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

I = list(map(int, input().split()))
N = I[0]
K = I[1]
H = list(map(int, input().split()))

dp = [float('inf') for _ in range(N+1)]

dp[N] = 0
for i in range(N-1,N-K-1,-1):
	if i>0:
		dp[i] = abs(H[i-1]-H[N-1])

for i in range(N-K-1,0,-1):
	for k in range(1,K+1):
		if i+k<=N:
			dp[i] = min(abs(H[i+k-1]-H[i-1])+dp[i+k], dp[i])

print(dp[1])

### FIXED CODE ###

I = list(map(int, input().split()))
N = I[0]
K = I[1]
H = list(map(int, input().split()))

dp = [float('inf') for _ in range(N+1)]

dp[N] = 0
for i in range(N-1,N-K-1,-1):
	if i>0:
		dp[i] = abs(H[i-1]-H[N-1])

for i in range(N-K-1,0,-1):
	for k in range(1,K+1):
		if i+k<=N:
			dp[i] = min(abs(H[i+k-1]-H[i-1])+dp[i+k], dp[i])

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

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

ans=[0]*N

for i in range (N):
    a=0
    for j in range(N-i-1):
        if Hi[i+j]>=Hi[i+j+1]:
            a+=1
        else:
            break
    ans[i]=a

print(max(ans))

### FIXED CODE ###

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

# ans=[0]*N

# for i in range (N):
#     a=0
#     # if Hi[i]<Hi[i-1]:
#     #     continue
#     for j in range(N-i-1):
#         if Hi[i+j]>=Hi[i+j+1]:
#             a+=1
#         else:
#             break
#     ans[i]=a

# print(max(ans))

ans=0
temp=0

for i in range(1,N):
    if Hi[i]<=Hi[i-1]:
        temp+=1
    else:
        if temp>ans:
            ans=temp
        else:
            pass
        temp=0
else:
    if temp>ans:
        ans=temp

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

m = 'Male'
f = 'Female'
v = 'Vacant'

N = int(input())
x = 0
y = N - 1
cnt = 2
print(x)
h_bef = input()
if h_bef == v:
	print(0)
	exit()
while cnt < 20:
	p = (x+y+1)//2
	print(p)
	h = input()
	if h == v:
		break
	mod = 0 if h_bef == h else 1
	if (p-x) % 2 == mod:
		x = p
	else:
		y = p - 1
	h_bef = h
	cnt += 1
exit()

### FIXED CODE ###

m = 'Male'
f = 'Female'
v = 'Vacant'

N = int(input())
x = 0
y = N
cnt = 1
print(0)
p_bef = 0
h_bef = input()
if h_bef == v:
	exit()
while cnt < 50:
	p = (x+y+1)//2
	print(p)
	h = input()
	if h == v:
		break
	mod = 0 if h_bef == h else 1
	if (p-x) % 2 == mod:
		x = p
		h_bef = h
	else:
		y = p
	cnt += 1
exit()
### BUGGY CODE ###

import numpy as np

def main():
    SpotNum = int(input())
    SpotCoordinate = [int(i) for i in input().split()]
    
    SpotCoordinate.insert(0, 0)
    SpotCoordinate.append(0)
    
    DiffSpotCoordinate = abs(np.diff(SpotCoordinate))
#    print(DiffSpotCoordinate)
    
    SumTable = [0 for i in range(100000)]
#    print(SumTable)
    
    Diff = abs(SpotCoordinate[0] - SpotCoordinate[2] )
    result = Diff + sum(DiffSpotCoordinate[2:])
    print(result)
    
    for i in range(1,SpotNum):
        if(SumTable == []):
            SumTable[i-1] = sum(DiffSpotCoordinate[:i])
#            print(SumTable[i-1])
        else:
            SumTable[i-1] = SumTable[i-2] + sum(DiffSpotCoordinate[i-1:i])
#            print(SumTable[i-1])
            
