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

N=int(input())
out=0
def make_divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]
for i in range(1,N+1):
    out+=len(make_divisors(i))*i
print(out)

### FIXED CODE ###

N=int(input())
out=0
for X in range(1,N+1):
    Y=N//X
    out+=Y*(Y+1)*X/2
print(int(out))
### BUGGY CODE ###

N = int(input())
A = [int(x) for x in input().split()]
buf = 1
for i in A :
    buf = buf * i

if buf <= 10 ** (18) :
    print(buf)
else :
    print("-1")


### FIXED CODE ###

import numpy as np
N = int(input())
buf = list(map(int,input().split()))
cnt = 1
flag = True
for i in range(N) :
    if buf[i] == 0 :
        print(0)
        exit()
for i in range(N) :
    cnt = cnt * buf[i]
    if cnt > 10 ** 18 :
        flag = False
        break

if flag == True :
    print(cnt)
else :
    print("-1")
### BUGGY CODE ###

from collections import defaultdict
s = input()
d = defaultdict(int)
d[0] = 1
for i in range(len(s))[::-1]: d[int(s[i:])%2019] += 1
ans = 0
for v in d.values():ans += v*(v-1)//2
print(ans)

### FIXED CODE ###

from collections import defaultdict
s = input()
mod = 2019
dct = defaultdict(int)
dct[0] = 1
x = 0
d = 1
for c in s[::-1]:
    x = (x+int(c)*d)%mod
    d = d*10%mod
    dct[x] += 1
ans = 0
for v in dct.values():ans += v*(v-1)//2
print(ans)
### BUGGY CODE ###

import sys


def solve():
    readline = sys.stdin.buffer.readline
    mod = 10 ** 9 + 7
    n, k = list(map(int, readline().split()))
    a = list(map(int, readline().split()))
    a.sort()
    f = list(map(int, readline().split()))
    f.sort(reverse=True)

    cor_v = 10 ** 22
    inc_v = -1
    while cor_v - inc_v > 1:
        bin_v = (cor_v + inc_v) // 2
        cost = 0
        #条件を満たすcostを全検索
        for i in range(n):
            if a[i] * f[i] >= bin_v:
                cost += ((a[i] * f[i]) - bin_v + f[i] - 1) // f[i]
            if cost > k:
                break
        #costが制約を満たすか
        if cost <= k:
            cor_v = bin_v
        else:
            inc_v = bin_v
    print(cor_v)


if __name__ == '__main__':
    solve()


### FIXED CODE ###

import sys


def solve():
    input = sys.stdin.readline
    mod = 10 ** 9 + 7
    n, k = list(map(int, input().rstrip('\n').split()))
    a = list(map(int, input().rstrip('\n').split()))
    f = list(map(int, input().rstrip('\n').split()))
    a.sort()
    f.sort(reverse=True)
    left = -1
    right = 10 ** 13
    while right - left > 1:
        mid = (left + right) // 2
        count = 0
        for av, fv in zip(a, f):
            count += max(0, av - (mid // fv))
        if count <= k:
            right = mid
        else:
            left = mid
    print(right)


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

N=int(input())
ans=0
for i in range(N):
    ans+=i
print(ans)

### FIXED CODE ###

N=int(input())
print(N*(N-1)//2)
### BUGGY CODE ###

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

from itertools import *
from sys import *

def solve(n,w):
  lp,lw = [],[]
  for i in xrange(n):
    s = map(int, raw_input().split(","))
    lp.append(s[0])
    lw.append(s[1])
  mp = mw = 0
  for e in product([0,1],repeat=n):
    cw = sum([ lw[i] for i in range(len(e)) if e[i] ])
    cp = sum([ lp[i] for i in range(len(e)) if e[i] ])
    
    if cp == mp and mw > cw: mw = cw
    if w >= cw and cp > mp: mp = cp; mw = cw
  print mp
  print mw

case = 0
while True:
  case += 1
  w = int(raw_input())
  if w == 0: break
  n = int(raw_input())
  print "Case %d:" % (case)
  solve(n,w)

