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

import sys
n = int(input())
d = set()
for i in range(n):
    c = sys.stdin.readline()
    if c[0] == 'i':
        d = d|{c[7:]}
    else:
        if c[5:] in d:
            print('yes')
        else:
            print('no')

### FIXED CODE ###

import sys
input()
r = sys.stdin.readlines()
d = {}

for i in r:
    if i[0] == 'i':
        d[i[7:]] = 0
    else:
        if i[5:] in d:
            print('yes')
        else:
            print('no')
### BUGGY CODE ###

import re

s = input()
s = s[::-1]
ans = 0
if s.count('CBA') != 0:
    for i in range(s.count('A')):
        if s.find('CBA') < s.find('A'):
            a = re.search('(CB)+A', s)
            ans += (a.end()-a.start()-1)//2
        s = s.replace('A', '', 1)
print(ans)

### FIXED CODE ###

import sys
input = sys.stdin.readline

s = input()
s = s[::-1]
ans = 0
a = -1
s = (s.replace('CB', 'D').replace('C', '\t').replace('B', '\t')).split()
for i in range(len(s)):
    for j in range(s[i].count('A')):
        a = s[i].find('A',a+1)
        ans += a-j
    a = -1
print(ans)
### BUGGY CODE ###

def main():
    S = input()
    # S = "1" * 200000
    S = S[::-1]

    x = 1
    tot = 0
    cnt = [0] * 2019
    ans = 0

    for i in range(len(S)):
        # print("-----")
        # print(f"i: {i}")
        # print(f"tot: {tot}")
        # print(f"S[i]: {S[i]}")
        # print(f"x: {x}")
        # print(f"cnt: {cnt}")
        # print(f"cnt[tot]: {cnt[tot]}")
        # print(f"ans: {ans}")

        cnt[tot] += 1
        tot = (tot + (int(S[i]) * x)) % 2019
        ans += cnt[tot]
        x = x * 10
    
    # print("-----")
    # print(f"i: {i}")
    # print(f"tot: {tot}")
    # print(f"S[i]: {S[i]}")
    # print(f"x: {x}")
    # print(f"cnt: {cnt}")
    # print(f"cnt[tot]: {cnt[tot]}")
    # print(f"ans: {ans}")
    
    print(ans)


if __name__ == '__main__':
    main()

### FIXED CODE ###

def main():
    S = input()
    # S = "1" * 200000
    S = S[::-1]

    x = 1
    tot = 0
    cnt = [0] * 2019
    ans = 0

    for i in range(len(S)):
        # print("-----")
        # print(f"i: {i}")
        # print(f"tot: {tot}")
        # print(f"S[i]: {S[i]}")
        # print(f"x: {x}")
        # print(f"cnt: {cnt}")
        # print(f"cnt[tot]: {cnt[tot]}")
        # print(f"ans: {ans}")

        cnt[tot] += 1
        tot = (tot + (int(S[i]) * x)) % 2019
        ans += cnt[tot]
        x = (x * 10) % 2019
    
    # print("-----")
    # print(f"i: {i}")
    # print(f"tot: {tot}")
    # print(f"S[i]: {S[i]}")
    # print(f"x: {x}")
    # print(f"cnt: {cnt}")
    # print(f"cnt[tot]: {cnt[tot]}")
    # print(f"ans: {ans}")
    
    print(ans)


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

n, x, y = map(int, input().split())
li = []
x -= 1
y -= 1
for i in range(n-1):
  li_i = []
  for j in range(i+1, n):
    li_i.append(min(j-i, abs(x-i)+abs(y-j)+1))
  li.append(li_i)
for i in range(1,n):
  a = 0
  for j in range(n-1):
    for k in range(n-1-j):
      if li[j][k] == i:
        a += 1
  print(a)
    