        Diff = abs(SpotCoordinate[i] - SpotCoordinate[i+2] )
#        print(Diff)
        
        result = Diff + SumTable[i-1] + sum(DiffSpotCoordinate[i+2:])
#        print(RmSpotCoodinate)
#        print(sum(abs(np.diff(RmSpotCoordinate))))
        print(result)
        
if __name__=="__main__":
    main()

### FIXED CODE ###

import numpy as np

def main():
    SpotNum = int(input())
    SpotCoordinate = [int(i) for i in input().split()]
    
    SpotCoordinate.insert(0, 0)
    SpotCoordinate.append(0)
    
    DiffSpotCoordinate = abs(np.diff(SpotCoordinate))
#    print(DiffSpotCoordinate)
    
#    SumTable = [0 for i in range(100000)]
##    print(SumTable)
#    
#    Diff = abs(SpotCoordinate[0] - SpotCoordinate[2] )
#    result = Diff + sum(DiffSpotCoordinate[2:])
#    print(result)
#    
#    for i in range(1,SpotNum):
#        if(SumTable == []):
#            SumTable[i-1] = sum(DiffSpotCoordinate[:i])
##            print(SumTable[i-1])
#        else:
#            SumTable[i-1] = SumTable[i-2] + sum(DiffSpotCoordinate[i-1:i])
##            print(SumTable[i-1])
#            
#        Diff = abs(SpotCoordinate[i] - SpotCoordinate[i+2] )
##        print(Diff)
#        
#        result = Diff + SumTable[i-1] + sum(DiffSpotCoordinate[i+2:])
##        print(RmSpotCoodinate)
##        print(sum(abs(np.diff(RmSpotCoordinate))))
#        print(result)
    
    SumDiffSpotCoordinate = sum(DiffSpotCoordinate)
    for i in range(1,SpotNum+1):
        result = SumDiffSpotCoordinate - DiffSpotCoordinate[i-1] - DiffSpotCoordinate[i] + abs(SpotCoordinate[i-1] - SpotCoordinate[i+1])
        print(result)
        
if __name__=="__main__":
    main()
### BUGGY CODE ###

import math
from functools import reduce

def gcd(*numbers):
    return reduce(math.gcd, numbers)
    
n=int(input())
    
res=0
for a in range(1,n+1):
    for b in range(1,n+1):
        for c in range(1,n+1):
            res+=gcd(a,b,c)
print(res)

### FIXED CODE ###

import math
from functools import reduce


n=int(input())
    
res=0
nlist=[]
for a in range(1,n+1):
    for b in range(1,n+1):
        nlist.append(math.gcd(a,b))
        
import collections

c = collections.Counter(nlist)
ck=list(c.keys())
cv=list(c.values())

cn=len(ck)

for i in range(cn):
    for c in range(1,n+1):
        res+=math.gcd(c,ck[i])*cv[i]
print(res)
### BUGGY CODE ###

import sys
sys.setrecursionlimit(200000)

N = int(input())
MOD = 10 ** 9 + 7

to = [[] for _ in range(N)]
for _ in range(N-1):
    x, y = map(int, input().split())
    to[x-1].append(y-1)
    to[y-1].append(x-1)

def dfs(n,p):
    w = 1
    b = 1
    for i in to[n]:
        if i != p:
            rw, rb = dfs(i, n)
            w *= (rw + rb)
            w %= MOD
            b *= rw
            b %= MOD
    return (w,b)

ans = dfs(0, -1)
print((ans[0] + ans[1]) % MOD)

### FIXED CODE ###

import sys
sys.setrecursionlimit(200000)