### FIXED CODE ###

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

from itertools import *
from sys import *

def solve(n,w):
  lp,lw = [],[]
  for i in xrange(n):
    s = map(int, raw_input().split(","))
    lp.append(s[0])
    lw.append(s[1])
  c = [-1]*(w+1)
  c[0] = 0
  for i in xrange(n):
    for j in reversed(xrange(w)):
      if c[j] == -1 or j+lw[i] > w : continue
      c[j+lw[i]] = max( c[j]+lp[i], c[j+lw[i]] )
  print max(c)
  print c.index(max(c))

case = 1
while True:
  w = int(raw_input())
  if w == 0: break
  n = int(raw_input())
  print "Case %d:" % (case)
  solve(n,w)
  case += 1
### BUGGY CODE ###

N,K=map(int,input().split())
A=list(map(int,input().split()))
t=1
for i in range(K):
    t*=A[i]
for i in range(K,N):
    p=t
    t//=A[i-K]
    t*=A[i]
    if p<t:
        print('Yes')
    else:
        print('No')

### FIXED CODE ###

N,K=map(int,input().split())
A=list(map(int,input().split()))
for i in range(K,N):
    if A[i-K]<A[i]:
        print('Yes')
    else:
        print('No')
### BUGGY CODE ###

#### import ####
import sys
import math
from collections import defaultdict

#### 設定 ####
sys.setrecursionlimit(10**7)

#### 定数 ####
mod = 10**9 + 7

#### 読み込み ####
def I(): return int(input())
def II(): return map(int, input().split())
def III(): return list(map(int, input().split()))
def Line(N):
  read_all = [tuple(map(int, input().split())) for _ in range(N)]
  return map(list,zip(*read_all))

#################

from decimal import Decimal

import numpy as np
S = str(input())
N = len(S)
A = np.matrix([[0]*N for _ in range(N)])
for i in range(N):
  if S[i]=='R':
    A[i,i+1] = 1
  else:
    A[i,i-1] = 1

x = np.array([1]*N) * np.linalg.matrix_power(A,10**100)
a = []
for i in range(N):
  a.append(x[0,i])
print(*a)

### FIXED CODE ###

#### import ####
import sys
import math
from collections import defaultdict

#### 設定 ####
sys.setrecursionlimit(10**7)

#### 定数 ####
mod = 10**9 + 7

#### 読み込み ####
def I(): return int(input())
def II(): return map(int, input().split())
def III(): return list(map(int, input().split()))
def Line(N):
  read_all = [tuple(map(int, input().split())) for _ in range(N)]
  return map(list,zip(*read_all))

#################

S = str(input())
n = len(S)
ans = [0]*n

left = 0
while left<=n-1:
  R_pos = n-1
  for i in range(left,n):
    if S[i]=='L':
      R_pos = i-1
      L_pos = i
      break
  if R_pos == n-1:
    ans[R_pos] += R_pos-left + 1
    break
  right = n-1
  for j in range(i+1,n):
    if S[j] == 'R':
      right = j-1
      break
  ans[R_pos] += (R_pos-left)//2 + (right-R_pos)//2 + 1
  ans[L_pos] += (L_pos-left)//2 + (right-L_pos)//2 + 1
  if right == n-1:
    break
  left = j

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

def main():
    n = int(input())
    a = list(map(int,input().split()))
    b = list(map(int,input().split()))

    num = 0
    ab = []
    ba = []
    for i in range(3):
        if a[i]-b[i] < 0:
            ab.append([a[i],b[i]])  
        elif a[i]-b[i] > 0:
            ba.append([a[i],b[i]])

    dp = [i for i in range(n+1)]
    if len(ab) > 0:
        for i in range(n+1):
            for x,y in ab:
                if i >= x:
                    dp[i] = max(dp[i],dp[i-x]+y)
    p = max(n,dp[n])

    dp2 = [i for i in range(p+1)]
    if len(ba) > 0:
        for i in range(p+1):
            for y,x in ba:
                if i >= x:
                    dp2[i] = max(dp2[i],dp2[i-x]+y)
    print(dp2[-1])
if __name__ == '__main__':
    main()