### FIXED CODE ###

n, x, y = map(int, input().split())
li = [0 for i in range(n-1)]
x -= 1
y -= 1
for i in range(n-1):
  for j in range(i+1, n):
    a = min(j-i, abs(x-i)+abs(y-j)+1)
    li[a-1] += 1
for x in li:
  print(x)
### BUGGY CODE ###

from collections import deque

H,W=map(int,input().split())
grid=[input() for i in range(H)]
dist=[[-1]*W for _ in range(H)]

black_cells=deque()
for h in range(H):
    for w in range(W):
        if grid[h][w] == "#":
            black_cells.append((h,w))
            dist[h][w]=0

def bfs(black_cells,dist):
        d=0
        while black_cells:
            h,w=black_cells.popleft()
            d=dist[h][w]
            for dx, dy in ((1,0),(0,1),(-1,0),(0,-1)):
                new_h=h+dy
                new_w=w+dx
                if new_h <0 or H <= new_h or new_w < 0 or W<=new_w:
                    continue
                if dist[new_h][new_w]==-1:
                    dist[new_h][new_w]=d+1
                    black_cells.append((new_h,new_w))
        return d

d=bfs(black_cells,dist)
print(d)


### FIXED CODE ###

from collections import deque

H,W=map(int,input().split())
grid=[input() for i in range(H)]
dist=[[-1]*W for _ in range(H)]

black_cells=deque()
for h in range(H):
    for w in range(W):
        if grid[h][w] == "#":
            black_cells.append((h,w))
            dist[h][w]=0

def bfs(black_cells,dist):
        d=0
        while black_cells:
            h,w=black_cells.popleft()
            d=dist[h][w]
            for dx, dy in ((1,0),(0,1),(-1,0),(0,-1)):
                new_h=h+dy
                new_w=w+dx
                if new_h <0 or H <= new_h or new_w < 0 or W<=new_w:
                    continue
                if dist[new_h][new_w]==-1:
                    dist[new_h][new_w]=d+1
                    black_cells.append((new_h,new_w))
        return d

d=bfs(black_cells,dist)
print(d)
### BUGGY CODE ###

st = input()
cyclePos = -1
ls1 = [1] * len(st)
ls2 = [0] * len(st)
lss = []
for i in range(len(st)):
	if st[i] == 'L':
		ls2[i-1] += ls1[i]
	else:
		ls2[i+1] += ls1[i]
lss.append(ls1)
while (True):
	ls1 = ls2
	ls2 = [0] * len(st)
	for i in range(len(st)):
		if st[i] == 'L':
			ls2[i-1] += ls1[i]
		else:
			ls2[i+1] += ls1[i]
	for i in range(len(lss)):
		if ls2 == lss[i]:
			cyclePos = i
			break
	if cyclePos != -1:
		break
	lss.append(ls2)
for i in range(cyclePos):
	lss.pop(0)
Max = 10 ** 100 - cyclePos
pos = Max % len(lss)
print(*lss[pos-1], sep = " ")


### FIXED CODE ###

Max = 10 ** 100
st = input()
val = [0] * len(st)
ls = [0] * len(st)
pos = 0
for i in range(len(st)-1):
	if st[i] == st[i+1]:
		continue
	else:
		if st[i] == 'R':
			for j in range(pos, i):
				ls[j] = i - j
		else:
			for j in range(i, pos, -1):
				ls[j] = j - pos
		pos = i + 1
if st[i] == 'R':
	for j in range(pos, len(st)):
		ls[j] = i - j
else:
	for j in range(len(st)-1, pos, -1):
		ls[j] = j - pos
for i in range(len(st)):
	temp = (Max - ls[i]) % 2
	if temp == 1:
		ls[i] += 1
	if st[i] == 'L':
		val[i - ls[i]] += 1
	else:
		val[i + ls[i]] += 1
print(*val, sep = " ")
### BUGGY CODE ###

import sys
sys.setrecursionlimit(10000)

def simplefindset(x,element,resultPos=0):
    if(x != element[x]):
        resultPos = simplefindset(element[x],element,resultPos)
    else:
        resultPos = x
    return resultPos

def findset(x,element,weight,resultPos=0,sumW=0):
    if(x != element[x]):
        resultPos,sumW = findset(element[x],element,weight,resultPos,sumW)
    else:
        resultPos = x
    sumW += weight[x]
    return resultPos,sumW

def union(x,y,element,weight,w):
    x,wx = findset(x,element,weight)
    y,wy = findset(y,element,weight)
    link(x,wx,y,wy,w,element)
def link(x,wx,y,wy,z,element):
    z = z+wy-wx

    element[x] = y
    weight[x] = z

n,q = map(int, input().split());

element = [i for i in range(n)]
weight = [0 for i in range(n)]

for i in range(q):
    inp = map(int, input().split());
    inp = list(inp)    
    if(inp[0] == 0):
        x,y,w = inp[1],inp[2],inp[3]
        union(x,y,element,weight,w)
    else:
        x,y = inp[1],inp[2]
        if(simplefindset(x,element) == simplefindset(y,element)):
            x,wx = findset(x,element,weight)
            y,wy = findset(y,element,weight)
            print(wx-wy)
        else:
            print('?')