N = int(input())
MOD = 10 ** 9 + 7

to = [[] for _ in range(N)]
for _ in range(N-1):
    x, y = map(int, input().split())
    to[x-1].append(y-1)
    to[y-1].append(x-1)

def dfs(n,p):
    w = 1
    b = 1
    for i in to[n]:
        if i != p:
            rw, rb = dfs(i, n)
            w *= (rw + rb)
            w %= MOD
            b *= rw
            b %= MOD
    return (w,b)

ans = dfs(0, -1)
print((ans[0] + ans[1]) % MOD)
### BUGGY CODE ###

from collections import deque
import numpy as np
h, w = map(int, input().split())
mass = [[ord(i) for i in input()] for _ in range(h)]
wall = ord("#")
dx = [0, 0, 1, -1]
dy = [1, -1, 0, 0]


def bfs(s, t):
    if mass[s][t] == wall:
        return 0
    visited = [[False] * w for _ in range(h)]
    depth = np.zeros((h, w))
    q1 = deque([s])
    q2 = deque([t])
    while q1:
        x = q1.popleft()
        y = q2.popleft()
        visited[x][y] = True

        for d in range(4):
            nx = x + dx[d]
            ny = y + dy[d]
            if nx < 0 or h - 1 < nx or ny < 0 or w - 1 < ny:
                continue

            if mass[nx][ny] == wall or visited[nx][ny]:
                continue

            q1.append(nx)
            q2.append(ny)
            depth[nx][ny] = depth[x][y] + 1
    return np.max(depth)


ans = 0
for i in range(h):
    for j in range(w):
        ans = max(ans, bfs(i, j))
print(int(ans))


### FIXED CODE ###

import numpy as np
from collections import deque
h, w = map(int, input().split())
r = [list(input()) for i in range(h)]


def dist(s, t):
    if r[s][t] == "#":
        return 0
    else:
        visited = np.zeros((h, w))
        visited[s][t] += 1
        distance = np.zeros((h, w))
        q = deque([[s, t]])
        while len(q) > 0:
            i, j = q.popleft()
            d = distance[i][j] + 1
            if j != w-1:
                if r[i][j+1] == "." and not visited[i][j+1]:
                    q.append([i, j + 1])
                    visited[i][j+1] += 1
                    distance[i][j+1] += d
            if j != 0:
                if r[i][j-1] == "." and not visited[i][j-1]:
                    q.append([i, j - 1])
                    visited[i][j - 1] += 1
                    distance[i][j - 1] += d
            if i != 0:
                if r[i-1][j] == "." and not visited[i-1][j]:
                    q.append([i - 1, j])
                    visited[i-1][j] += 1
                    distance[i-1][j] += d
            if i != h-1:
                if r[i+1][j] == "." and not visited[i+1][j]:
                    q.append([i + 1, j])
                    visited[i+1][j] += 1
                    distance[i+1][j] += d
        return np.max(distance)


ans = 0
for s in range(h):
    for t in range(w):
        ans = max(ans, dist(s, t))

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

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

    ans = 1
 
    for i in a:
        ans *= i
    
    if ans > int(1e18): return -1
    return ans
    

print(solve())

### FIXED CODE ###

from collections import Counter
def solve():
    n = int(input())
    a = list(map(int, input().split()))

    if 0 in a: return 0
    l = Counter(a)
    ans = 1
    for i,j in l.items():
        ans *= i**j
        if ans > int(1e18):
            return -1

    return ans
    

print(solve())
### BUGGY CODE ###

n = int(input()) 
a = list(map(int,input().split())) 
if n%2==0:
    k = 0
else:
    k = 1
if k==0:
    for i in range(1,n,2):
        if a.count(i)!=2:
            print(0)
    else:
        print((2**(n//2))%(10**9+7))
else:
    if a.count(0)!=1:
        print(0)
    else:
        for i in range(2,n,2):
            if a.count(i)!=2:
                print(0)
        else:
            print((2**(n//2))%(10**9+7))

### FIXED CODE ###

n = int(input()) 
a = list(map(int,input().split())) 
a = sorted(a)
mod = 10**9+7
if n%2==0:
    k = 0
else:
    k = 1
if k==0:
    for i in range(1,n,2):
        if a[i]!=i or a[i-1]!=i:
            print(0)
            exit()
    else:
        print(2**(n//2)%mod)
else:
    if a[0]!=0:
        print(0)
        exit()
    else:
        for i in range(2,n,2):
            if a[i-1]!=i or a[i]!=i:
                print(0)
                exit()
        else:
            print(2**(n//2)%mod)
### BUGGY CODE ###

n = int(input())
h = [int(i) for i in input().split()]
num = []
for i in range(len(h)):
  num.append(h.index(i+1)+1)
print(*num, sep=" ")