### FIXED CODE ###

def main():
    n = int(input())
    a = list(map(int,input().split()))
    b = list(map(int,input().split()))

    ab = []
    ba = []
    for i in range(3):
        if a[i]-b[i] < 0:
            ab.append((a[i],b[i]))
        elif a[i]-b[i] > 0:
            ba.append((a[i],b[i]))

    dp = [0]*(n+1)
    if len(ab) > 0:
        for i in range(n+1):
            dp[i] = i
            for x,y in ab:
                if i >= x:
                    dp[i] = max(dp[i],dp[i-x]+y)
    p = max(n,dp[n])

    dp2 = [0]*(p+1)

    if len(ba) > 0:
        for i in range(p+1):
            dp2[i] = i
            for y,x in ba:
                if i >= x:
                    dp2[i] = max(dp2[i],dp2[i-x]+y)
    print(max(p,dp2[-1]))
if __name__ == '__main__':
    main()
### BUGGY CODE ###

N = int(input())
A = [list(map(int, input().split())) for i in range(N)]

# Warshall-Floyd法
dist = [list(A[i]) for i in range(N)]
via = [[None for i in range(N)] for j in range(N)]
for k in range(N):
    for i in range(N):
        for j in range(N):
            d = dist[i][k] + dist[k][j]
            if dist[i][j] >= d:
                dist[i][j] = d
                if i != k and j != k:
                    via[i][j] = k

ans = 0
for i in range(N):
    for j in range(i):
        if dist[i][j] < A[i][j]:
            ans = -1
            break

        if via[i][j] == None:
            ans += dist[i][j]

    if ans == -1:
        break

print(ans)


### FIXED CODE ###

N = int(input())
A = [list(map(int, input().split())) for i in range(N)]

INF = 10 ** 9 + 1
for i in range(N):
    A[i][i] = INF

ans = 0
for i in range(N):
    Ai = A[i]
    for j in range(i):
        d = min(map(sum, zip(Ai, A[j])))

        if A[i][j] > d:
            print('-1')
            exit()
        elif A[i][j] < d:
            ans += A[i][j]

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

import math

n = int(input())
x = list(map(int, input().split()))
d = [x[i+1] - x[i] for i in range(n - 1)]
 
fact_n_1 = math.factorial(n-1)

e = [None] * (n-1)
for i in range(n-1):
  if i == 0:
    e[i] = fact_n_1
  else:
    e[i] = e[i - 1] + fact_n_1 // (i + 1)

print(sum(e_i * d_i % 1000000007
          for i, (d_i, e_i) 
          in enumerate(zip(d, e))) % 1000000007 ) 

### FIXED CODE ###

import sys
sys.setrecursionlimit(1000000)

n = int(input())
x = list(map(int, input().split()))
d = [x[i+1] - x[i] for i in range(n - 1)]

def pow(x, y):
    if y == 0:
        return 1
    ans = 1
    while y > 1:
        if y % 2 != 0:
            ans *= x
            ans %= 1000000007
        x *= x
        x %= 1000000007
        y //= 2
    return ans * x % 1000000007

def fact(m):
  return m * fact(m-1) % 1000000007 if m != 1 else 1
 
fact_n_1 = fact(n-1)

e = [None] * (n-1)
for i in range(n-1):
  if i == 0:
    e[i] = fact_n_1
  else:
    e[i] = (e[i - 1] + fact_n_1 * pow(i + 1, 1000000005)) % 1000000007

print(sum(e_i * d_i % 1000000007
          for i, (d_i, e_i) 
          in enumerate(zip(d, e))) % 1000000007 )
### BUGGY CODE ###