### FIXED CODE ###

import sys
sys.setrecursionlimit(50000)

def findset(x,element,weight):
    if(x != element[x]):
        element[x],s = findset(element[x],element,weight)
        weight[x] += s
    return element[x],weight[x]

def union(x,y,element,weight,w):
    x,wx = findset(x,element,weight)
    y,wy = findset(y,element,weight)
    link(x,y,w+wy-wx,element,weight)

def link(x,y,z,element,weight):

    element[x] = y
    weight[x] = z

n,q = map(int, input().split());

element = [i for i in range(n)]
weight = [0 for i in range(n)]

for i in range(q):
    inp = map(int, input().split());
    inp = list(inp)    
    if(inp[0] == 0):
        x,y,w = inp[1],inp[2],inp[3]
        union(x,y,element,weight,w)
    else:
        x,y = inp[1],inp[2]
        x,wx = findset(x,element,weight)
        y,wy = findset(y,element,weight)
        if(x == y):
            print(wx-wy)
        else:
            print('?')
### BUGGY CODE ###

n, q = map(int, input().split())
ab = [list(map(int, input().split())) for _ in range(n - 1)]
px = [list(map(int, input().split())) for _ in range(q)]
 
neigh = {}
 
scores = [0] * n
 
for i in range(q) :
    scores[px[i][0] - 1] += px[i][1]
#print(*scores) 
for i in range(n - 1) :
    neigh.setdefault(ab[i][0], []).append(ab[i][1])
#print(neigh)

for k in sorted(neigh.keys()):
    for e in neigh[k]:
        scores[e-1]+=scores[k-1]
 
print(*scores)

### FIXED CODE ###


n, q = map(int, input().split())
ab = [list(map(int, input().split())) for _ in range(n - 1)]
px = [list(map(int, input().split())) for _ in range(q)]
 
neigh = {}
 
scores = [0] * n
 
for i in range(q) :
    scores[px[i][0] - 1] += px[i][1]
#print(*scores) 
for i in range(n - 1) :
    neigh.setdefault(ab[i][0], []).append(ab[i][1])
#print(neigh)

sortKey = sorted(neigh.keys())
 
for k in sortKey :
    for e in neigh[k]:
        scores[e-1]+=scores[k-1]
 
print(*scores)
### BUGGY CODE ###

#E
N = int(input())
A = list(map(int,input().split()))
B = []
for i in range(N):
    B.append([A[i],i+1])
    
B.sort(reverse=True)

DP = [[0 for _ in range(N+1)] for _ in range(N+1)] #dp[x][y] x->1,2,3... y->N,N-1,N-2...
for i in range(N):
    I = i+1
    b,ind = B[i]
    
    for j in range(I+1):
        if j == 0:
            DP[j][I-j] = DP[j][I-j-1] + b*abs(N-(I-j)-ind+1)
        elif I-j == 0:
            DP[j][I-j] = DP[j-1][I-j] + b*abs(ind-j)
        else:
            DP[j][I-j] = max(DP[j][I-j-1]+b*abs(N-(I-j)-ind+1),DP[j-1][I-j]+b*abs(ind-j))
        
        
ans = 0
for i in range(N+1):
    ans = max(ans,DP[i][N-i])
    
#print(B)
print(ans)

### FIXED CODE ###

#E
N = int(input())
A = list(map(int,input().split()))
B = []
for i in range(N):
    B.append([A[i],i+1])
    
B.sort(reverse=True)