### FIXED CODE ###

n = int(input())
h = [int(i) for i in input().split()]
num = [0 for i in range(n)]
for i in range(len(h)):
  num[h[i]-1] = i+1
print(' '.join(map(str, num)))
### BUGGY CODE ###

from math import factorial

f = factorial

n = int(input())

if n % 2 == 0:
	if n == 2:
		ans = 2
	else:
		ans = (2 ** (n//2)) * f(n//2)
		
else:
	if n == 1:
		ans = 1
	else:
		ans = f(n) // (f(n//2) * (2 ** (n//2)))
		#print('a', f(n))
		#print('b', f(n//2)*(2**(n//2)))

cnt = 0
ans = str(ans)

for i in reversed(ans):
	if i == '0':
	  cnt += 1
	else:
		break
		
print(cnt)
#print(ans)

### FIXED CODE ###

n = int(input())

if n % 2 == 1:
	print('0')
		
else:
	five = 0
	two = 0
	for i in range(1, n):
		f = n // (2*(5**i))
		t = n // (2**i)
		if f == t == 0:
			break
		five += f
		two += t
	print(min(five, two))
### BUGGY CODE ###

N, K = (int(x) for x in input().split())
trip = input().split()

now = 1

for k in range(K):
  now = int(trip[now-1])
   
print(now)



### FIXED CODE ###

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

route = []
town = set()
now = 1

while True:
    now = a[now-1]
    if now in town:
        break
    town.add(now)
    route.append(now)

count = route.index(now)
if count >= k:
    print(route[k-1])
else:
    route = route[count:]
    num = (k-count)%len(route)
    print(route[num-1])
### BUGGY CODE ###

n = int(input())
a = [int(input()) for _ in range(n)]
modulo = 998244353

a.sort(reverse=True)
sol = 3 ** n % modulo
s = sum(a)
half_s = s / 2

from collections import Counter
dp = [Counter([0])]
for i, ai in enumerate(a):
    dp.append(dp[i] + dp[i])
    for key, item in dp[-2].items():
        dp[-1][key + ai] += dp[-2][key]
        if dp[-1][key + ai] > modulo:
            dp[-1][key + ai]-=modulo

sol -= 3 * sum(item for key, item in dp[-1].items() if key >= half_s)

if s % 2 == 0:
    dp = [Counter([0])]
    for i, ai in enumerate(a):
        dp.append(dp[-1].copy())
        for key, item in dp[-2].items():
            new_key = key + ai
            if new_key <= int(half_s):
                dp[-1][new_key] += dp[-2][key]
                if dp[-1][new_key] > modulo:
                    dp[-1][new_key] -= modulo

    sol += 3 * dp[-1][half_s]
sol %= modulo

print(sol)

### FIXED CODE ###

import numpy as np
from math import ceil

n = int(input())
a = [int(input()) for _ in range(n)]
modulo = 998244353

s = sum(a)

dp = np.zeros(s + 1, dtype=np.int)
dp[0] = 1
for ai in a:
    dp[ai:] = 2 * dp[ai:] + dp[:-ai]
    dp[:ai] = 2 * dp[:ai]
    dp %= modulo
sol = 3 ** n % modulo
sol -= 3 * dp[ceil(s / 2) :].sum()


if s % 2 == 0:
    dp = np.zeros(s + 1, dtype=np.int)
    dp[0] = 1
    for ai in a:
        dp[ai:] = dp[ai:] + dp[:-ai]
        dp %= modulo

    sol += 3 * dp[s // 2]

sol %= modulo

print(sol)
### BUGGY CODE ###

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

ans = set(range(l, r + 1))
for _ in range(m - 1):
    l, r = map(int, input().split())
    ans &= set(range(l, r + 1))

print(len(ans))