#!/usr/bin/env python3

import sys
import math
from bisect import bisect_right as br
from bisect import bisect_left as bl
sys.setrecursionlimit(2147483647)
from heapq import heappush, heappop,heappushpop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
from itertools import permutations
mod = 998244353
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

n, s = LI()
a = LI()

dp = [[0]*(s+1) for _ in range(n+1)]
dp[0][0] = 0
for i in range(1, n+1):
    x = a[i-1]
    for j in range(s+1):
        if j == 0:
            dp[i][j] += dp[i-1][j] + 1
            dp[i][j] %= mod
        elif dp[i-1][j]:
            dp[i][j] += dp[i-1][j] * 2
            dp[i][j] %= mod
    for j in range(s+1):
        if j - x < 0:
            continue
        if j - x == 0:
            dp[i][j] += pow(2, dp[i-1][j-x])
            dp[i][j] %= mod
        elif dp[i-1][j-x]:
            dp[i][j] += dp[i-1][j-x]
            dp[i][j] %= mod

print(dp[-1][-1])


### FIXED CODE ###

#!/usr/bin/env python3

import sys
import math
from bisect import bisect_right as br
from bisect import bisect_left as bl
sys.setrecursionlimit(2147483647)
from heapq import heappush, heappop,heappushpop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
from itertools import permutations
mod = 998244353
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

n, s = LI()
a = LI()

dp = [[0]*(s+1) for _ in range(n+1)]
dp[0][0] = 0
for i in range(1, n+1):
    x = a[i-1]
    for j in range(s+1):
        if j == 0:
            dp[i][j] += dp[i-1][j] + 1
            dp[i][j] %= mod
        elif dp[i-1][j]:
            dp[i][j] += dp[i-1][j] * 2
            dp[i][j] %= mod
        if j - x < 0:
            continue
        if j - x == 0:
            dp[i][j] += pow(2, dp[i-1][j-x], mod)
            dp[i][j] %= mod
        elif dp[i-1][j-x]:
            dp[i][j] += dp[i-1][j-x]
            dp[i][j] %= mod
print(dp[-1][-1])
### BUGGY CODE ###

h, w = map(int, input().split())
data = []
for i in range(h):
    s = input()
    data.append(s)
cnt_l, cnt_r, cnt_u, cnt_d = [[0] * w for _ in range(h)], [[0] * w for _ in range(h)], [[0] * w for _ in range(h)], [[0] * w for _ in range(h)]

for i in range(h):
    for j in range(w):
        if data[i][j] == "#":
            cnt_l[i][j] = 0
        else:
            cnt_l[i][j] = cnt_l[i][j - 1] + 1
    
    for j in range(w - 1, -1, -1):
        if data[i][j] == "#":
            cnt_r[i][j] = 0
        else:
            if j == w - 1:
                cnt_r[i][j] = 1
            else:
                cnt_r[i][j] = cnt_r[i][j + 1] + 1

for j in range(w):
    for i in range(h):
        if data[i][j] == "#":
            cnt_u[i][j] = 0
        else:
            cnt_u[i][j] = cnt_u[i - 1][j] + 1
    
    for i in range(h - 1, -1, -1):
        if data[i][j] == "#":
            cnt_d[i][j] = 0
        else:
            if i == h - 1:
                cnt_d[i][j] = 1
            else:
                cnt_d[i][j] = cnt_d[i + 1][j] + 1
cnt = [[0] * w for _ in range(h)]

ans = 0
for i in range(h):
    for j in range(w):
        cnt[i][j] = cnt_l[i][j] + cnt_r[i][j] + cnt_u[i][j] + cnt_d[i][j] - 3
        ans = max(ans, max(cnt[i]))

print(ans)