DP = [[0 for _ in range(N+1)] for _ in range(N+1)] #dp[x][y] x->1,2,3... y->N,N-1,N-2...
for i in range(N):
    I = i+1
    b,ind = B[i]
    
    for j in range(I+1):
        if j == 0:
            DP[j][I-j] = DP[j][I-j-1] + b*abs(N-(I-j)-ind+1)
        elif I-j == 0:
            DP[j][I-j] = DP[j-1][I-j] + b*abs(ind-j)
        else:
            DP[j][I-j] = max(DP[j][I-j-1]+b*abs(N-(I-j)-ind+1),DP[j-1][I-j]+b*abs(ind-j))
        
        
ans = 0
for i in range(N+1):
    ans = max(ans,DP[i][N-i])
    
#print(B)
print(ans)
### BUGGY CODE ###

s=str(input())
n=len(s)
i=0
ans=0
c=0
d=0
while i < n:
	if s[i] == "<":
		c=c+1
		ans=ans+c
	else:
		j=1
		while (i >= j) and (s[i-j] == ">"):
			j=j+1
		if j > 1:
			if d >= j:
				ans=ans+j-1
			else:
				ans=ans+j
		elif i == 0:
			ans=1
		else:
			d=c
		c=0
	i=i+1
print(ans)

### FIXED CODE ###

s=str(input())
n=len(s)
i=0
ans=0
c=0
d=0
j=0
while i < n:
	if s[i] == "<":
		c=c+1
		ans=ans+c
		j=0
	else:
		j=j+1
		if j > 1:
			if d >= j:
				ans=ans+j-1
			else:
				ans=ans+j
		elif i == 0:
			ans=1
		else:
			d=c
		c=0
	i=i+1
print(ans)
### BUGGY CODE ###

import sys
input = sys.stdin.readline
from collections import deque

N = int(input())
#A = list(map(int, input().split()))
A = [(a, i) for i, a in enumerate(map(int, input().split()))]
A = sorted(A, reverse=True)

values = []
num_indcies = {}
for i, a in enumerate(A):
    if not a in num_indcies:
        num_indcies[a] = [i]
        values.append(a)
    else:
        num_indcies[a].append(i)

values = sorted(values, reverse=True)
ans = 0
# indexの配列
dp_indices = []
for v in values:
    dp_indices.extend(num_indcies[v])


dp = [[0] * (N+1) for _ in range(N+1)]
for no, (a, pos) in enumerate(A):
    for i in range(no+1):
        j = no - i
        #k = dp_indices[i+j-2]
        #a = A[k]
        dp[i+1][j] = max(dp[i+1][j], dp[i][j] + a * (pos -i))
        dp[i][j+1] = max(dp[i][j+1], dp[i][j] + a * abs(pos - (N-1-j)))

ans = 0
for i in range(1, N+1):
    ans = max(ans, dp[i][N-i])
print(ans)





### FIXED CODE ###

import sys
input = sys.stdin.readline
from collections import deque

N = int(input())
#A = list(map(int, input().split()))
A = [(a, i) for i, a in enumerate(map(int, input().split()))]
A = sorted(A, reverse=True)

values = []
num_indcies = {}
for i, a in enumerate(A):
    if not a in num_indcies:
        num_indcies[a] = [i]
        values.append(a)
    else:
        num_indcies[a].append(i)

values = sorted(values, reverse=True)
ans = 0
# indexの配列
dp_indices = []
for v in values:
    dp_indices.extend(num_indcies[v])


dp = [[0] * (N+1) for _ in range(N+1)]
for no, (a, pos) in enumerate(A):
    for i in range(no+1):
        j = no - i
        #k = dp_indices[i+j-2]
        #a = A[k]
        dp[i+1][j] = max(dp[i+1][j], dp[i][j] + a * (pos -i))
        dp[i][j+1] = max(dp[i][j+1], dp[i][j] + a * abs(pos - (N-1-j)))

ans = 0
for i in range(1, N+1):
    ans = max(ans, dp[i][N-i])
print(ans)
### BUGGY CODE ###

def main(X, Y):
    M = len(Y)
    dp = [0]*(M+1)
    dp_s = [""]*(M+1)
    for i, x in enumerate(X):
        dp_pre = dp[:]
        dp_s_pre = dp_s[:]
        for j, y in enumerate(Y):
            if x == y:
                dp[j+1] = dp_pre[j] + 1
                dp_s[j+1] = dp_s_pre[j] + x
            elif dp[j+1] < dp[j]:
                dp[j+1] = dp[j]
                dp_s[j+1] = dp_s[j]
    return print(dp_s[M])


if __name__ == "__main__":
    X = input()
    Y = input()
    main(X, Y)