### FIXED CODE ###

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

for _ in range(m - 1):
    a, b = map(int, input().split())
    l = max(l, a)
    r = min(r, b)

print(max(0, r - l + 1))
### BUGGY CODE ###

N, K = map(int, input().split())
X = []
Y = []
XY = []
for _ in range(N):
    x, y = map(int, input().split())
    X.append(x)
    Y.append(y)
    XY.append((x, y))

X = sorted(X)
Y = sorted(Y)
mi = 1<<200
for i in range(N):
    for j in range(i+1, N):
        for k in range(N):
            for l in range(k+1, N):
                s = 0
                for x, y in XY:
                    if X[i] <= x <= X[j] and Y[k] <= y <= Y[l]:
                        s += 1
                if s >= K:
                    mi = min(mi, (X[j] - X[i]) * (Y[l] - Y[k]))

print(mi)


### FIXED CODE ###

N, K = map(int, input().split())
X = []
Y = []
XY = []
for _ in range(N):
    x, y = map(int, input().split())
    X.append(x)
    Y.append(y)
    XY.append((x, y))

X = sorted(X)
Y = sorted(Y)
mi = 1<<200
for i in range(N):
    for j in range(i+1, N):
        for k in range(N):
            for l in range(k+1, N):
                s = 0
                for x, y in XY:
                    if X[i] <= x <= X[j] and Y[k] <= y <= Y[l]:
                        s += 1
                if s >= K:
                    mi = min(mi, (X[j] - X[i]) * (Y[l] - Y[k]))

print(mi)
### BUGGY CODE ###

S=input()
Q=int(input())
p=0 #front=0 back=1
for i in range(Q):
    A="".join(input().split())
    if A[0]=="1":
        if p==0:p=1
        else:p=0
    else:
        if A[1]=="1":
            if p==0:
                S=A[2]+S
            else:
                S+=A[2]
        else:
            if p==0:
                S+=A[2]
            else:
                S=A[2]+S
                
print(S if p==0 else S[::-1])


### FIXED CODE ###

from collections import deque
S=deque(input())
Q=int(input())
rev=False
for i in range(Q):
    A=input().split()
    if A[0]=="1":
        if rev==False:rev=True
        else:rev=False
    else:
        if rev==False:
            if A[1]=="1":
                S.appendleft(A[2])
            else:
                S.append(A[2])
        else:
            if A[1]=="1":
                S.append(A[2])
            else:
                S.appendleft(A[2])
if rev:
    S.reverse()
print(*S,sep="")
### BUGGY CODE ###

#067-D
def IL(): return list(map(int,input().split()))
def SL(): return input().split()
def I(): return int(input())
def S(): return input()

n=I()
prev=[-1 for i in range(n)]
nl=[[] for i in range(n)]
q=[0]
vis=[False for i in range(n)]

for i in range(n-1):
    a,b=IL()
    nl[a-1].append(b-1)
    nl[b-1].append(a-1)

while len(q)!=0:
    s=q.pop(0)
    vis[s]=True
    for v in nl[s]:
        if not vis[v]:
            prev[v]=s
            q.append(v)

path=[n-1]
while True:
    if path[-1]==0:
        break
    path.append(prev[path[-1]])
path.reverse()
    
for i in range(1,n):
    while True:
        if prev[i] in path:
            break
        prev[i]=prev[prev[i]]

if len(path)%2==0:
    fenp=path[:len(path)//2]
    fen=len(path)//2
else:
    fenp=path[:len(path)//2+1]
    fen=len(path)//2+1

snu=len(path)-fen

for i in range(n):
    if i not in path:
        if prev[i] in fenp:
            fen+=1
        else:
            snu+=1
    
if fen>snu:
    print("Fennec")
else:
    print("Snuke")