### FIXED CODE ###

h, w = map(int, input().split())
data = [list(input()) for _ in range(h)]

cnt_l, cnt_r, cnt_u, cnt_d = [[0] * w for _ in range(h)], [[0] * w for _ in range(h)], [[0] * w for _ in range(h)], [[0] * w for _ in range(h)]

for i in range(h):
    for j in range(w):
        if data[i][j] == "#":
            cnt_l[i][j] = 0
        else:
            cnt_l[i][j] = cnt_l[i][j - 1] + 1
    
        if data[i][w - j - 1] == "#":
            cnt_r[i][w - j - 1] = 0
        else:
            if j == 0:
                cnt_r[i][w - j - 1] = 1
            else:
                cnt_r[i][w - j - 1] = cnt_r[i][w - j] + 1

for j in range(w):
    for i in range(h):
        if data[i][j] == "#":
            cnt_u[i][j] = 0
        else:
            cnt_u[i][j] = cnt_u[i - 1][j] + 1

        if data[h - i - 1][j] == "#":
            cnt_d[h - i - 1][j] = 0
        else:
            if i == 0:
                cnt_d[h - i - 1][j] = 1
            else:
                cnt_d[h - i - 1][j] = cnt_d[h - i][j] + 1

ans = 0
for i in range(h):
    for j in range(w):
        total= cnt_l[i][j] + cnt_r[i][j] + cnt_u[i][j] + cnt_d[i][j] - 3
        ans = max(ans, total)

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

def dp_fn():
  N, W = map(int, input().split())
  WV = (map(int, input().split()) for _ in range(N))
  
  DP = {0:0}
  
  for w, v in WV:
    for i in reversed(list(DP.keys())):
      if i + w <= W:
        DP[i+w] = max(DP[i] + v, DP[i])
  return max(DP.values())
  
print(dp_fn())


### FIXED CODE ###

import sys
input = sys.stdin.readline

def dp_fn():
  N, W = map(int, input().split())
  WV = (map(int, input().split()) for _ in range(N))
  
  DP = {0:0}
  
  for w, v in WV:
    keys = sorted(DP.keys(), reverse=True)
    for i in keys:
      j = DP[i]
      if j+w <= W:
        if i+v in DP:
          DP[i+v] = min(DP[i+v], j+w)
        else:
          DP[i+v] = j+w
  return max(DP.keys())
  
print(dp_fn())
### BUGGY CODE ###

from collections import deque

n,x = map(int, input().split())
a = list(map(int, input().split()))

def slide(a, k):
  q = deque()
  ans = 0
  for i in range(-k,0):
    while q and a[q[-1]] > a[i]: q.pop()
    q.append(i)
  for i in range(n):
    if q[0] <= i-k: q.popleft()
    while q and a[q[-1]] > a[i]: q.pop()
    q.append(i)
    ans += a[q[0]]
  return ans

print(min(slide(a,k+1) + x*k for k in range(n)))

### FIXED CODE ###

n,x = map(int, input().split())
a = list(map(int, input().split()))
cost = a[:]
use = [i for i in range(n)]
ans = sum(a)
for k in range(1,n):
  for i in range(n):
    j = (i-k)%n
    if cost[i] > a[j]:
      cost[i] = a[j]
      use[i] = j
  cur = k*x + sum(cost)
  if ans > cur:
    ans = cur
print(ans)
### BUGGY CODE ###

import numpy as np

# Calculate intensity
N, K = [int(v) for v in input().split(" ")]
A_arr = np.array([int(v) for v in input().split(" ")])
step = np.arange(len(A_arr))
if K > N//2+11:
  print(" ".join([str(N)]*N))
  exit()

def get_Intensity(A_arr):
  inten = np.zeros(len(A_arr))
  for i in range(len(A_arr)):
    isLuminated = np.abs(step - i) < A_arr
    inten[i] = np.sum(isLuminated)
  return inten
Intensity = A_arr
for i in range(K):
  Intensity = get_Intensity(Intensity+1)
  if np.sum(Intensity) == N**2:
    break
print(" ".join([str(v) for v in Intensity.astype(int)]))


