[i+1]:
        i += 2
    else:
        num_list2.append(num_list[i])
        i += 1


print(len(num_list2))
### BUGGY CODE ###

N = int(input())
A = list(map(int,input().split()))
for i in range(N):
    print(A.count(i + 1))


### FIXED CODE ###

from collections import Counter
N = int(input())
A = list(map(int,input().split()))
c = Counter(A)
for i in range(N): print(c[i + 1])
### BUGGY CODE ###

n,k,q = [int(i) for i in str(input()).split(' ')]
a = [int(input()) for i in range(q)]

b = [k] * n
for i in range(q):
  b = list(map(lambda x: x - 1, b))
  b[a[i] - 1] += 1

for i in range(n):
  if b[i] > 0:
    print("Yes")
  else:
    print("No")

### FIXED CODE ###

n,k,q = [int(i) for i in str(input()).split(' ')]
a = [int(input()) for i in range(q)]

b = [k - q] * n
for i in range(q):
  #b = list(map(lambda x: x - 1, b))
  b[a[i] - 1] += 1

for i in range(n):
  if b[i] > 0:
    print("Yes")
  else:
    print("No")
### BUGGY CODE ###

#B問題
N = int(input())
S = [list(str(input())) for i in range(N)]

A = 0
B = 0
T = [[0 for i in range(N)] for j in range(N)]
ans = 0
for i in range(N):
    A+=1
    for j in range(N):
        for k in range(N):
            s = S[j][k]
            T[(j+A)%N][k] = s
            
    flag = 0
    for j in range(N):
        for k in range(N):
            if T[j][k] != T[k][j]:
                flag = 1
    if flag == 0:
        ans+=1
        
print(ans*N)

### FIXED CODE ###

#B問題
N = int(input())
S = [list(str(input())) for i in range(N)]

A = 0
B = 0

ans = 0
for i in range(N):
    A = i
    flag = 0
    for j in range(N):
        for k in range(N):
            if S[(j+A)%N][k] != S[(k+A)%N][j]:
                flag = 1
    
    if flag == 0:
        ans+=1
        
print(ans*N)
### BUGGY CODE ###

#coding:utf-8

def main():
    h, n = map(int, input().split())
    ab = []
    for _ in range(n):
        ab.append(list(map(int, input().split())))
    
    inf = 100000000000
    # indexがモンスターに与えたダメージで、中身がトキのダメージ
    damages = [inf for _ in range(100000)]
    damages[0] = 0
    pre_damage = -1
    for i in range(h):
        if damages[i] == inf:
            continue
        for j in range(n):
            new_damage = ab[j][0]
            if damages[i + new_damage] > damages[i] + ab[j][1]:
                damages[i + new_damage] = damages[i] + ab[j][1]
        

    print(min(damages[h:]))
main()

### FIXED CODE ###

#coding:utf-8

def main():
    h, n = map(int, input().split())
    ab = []
    for _ in range(n):
        ab.append(list(map(int, input().split())))
    
    inf = 100000000000
    # indexがモンスターに与えたダメージで、中身がトキのダメージ
    damages = [0] + [inf] * h
    for i in range(1, h + 1):
        for j in range(n):
            damage_monster = ab[j][0]
            damage_toki = ab[j][1]
            
            damages[i] = min(damages[max(0, i - damage_monster)] + damage_toki, damages[i])


    print(min(damages[h:]))
main()
### BUGGY CODE ###

from collections import defaultdict, deque
s, t = [x.strip() for x in open(0).readlines()]
if set(t) - set(s) != set():
    print(-1)
else:
    d = defaultdict(deque)
    n = len(s)
    for i, c in enumerate(s, 1):
        d[c].append(i)
    ans = 0
    for c in t:
        while True:
            i = d[c].popleft()
            d[c].append(i + n)
            if ans < i:
                ans = i
                break
    print(ans)

### FIXED CODE ###

from collections import defaultdict
import bisect
s, t = [x.strip() for x in open(0).readlines()]
if set(t) - set(s) != set():
    print(-1)
else:
    d = defaultdict(list)
    n = len(s)
    for i, c in enumerate(s, 1):
        d[c].append(i)
    for k in d:
        d[k].append(d[k][0] + n)
    ans = 0
    for c in t:
        q, r = divmod(ans, n)
        x = d[c][bisect.bisect(d[c], r)]
        ans = n*q + x
    print(ans)
### BUGGY CODE ###

def LI():
  return list(map(int,input().split()))
  
n,k=LI()
a=LI()

fir=1
for i in range(k):
    fir*=a[i]

# print(fir)

for i in range(k,n):
    sec=fir*a[i]
    sec=sec//a[i-k]
    if sec>fir:
        print("Yes")
    else:
        print("No")
    fir=sec
    # print(sec)