### FIXED CODE ###

def main():
    X = input()
    Y = input()
    N = len(X)
    M = len(Y)
    dp = [[0]*(M+1) for _ in range(N+1)]
    for i, x in enumerate(X):
        for j, y in enumerate(Y):
            if x == y:
                dp[i+1][j+1] = dp[i][j] + 1
            else:
                dp[i+1][j+1] = max(dp[i][j+1], dp[i+1][j])
    res = ""
    while N > 0 and M > 0:
        if dp[N][M] == dp[N-1][M]:
            N -= 1
        elif dp[N][M] == dp[N][M-1]:
            M -= 1
        else:
            res = X[N-1] + res
            N -= 1
            M -= 1
    print(res)


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

a,b,c,d = map(int,input().split())
cdm = [_ for _ in range(a, b+1) if _%c == 0 or _%d == 0]

print(b-a-len(cdm)+1)

### FIXED CODE ###

def lcm(a,b):
    ab = a*b
    while b != 0:
        a, b = b, a%b
    return ab //a

def su(n,c,d):
    return n - n//c - n//d + n//lcm(c,d)
    
def main():
    a,b,c,d = map(int,input().split())
    print(su(b,c,d) - su(a-1,c,d))
    
if __name__ == '__main__':
    main()
### BUGGY CODE ###

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

if K==1:
    N=0

while abs(N-K)<N:
    N=abs(N-K)

print(N)


### FIXED CODE ###

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



for i in reversed(range(18)):
    while N > 10 ** i * K:
        N=N-10 ** i * K


while abs(N-K)<N:

    N=abs(N-K)

print(N)
### 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 = 10**9 + 7
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

h, w = LI()
ch, cw = LI()
dh, dw = LI()
s = [input() for _ in range(h)]

dx, dy = [1, 0, -1, 0], [0, 1, 0, -1]
que = deque([(cw-1, ch-1)])
d = [[10**10] * w for _ in range(h)]
d[ch-1][cw-1] = 0
while que:
    x, y = que.popleft()
    for i in range(4):
        nx, ny = x + dx[i], y + dy[i]
        if 0 <= nx < w and 0 <= ny < h:
            if s[ny][nx] == '.' and d[ny][nx] > d[y][x]:
                d[ny][nx] = d[y][x]
                que.append((nx, ny))
    for i in range(-2, 3):
        for j in range(-2, 3):
            nx, ny = x + i, y + j
            if 0 <= nx < w and 0 <= ny < h:
                if s[ny][nx] == '.' and d[ny][nx] > d[y][x] + 1:
                    d[ny][nx] = d[y][x] + 1
                    que.append((nx, ny))
if d[dh-1][dw-1] == 10**10:
    print(-1)
else:
    print(d[dh-1][dw-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 = 10**9 + 7
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

h, w = LI()
ch, cw = LI()
dh, dw = LI()
s = [input() for _ in range(h)]

dx, dy = [1, 0, -1, 0], [0, 1, 0, -1]
que = deque([(cw-1, ch-1)])
d = [[10**10] * w for _ in range(h)]
d[ch-1][cw-1] = 0
while que:
    x, y = que.popleft()
    for i in range(4):
        nx, ny = x + dx[i], y + dy[i]
        if 0 <= nx < w and 0 <= ny < h:
            if s[ny][nx] == '.' and d[ny][nx] > d[y][x]:
                d[ny][nx] = d[y][x]
                que.appendleft((nx, ny))
    for i in range(-2, 3):
        for j in range(-2, 3):
            nx, ny = x + i, y + j
            if 0 <= nx < w and 0 <= ny < h:
                if s[ny][nx] == '.' and d[ny][nx] > d[y][x] + 1:
                    d[ny][nx] = d[y][x] + 1
                    que.append((nx, ny))
if d[dh-1][dw-1] == 10**10:
    print(-1)
else:
    print(d[dh-1][dw-1])
### BUGGY CODE ###