### FIXED CODE ###

import numpy as np
 
N, K = map(int, input().split(' '))
A = tuple(map(int, input().split(' ')))
indexes = np.arange(0, N)
 
dp = np.zeros(shape=N + 1, dtype=np.int64)
 
for k in range(K):
    np.add.at(dp, np.maximum(0, indexes - A), 1)
    np.add.at(dp, np.minimum(N, indexes + A + 1), -1)
    A = dp.cumsum()[:-1]
    if np.all(A == N):
        break
    dp *= 0
 
print(' '.join(map(str, A)))
### BUGGY CODE ###

def main():
    n,q = map(int,input().split())
    node = [[]for _ in range(n)]
    looked = [1]*n
    for i in range(n-1):
        a,b = map(int,input().split())
        node[b-1].append(a-1)
        node[a-1].append(b-1)
    counter = [0]*n
    for i in range(q):
        p,x = map(int,input().split())
        counter[p-1] += x
    queue = [0]
    looked[0] = 0
    while(queue):
        now = queue.pop(0)
        for i in node[now]:
            if looked[i]:
                queue.append(i)
                counter[i] += counter[now]
                looked[i] = 0
    print(*counter)
main()

### FIXED CODE ###

from collections import deque
def main():
    n,q = map(int,input().split())
    node = [[]for _ in range(n)]
    looked = [1]*n
    for i in range(n-1):
        a,b = map(int,input().split())
        node[b-1].append(a-1)
        node[a-1].append(b-1)
    counter = [0]*n
    for i in range(q):
        p,x = map(int,input().split())
        counter[p-1] += x
    queue = deque([0])
    looked[0] = 0
    while(queue):
        now = queue.pop()
        for i in node[now]:
            if looked[i]:
                queue.append(i)
                counter[i] += counter[now]
                looked[i] = 0
    print(*counter)
main()
### BUGGY CODE ###

def digit(N,n):#nは正の整数、N進法での桁数、許容は１０＾１０００
    if n<N:
        return 1
    else:
        return 1+digit(N,n//N)

def Nbasenumber(N,m):#N>1,mは正の整数、N進法表記、出力は数、許容はN＾１０００
    if  m<N:
        return m
    else:
        k=digit(N,m)#digitとの併用を忘れないこと
        i=m//(N**(k-1))
        return i*(10**(k-1))+Nbasenumber(N,m%(N**(k-1)))

def digitsum(n):#nは正の整数、各位の和、許容は１０＾１０００
    if n<10:
        return n
    else:
        m=n//10
        return n%10+digitsum(m)

def main():
    N=int(input())
    A=[0]*N
    shougen=[[] for i in range(0,N)]
    for i in range(0,N):
        A[i]=int(input())
        for j in range(0,A[i]):
            a,b=map(int,input().split())
            shougen[i].append([a,b])
    m=0
    for i in range(0,2**N):
        flag=0
        check=[]
        for j in range(0,N):
            if i>>j & 1==1:
                check.extend(shougen[j])#証言の収集
        for j in range(0,N):
            if ([j+1,0] in check) or ([j+1,1] in check):
                if [j+1,0] in check:
                    if j==0:
                        data=['0']
                    else:
                        data.append('0')
                if [j+1,1] in check:
                    if j==0:
                        data=['1']
                    else:
                        data.append('1')

            else:
                if j==0:
                    data=['A']
                else:
                    data.append('A')#証言から得られる正直者リスト
        for j in range(0,N):
            if data[j]!='A':
                if int(data[j])!=(i>>j)%2 :
                    flag=1
        if len(data)!=N:
            flag=1
        if flag==0:
            test=digitsum(Nbasenumber(2,i))
            if test>m:
                m=test

    print(m)

if __name__ == '__main__':
    main()