### FIXED CODE ###

def LI():
  return list(map(int,input().split()))
  
n,k=LI()
a=LI()

for i in range(n-k):
    if a[i]<a[i+k]:
        print("Yes")
    else:
        print("No")
### BUGGY CODE ###

from collections import Counter
 
def verify_anagrams(first_word, second_word):
    def get_counter(s):
        return Counter(s.upper().replace(' ', ''))
 
    return get_counter(first_word) == get_counter(second_word)

n = int(input())
s = []
for i in range(n):
    s.append(input())

ans = 0
for i in range(n):
    for j in range(i+1, n):
        if verify_anagrams(s[i], s[j]):
            ans += 1

print(ans)

### FIXED CODE ###

n = int(input())
lst = []
dic = {}
for i in range(n):
    s = list(input())
    s.sort()
    s = ''.join(s)
    if s not in dic.keys():
        dic[s] = 1
    else:
        dic[s] += 1

ans = 0
for i in dic.values():
    ans += i * (i-1) // 2

print(ans)
### BUGGY CODE ###

n, x, y = map(int, input().split())
dist = [[0] * (n+1) for _ in range(n+1)]


def calc_dist(i, j):
    return min(j-i, abs(i-x)+1+abs(j-y))
    # if j <= x or y <= i:
    #     return j - i
    # elif x < i < j < y:
    #     return min(j - i, (i - x) + 1 + (j - y))
    # elif x < i < y:
    #     return min(j - i, (i - x) + 1 + (j - y))
    # elif x < j < y:
    #     return min(j - i, (x - i) + 1 + (y - j))
    # else:
    #     print("{} {} {} {}".format(i, j, x, y))
    #     raise RuntimeError



for i in range(1, n+1):
    for j in range(i+1, n+1):
        dist[i][calc_dist(i, j)] += 1

for k in range(1, n):
    ans = 0
    for node in range(1, n+1):
        ans += dist[node][k]
    print(ans)

### FIXED CODE ###

import sys

def main():
    input = sys.stdin.readline
    n, x, y = map(int, input().strip().split())
    dist = [[0] * (n+1) for _ in range(n+1)]

    def calc_dist(i, j):
        return min(j-i, abs(i-x)+1+abs(j-y))

    for i in range(1, n+1):
        for j in range(i+1, n+1):
            dist[i][calc_dist(i, j)] += 1

    for k in range(1, n):
        ans = 0
        for node in range(1, n+1):
            ans += dist[node][k]
        print(ans)


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

N, M = list(map(int, input().split()))
a, b = [0 for _ in range(N)], [0 for _ in range(N)]
for i in range(N):
    a[i], b[i] = (list(map(int, input().split())))
for i in range(1, len(a)):
    j = i - 1
    ele1 = a[i]
    ele2 = b[i]
    while a[j] > ele1 and j >= 0:
        a[j+1] = a[j]
        b[j+1] = b[j]
        j -= 1
    a[j+1] = ele1
    b[j+1] = ele2
money=0
for i in range(N):
    money+=a[i]*b[i]
    M-=b[i]
    if M <= 0:
        break
if M == 0:
    print(money)
else:
    print(money + (a[i] * M))

### FIXED CODE ###

N, M = map(int, input().split())
a, b = [0 for _ in range(N)], [0 for _ in range(N)]
for i in range(N):
    a[i], b[i] = (list(map(int, input().split())))
c = []
for i in range(N):
    c.append([a[i],b[i],i])
c = sorted(c, key=lambda x: x[0])
m = 0
cnt = 0
for i in range(N):
    
    cnt += c[i][1]
    m += c[i][0] * c[i][1]
     
    if cnt == M:
        print(m)
        break
    elif cnt > M:
        print(m - c[i][0] * (cnt - M))
        break
    else:
        continue
### BUGGY CODE ###

n,k = map(int, input().split())
A = list(map(int, input().split()))
now = 1
f = 0
past = [0]*n
if n>k:
	for i in range(k):
		now = A[now-1]
	print(now)
	exit()
c = 0
for i in range(n):
	past[c] = now
	now = A[now-1]
	c+=1
	if now in past:
		f = 1
		break


loop_end = c
loop_start = past.index(now)
#print(past, now, loop_end, loop_start)
res = (k-loop_start)%(loop_end-loop_start)
now = past[loop_start]
for i in range(res):
	now = A[now-1]
print(now)