N = int(input())
cnt = [1]
for i in range(1,N + 1):
    for j in range(2,N + 1):
        if i ** j <= N:
            cnt.append(i ** j)
    
print(max(cnt))

### FIXED CODE ###

N = int(input())
cnt = [1]
for i in range(1,N + 1):
    for j in range(2,N + 1):
        if i ** j <= N:
            cnt.append(i ** j)
        else:
            break
    
print(max(cnt))
### BUGGY CODE ###

from copy import deepcopy
N = int(input())
A = list(map(int,input().split()))
count = 0
for i,a in enumerate(A):
    flag = 0
    A2 = deepcopy(A)
    del A2[i]
    for j in A2:
        if a % j == 0:
            flag = 1
            break
    if flag == 0:
        count += 1
print(count)



### FIXED CODE ###

N = int(input())
A = list(map(int,input().split()))
M = 1000001
cnt = [0]*M
ans = 0
for x in A:
    if cnt[x] != 0:
        cnt[x] = 2
        continue
    for i in range(x,M,x):
        cnt[i] += 1
for x in A:
    if cnt[x] == 1:
        ans += 1
print(ans)
### BUGGY CODE ###

n = int(input())
a = list(map(int,input().split()))
P = 10 ** 9 + 7
p = 10 ** 9 + 7
mo = P
inv_t = [0]+[1]
#for i in range(2,1000009):
  #inv_t += [inv_t[P % i] * (P - int(P / i)) % P]

#print("俺のソフト")

def gcd(a,b):
    if a%b == 0:
        return b
    else:
        return gcd(b,a%b)

M = a[0]
for i in range(1, n):
    M = M * a[i] // gcd(M, a[i])

ans = 0
for i in range(n):
    ans += M //a[i]
    ans = ans %p

print(ans)



### FIXED CODE ###

n = int(input())
a = list(map(int,input().split()))
P = 10 ** 9 + 7
p = 10 ** 9 + 7
mo = P
inv_t = [0]+[1]
for i in range(2,1000009):
    inv_t += [inv_t[P % i] * (P - int(P / i)) % P]

#print("俺のソフト")

def gcd(a,b):
    if a%b == 0:
        return b
    else:
        return gcd(b,a%b)

M = a[0]
for i in range(1, n):
    M = M * a[i] // gcd(M, a[i])

M = M%p
ans = 0
for i in range(n):
    ans += M*inv_t[a[i]]
    ans = ans %p

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

import sys
import math
import functools
from collections import deque
sin = sys.stdin

nk = sin.readline().split()
n = int(nk[0])
k = int(nk[1])
heights = [int(i) for i in sin.readline().split()]

lowestCost = [0 for i in range(n)]

lowestCost[0] = 0
lowestCost[1] = abs(heights[1] - heights[0])

for i in range(2, n):
    m = float('inf')
    for j in range(i-k, i):
        if j >= 0:
            m = min(m, lowestCost[j] + abs(heights[j] - heights[i]))
    lowestCost[i] = m

print(lowestCost[n-1])


### FIXED CODE ###

import sys
import math
import functools
from collections import deque
sin = sys.stdin

nk = sin.readline().split()
n = int(nk[0])
k = int(nk[1])
heights = [int(i) for i in sin.readline().split()]
lowestCost = [0 for i in range(n)]

lowestCost[0] = 0
lowestCost[1] = abs(heights[1] - heights[0])

for i in range(2, n):
    m = float('inf')
    for j in range(i-k, i):
        if j >= 0:
            m = min(m, lowestCost[j] + abs(heights[j] - heights[i]))
    lowestCost[i] = m

print(lowestCost[n-1])
### BUGGY CODE ###

k,s=map(int,input().split())
ans=0

for x in range(k+1):
    for y in range(k+1):
        for z in range(k+1):
            if x+y+z==s:
                ans+=1
print(ans)

### FIXED CODE ###

k,s=map(int,input().split())
ans=0

for x in range(k+1):
    for y in range(k+1):
       if 0<=s-(x+y)<=k:
           ans+=1
print(ans)
### BUGGY CODE ###