### FIXED CODE ###

N=int(input())
shougen=[(0,0) for i in range(0,N)]
for i in range(0,N):
    A=int(input())
    honest=0
    unkind=0
    for j in range(0,A):
        x,y=map(int,input().split())
        if y==0:
            unkind+=2**(x-1)
        else:
            honest+=2**(x-1)
    shougen[i]=(honest,unkind)

ans=0
for i in range(0,2**N):
    honest=i
    unkind=2**N-1-i
    check=True
    test=0
    for j in range(0,N):
        if (i>>j)&1 ==1:
            test+=1
            x,y=shougen[j]
            if (honest-x)^x!=honest or (unkind-y)^y!=unkind:
                check=False
    if check:
        if test>ans:
            ans=test

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

import numpy as np

L, R = map(int, input().split())

L_list = []
for i in range(L, R):
    L_list.append(i)

R_list = []
for i in range(L + 1, R + 1):
    R_list.append(i)

ans = []
for l in np.array(L_list):
    ans.append((l * np.array(R_list) % 2019).min())
    
print(min(ans))

### FIXED CODE ###

l, r = map(int, input().split())

ans = float('inf')
for i in range(l, min(r, l + 2019)):
    for j in range(i + 1, min(r + 1, l + 2019 + 1)):
        x = i * j % 2019
        ans = min(ans, x)
        
print(ans)
### BUGGY CODE ###

import numpy as np
N = int(input())
h_array = np.array(list(map(int, input().split()))).reshape(-1)


def cost_diff(num, span, given_array):
    diff_val = np.abs(given_array[num] - given_array[num - span])
    return diff_val


dp = [[] for i in range(N)]
diff_ini = cost_diff(1, 1, h_array)

for i in range(N):
    if i == 0:
        dp[0].append(0)
    elif i == 1:
        dp[1].append(dp[0][0] + diff_ini)
    else:
        for v in dp[i - 1]:
            dp[i].append(v + cost_diff(i, 1, h_array))

        for v in dp[i - 2]:
            dp[i].append(v + cost_diff(i, 2, h_array))

print(min(dp[N - 1]))


### FIXED CODE ###

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

dp = [10 ** 5 for i in range(N)]

for i in range(N):
    if i == 0:
        dp[0] = 0
    elif i == 1:
        dp[1] = dp[0] + abs(h_array[1] - h_array[0])
    else:
        dp[i] = min(dp[i - 1] + abs(h_array[i] - h_array[i - 1]), dp[i - 2] + abs(h_array[i] - h_array[i - 2]))
print(dp[N - 1])
### BUGGY CODE ###

n = int(input())
ans = 0
flag = 0
c = 0

for i in range(1,n):
    flag = 0
    c = 0
    for j in range(1,i+1):
        if i % j == 0:
            if i / j == j:
                c *= 2
                c += 1
                ans += c
                break
            if j == flag:
                c *= 2
                ans += c
                break
            flag = j
            c += 1
    else:
        ans += c
        
print(ans)

### FIXED CODE ###

import collections

zzz = 1
nn = int(input())
ans = 0

def prime_factorize(n):
    a = []
    while n % 2 == 0:
        a.append(2)
        n //= 2
    f = 3
    while f * f <= n:
        if n % f == 0:
            a.append(f)
            n //= f
        else:
            f += 2
    if n != 1:
        a.append(n)
    return a

for i in range(1,nn):
    zzz = 1
    cc = collections.Counter(prime_factorize(i))
    hoge = cc.values()
    for aaa in hoge:
        zzz *= aaa + 1
    ans += zzz
   
print(ans)
### BUGGY CODE ###

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


e=[(x+1)/2 for x in p]

tmp=0
for i in range(K,N+1):
	tmp=max(sum(e[i-K:i]),tmp)

print(tmp)	




### FIXED CODE ###

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


e=[(x+1)/2 for x in p]

tmp=sum(e[0:K])
ans=tmp
for i in range(K,N):
	tmp+=e[i]-e[i-K]
	ans=max(ans,tmp)

print(ans)