### FIXED CODE ###

n,k = map(int, input().split())
b = list(map(int, input().split()))
a=0
for i in range(n):
    b[i] -= 1
if k<n:
    for i in range(k):
        a = b[a]
    print(a+1)
    exit()
c = [-1]*n
cc = 0
se = set()
while a not in se:
    c[a] = cc
    cc += 1
    se.add(a)
    a = b[a]
for i in range((k-c[a])%(cc-c[a])):
    a = b[a]
print(a+1)
### BUGGY CODE ###

a, b, c, x, y = map(int, input().split())
d = x * 2
e = y * 2

num = int(a * x + b * y)
count = 0
for i in range(x + 1):
	for j in range(y + 1):
		k = 0
		m = d - 2 * i
		n = e - 2 * j
		if m >= n:
			k = m
		else:
			k = n
		count = int(i * a + j * b + k * c)
		if num > count:
			num = count

print(num)

### FIXED CODE ###

a, b, c, x, y = map(int, input().split())
count = 0

if x >= y:
	i = a * (x - y) + c * y * 2
	j = a * x + b * y
	k = c * x * 2
	if i >= j and k >= j:
		count = j
	elif i >= k and j >= k:
		count = k
	elif j >= i and k >= i:
		count = i
else:
	i = b * (y - x) + c * x * 2
	j = a * x + b * y
	k = c * y * 2
	if i >= j and k >= j:
		count = j
	elif i >= k and j >= k:
		count = k
	elif j >= i and k >= i:
		count = i

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

N = int(input())
A = list(map(int,input().split()))
ans = 0
a = 0
for l in range(N):
    a = A[l]
    x = A[l]
    for j in range(l+1,N):
        a += A[j]
        x = x ^ A[j]
        if a == x:
            ans += 1
print(ans + N)


### FIXED CODE ###

N = int(input())
A = list(map(int,input().split()))
ans = 0
num = 0
a = 0
x = 0
k = 0
for l in range(N):
    for j in range(k,N):
        a += A[j]
        x =  x ^ A[j]
        if a  != x:
            ans += j - l
            k = j
            x = x ^ A[l] ^ A[j]
            a = a - A[l] - A[j]
            break
        elif j == N-1:
            ans += N-l
            k = j
            x = x ^ A[l] ^ A[j]
            a = a - A[l] - A[j]
print(ans )
### BUGGY CODE ###

a,b,c,d=map(int,input().split())
count=0
for i in range(a,b+1):
  if i%c!=0 and i%d!=0:
    count+=1
print(count)

### FIXED CODE ###

import fractions
a,b,c,d=map(int,input().split())
l=c*d//fractions.gcd(c,d)
B=b//c+b//d-b//l
A=(a-1)//c+(a-1)//d-(a-1)//l
print((b-B)-(a-1-A))
### BUGGY CODE ###

import numpy as np


def read_input(trans=int):
    return list(map(trans, input().split()))


N, K = read_input()
A = np.array(read_input(), dtype="int")
B = np.zeros(N, dtype="int")
coordinate = np.arange(1, N+1)

limit_count = np.log10(N)
for j in range(K):
    for i in range(N):
        c = coordinate[i]
        B[i] = (A >= np.abs(coordinate - c)).sum()
    A = B.copy()

    if j > limit_count:
        break


print(" ".join(map(str, A.tolist())))


### FIXED CODE ###

def read_input(trans=int):
    return list(map(trans, input().split()))


N, K = read_input()
A = read_input()
K = min(K, 41)

for _ in range(K):
    B = [0]*N
    for i in range(N):
        start = max(i-A[i], 0)
        end = min(i+A[i], N-1)

        B[start] += 1
        if end+1 < N:
            B[end+1] -= 1
    for i in range(1, N):
        B[i] += B[i-1]
    A = B.copy()


print(" ".join(map(str, A)))
### BUGGY CODE ###

n, k = map(int, input().split())
if n==k or k==1:
  print(0)
else:
  ans=n
  res=[]
  while(1):
    ans=abs(ans-k)
    if ans in res:
      break
    res.append(ans)
  print(min(res))

### FIXED CODE ###

n, k = map(int, input().split())
print(min(n%k, k - n%k))
### BUGGY CODE ###

import math
from functools import reduce

def gcd(*numbers):
    return reduce(math.gcd, numbers)

def gcd_list(numbers):
    return reduce(math.gcd, numbers)

k = int(input())
ans = 0

for a in range(1,k+1):
    for b in range(1,k+1):
        num = gcd(a,b)
        for c in range(1,k+1):
            ans += gcd(num,c)

print(ans)


### FIXED CODE ###

import math
from functools import reduce

def gcd(*numbers):
    return reduce(math.gcd, numbers)

def gcd_list(numbers):
    return reduce(math.gcd, numbers)

k = int(input())
num = k+2
lst = [([None]*num) for i in range(num)]
# print(lst)
for i in range(num):
    for j in range(num):
        lst[i][j] = gcd(i+1,j+1)
# print(lst)

ans = 0
for a in range(1,k+1):
    for b in range(1,k+1):
        NUM = lst[a-1][b-1]
        for c in range(1,k+1):
            ans += lst[NUM-1][c-1]

print(ans)