#!/usr/bin/env python3
import sys

sys.setrecursionlimit(1000000)


def count(n):
    if n < 2:
        return 1
    return count(n - 1) + count(n - 2)


n, m, *a = map(int, open(0).read().split())
if sum(a[i + 1] == a[i] + 1 for i in range(m - 1)) > 0:
    print(0)
    exit()

a.append(n + 1)
c = -1
ans = 1
for i in a:
    ans = ans * count(i - c - 2) % (10**9 + 7)
    c = i
print(ans)


### FIXED CODE ###

#!/usr/bin/env python3
import sys

sys.setrecursionlimit(1000000)


memo = [0]*(10**5+1)
def count(n):
    if n < 2:
        return 1
    if memo[n] != 0:
        return memo[n]
    memo[n] = count(n-1) + count(n-2)
    return memo[n]


n, m, *a = map(int, open(0).read().split())
if sum(a[i + 1] == a[i] + 1 for i in range(m - 1)) > 0:
    print(0)
    exit()

a.append(n + 1)
c = -1
ans = 1
for i in a:
    ans = ans * count(i - c - 2) % (10**9 + 7)
    c = i
print(ans)
### BUGGY CODE ###

N = int(input())
A = list(map(int, input().split()))
lis = [0]*N
for i in range(1, N+1):
    lis[i-1] = A.index(i)+1

L=[str(a) for a in lis]
L=" ".join(L)
print(L)

### FIXED CODE ###

N = int(input())
A = list(map(int, input().split()))
L = [0]*N
for i in range(0, N):
    L[A[i]-1] = i + 1
print(*L)
### BUGGY CODE ###

import sys
import fractions
from functools import reduce

def input():
	return sys.stdin.readline()

def gcd(num):
	return reduce(fractions.gcd, num)

N = int(input())
A = [int(_) for _ in input().split()]

ans = 0
for i in range(N):
	if i == 0:
		A_ = A[1:]
	elif i == N-1:
		A_ = A[:-1]
	else:
		A_ = A[:i]+A[i+1:]
	ans = max(ans, gcd(A_))

print(ans)


### FIXED CODE ###

import sys
from fractions import gcd

def input():
	return sys.stdin.readline()

N = int(input())
A = [int(_) for _ in input().split()]
p1 = [0] * N
p2 = [0] * N

p1[0] = A[0]
p2[-1] = A[-1]

for i in range(1, N):
	p1[i] = gcd(p1[i-1], A[i])
	p2[-(i+1)] = gcd(p2[-i], A[-(i+1)])

m = max(p1[-2], p2[1])

if N > 2:
	for i in range(1, N-1):
		m = max(m, gcd(p1[i-1], p2[i+1]))

print(m)
### BUGGY CODE ###


S = list(input())
Q = int(input())
l = []
for i in range(Q):
  l.append(list(input().split()))
    
for i in range(Q):
    if l[i][0] == "1":
        S.reverse()
    else:
        if l[i][1] == "1":
            S = list(l[i][2]) + S
            
        else:
            S = S + list(l[i][2])
            
print("".join(S))

### FIXED CODE ###

from collections import deque

S = deque(list(input()))
Q = int(input())
l = []
for i in range(Q):
  l.append(list(input().split()))
    
flag = 1 #1ならふつう, -1なら逆


for i in range(Q):
    if l[i][0] == "1":
        flag *= -1
    elif flag == 1:
        if l[i][1] == "1":
            S.appendleft(l[i][2])
            
        else:
            S.append(l[i][2])
            
    else:
        if l[i][1] == "2":
            S.appendleft(l[i][2])
            
        else:
            S.append(l[i][2])


if flag == 1:
    print("".join(S))
else:
    S.reverse()
    print("".join(S))
### BUGGY CODE ###

l,r = map(int,input().split())
number_list=[i for i in range(l,r+1)]
c=2019
for i in number_list:
  if i%2019==0:
    print(0)
    break
else:
  for j in number_list:
    for k in number_list:
      if j<k:
        if c>(((j%2019)*(k%2019))%2019):
          c=(((j%2019)*(k%2019))%2019)
  print(c)
        

### FIXED CODE ###

l,r = map(int,input().split())
c=2019
for i in range(l,r+1):
  if i%2019==0:
    print(0)
    break
else:
  for j in range(l,r+1):
    for k in range(j+1,r+1):
      if c>(j*k%2019):
        c=(j*k%2019)
  print(c)