### FIXED CODE ###

#067-D
def IL(): return list(map(int,input().split()))
def SL(): return input().split()
def I(): return int(input())
def S(): return input()

n=I()
nl=[[] for i in range(n)]
distfen=[-1 for i in range(n)]
distsnu=[-1 for i in range(n)]

for i in range(n-1):
    a,b=IL()
    nl[a-1].append(b-1)
    nl[b-1].append(a-1)
    
q=[[0,0]]
vis=[False for i in range(n)]
while len(q)!=0:
    s,d=q.pop(0)
    vis[s]=True
    for v in nl[s]:
        if not vis[v]:
            distfen[v]=d+1
            q.append([v,d+1])

q=[[n-1,0]]
vis=[False for i in range(n)]
while len(q)!=0:
    s,d=q.pop(0)
    vis[s]=True
    for v in nl[s]:
        if not vis[v]:
            distsnu[v]=d+1
            q.append([v,d+1])
        
fen=0
snu=0

for i in range(1,n-1):
    if distfen[i]<=distsnu[i]:
        fen+=1
    else:
        snu+=1

if fen>snu:
    print("Fennec")
else:
    print("Snuke")
### BUGGY CODE ###

import math
import sys

def getinputdata():

    # 配列初期化
    array_result = []
    
    data = input()

    
    array_result.append(data.split(" "))

    flg = 1

    try:


        while flg:

            data = input()

            array_temp = []

            if(data != ""):
                
                array_result.append(data.split(" "))

                flg = 1

            else:

                flg = 0
    finally:


        return array_result





arr_data = getinputdata()

#maxvalue
k = int(arr_data[0][0])

#sumvalue
s = int(arr_data[0][1])


#print(k,s)

cnt = 0
    
x = 0
while x <= k:

    if x>s:
        
        break
        
    y = 0
    while y<=k:
        
        if y>s or x+y>s:
        
            break
        
        z=0
        while z<=k:
    
            
            if z>s or x+y+z>s:
                
                break
#            print(x,y,z)
            
            if x + y + z == s:
                
                cnt += 1
                break
            
            z+=1
            
        y+=1
    
    x+=1

print(cnt)
    
    


### FIXED CODE ###

def getinputdata():

    array_result = []
    
    data = input()
    array_result.append(data.split(" "))

    flg = 1

    try:

        while flg:

            data = input()

            if(data != ""):
                
                array_result.append(data.split(" "))

                flg = 1

            else:

                flg = 0
    finally:


        return array_result

arr_data = getinputdata()

#maxvalue
k = int(arr_data[0][0])

#sumvalue
s = int(arr_data[0][1])

cnt = 0

for x in range(0, k + 1):
    
    for y in range(0, k + 1):
        
        z = s-x-y
        
        if z >= 0 and z <= k:
            
            cnt += 1
            
print(cnt)
### BUGGY CODE ###

N = int(input())
ans = []
for _ in range(N):
    a = int(input())
    if a not in ans:
        ans.append(a)
    else:
        ans.remove(a)
print(len(ans))

### FIXED CODE ###

from collections import Counter
N = int(input())
ans = Counter([int(input()) for _ in range(N)])
cnt = 0
for c in ans.values():
    if c%2 == 1:
        cnt += 1
print(cnt)
### BUGGY CODE ###

h,n=(int(i) for i in input().split())
l=[]
for i in range(n):
  a,b=(int(i) for i in input().split())
  l.append([a,b])
pocket=[0]
for i in range(h):
  mini=pocket[max(0,i+1-l[0][0])]+l[0][1]
  for j in range(n-1):
    a=l[j+1][0]
    b=l[j+1][1]
    if pocket[max(0,i+1-a)]+b<mini:
      mini=pocket[max(0,i+1-a)]+b
  pocket.append(mini)
print(pocket[h])

### FIXED CODE ###

h,n=(int(i) for i in input().split())
l=[]
for i in range(n):
  a,b=(int(i) for i in input().split())
  l.append([a,b])
pocket=[0]
for i in range(h):
  mini=pocket[max(0,i+1-l[0][0])]+l[0][1]
  for j in range(n-1):
    a=l[j+1][0]
    b=l[j+1][1]
    if pocket[max(0,i+1-a)]+b<mini:
      mini=pocket[max(0,i+1-a)]+b
  pocket.append(mini)
print(pocket[h])
### BUGGY CODE ###

n=int(input())
ans=1
while(ans<=n):
    ans*2
print(ans//2)

### FIXED CODE ###

n=int(input())
ans=1
while ans<=n:
    ans*=2
print(ans//2)
### BUGGY CODE ###

import sys
input = sys.stdin.readline
from heapq import heappush, heappop
def min_cost_flow_dijkstra(E, s, t, f):
    INF = 1 << 100
    NN = 2 * N + 6
    LN = NN.bit_length()
    G = [[] for _ in range(NN)]
    for a, b, cap, c in E:
        G[a].append([b, cap, c, len(G[b])])
        G[b].append([a, 0, -c, len(G[a])-1])
    prevv = [-1] * NN
    preve = [-1] * NN
    res = 0
    h = [0] * NN
    while f > 0:
        dist = [INF] * NN
        dist[s] = 0
        update = 1
        Q = []
        heappush(Q, s)
        while len(Q):
            x = heappop(Q)
            d, v = -(x>>LN), x % (1<<LN)
            if dist[v] < d: continue
            for i, (w, _cap, c, r) in enumerate(G[v]):
                if _cap > 0 and dist[w] > dist[v] + c + h[v] - h[w]:
                    dist[w] = dist[v] + c + h[v] - h[w]
                    prevv[w] = v
                    preve[w] = i
                    heappush(Q, (-dist[w] << LN) + w)
        if dist[t] == INF:
            return -1
        d = f
        v = t
        while v != s:
            d = min(d, G[prevv[v]][preve[v]][1])
            v = prevv[v]
        f -= d
        res += d * dist[t]
        v = t
        while v != s:
            G[prevv[v]][preve[v]][1] -= d
            G[v][G[prevv[v]][preve[v]][3]][1] += d
            v = prevv[v]
    return res

E = []
N = int(input())
su = 0
inf = 1 << 31
for i in range(N):
    x, y, cnt = map(int, input().split())
    E.append((2*N+4, i, cnt, 0))
    E.append((i, 2*N, cnt, x + y + inf))
    E.append((i, 2*N+1, cnt, x - y + inf))
    E.append((i, 2*N+2, cnt, - x + y + inf))
    E.append((i, 2*N+3, cnt, - x - y + inf))
    su += cnt

for i in range(N):
    x, y, cnt = map(int, input().split())
    E.append((i+N, 2*N+5, cnt, 0))
    E.append((2*N, i+N, cnt, - x - y + inf))
    E.append((2*N+1, i+N, cnt, - x + y + inf))
    E.append((2*N+2, i+N, cnt, x - y + inf))
    E.append((2*N+3, i+N, cnt, x + y + inf))

print(su * inf * 2 - min_cost_flow_dijkstra(E, 2*N+4, 2*N+5, su))

### FIXED CODE ###

from networkx import*
N = int(input())
G = MultiDiGraph()
for i in range(N):
    x, y, c = map(int, input().split())
    G.add_node(i, demand = -c)
    G.add_weighted_edges_from([(i, -1, x + y)], capacity = c)
    G.add_weighted_edges_from([(i, -2, x - y)], capacity = c)
    G.add_weighted_edges_from([(i, -3, -x + y)], capacity = c)
    G.add_weighted_edges_from([(i, -4, -x - y)], capacity = c)
for i in range(N):
    x, y, c = map(int, input().split())
    G.add_node(N + i, demand = c)
    G.add_weighted_edges_from([(-1, N + i, -x - y)], capacity = c)
    G.add_weighted_edges_from([(-2, N + i, -x + y)], capacity = c)
    G.add_weighted_edges_from([(-3, N + i, x - y)], capacity = c)
    G.add_weighted_edges_from([(-4, N + i, x + y)], capacity = c)

print(-min_cost_flow_cost(G))