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

X,Y,A,B,C=map(int,input().split())
p=list(map(int,input().split()))
q=list(map(int,input().split()))
r=list(map(int,input().split()))
p.sort()
q.sort()
p.reverse()
q.reverse()
p=p[:X]
q=q[:Y]
r=r[:max(X,Y)]
 
a=p[:]
a.extend(q)
a.extend(r)
a.sort()
a.reverse()
b=q[:]
b.extend(r)
b.sort()
b.reverse()
c=p[:]
c.extend(r)
c.sort()
c.reverse()
red=0
green=0
sum=0
sum1=0
sum2=0
d=0
for i in range(X+Y):
  if(a[i] in p):
    red+=1
  elif(a[i] in q):
    green+=1
  d+=a[i]
 
  if(i<X):
      sum1+=p[i]
      sum2+=c[i]
  if(i<Y):
      sum1+=b[i]
      sum2+=q[i]
    
if(red<=X and green<=Y):
  print(d)
elif(red>X):
  print(sum1)
elif(green>Y):
  print(sum2)

### FIXED CODE ###

X,Y,A,B,C=map(int,input().split())
p=list(map(int,input().split()))
q=list(map(int,input().split()))
r=list(map(int,input().split()))
p.sort()
q.sort()
p.reverse()
q.reverse()
p=p[:X]
q=q[:Y]
 
a=p[:]
a.extend(q)
a.extend(r)
a.sort()
a.reverse()
sum=0
for i in range(X+Y):
  sum+=a[i]
print(sum)
### BUGGY CODE ###

from math import gcd

N = 1000001
 
spf = [*range(N)]
i = 2
while i * i < N:
  if spf[i] == i:
    for j in range(i * i, N, i):
      if spf[j] == j:
        spf[j] = i
  i += 1
  
r = 'pairwise'

input()
d = None
p = 1
for x in map(int, input().split()):
  d = gcd(d or x, x)
  e = gcd(p, x)
  if e > 1:
    r = 'setwise'
  p = p // e * x
print((r, 'not')[d > 1], 'coprime')


### FIXED CODE ###

N = 1000001
 
spf = [*range(N)]
i = 2
while i * i < N:
  if spf[i] == i:
    for j in range(i * i, N, i):
      if spf[j] == j:
        spf[j] = i
  i += 1
  
r = 'pairwise'
n = int(input())
a = [int(x) for x in input().split() if x > '1']
if len(a) > 1:
  u = set()
  i = None
  for x in a:
    s = set()
    while x > 1:
      p = spf[x]
      if p in u:
        r = 'setwise'
      s.add(p)
      x //= p
    u |= s
    if len(a) == n:
      if i is None: i = s
      else: i &= s
  if i:
    r = 'not'
print(r, 'coprime')
### BUGGY CODE ###

import numpy as np
import functools
import math
import collections
import scipy
import fractions
import itertools
 
def solve():
    n, k = map(int, input().split())
    a = list(map(int, input().split()))
    now = 0
    hoge= []
    bit = 0
    piyo = 0
    huga = []
    for i in range(k):
        hoge.append(now)
        now = a[now]-1
        if now in hoge:
            huga = hoge[hoge.index(now):len(hoge)]
            piyo = hoge.index(now)
            bit = 1
            break
    if bit == 1:
        ans = huga[(k-piyo)%len(huga)]
        print(ans+1)
    else:
        now = 0
        for i in range(k):
            now = a[now]-1
        print(now+1)
    return 0
 
if __name__ == "__main__":
    solve()

### FIXED CODE ###

def main():
    N, K = map(int, input().split())
    A = [a-1 for a in map(int, input().split())]    # 0-indexed に変換
    B = [None]*N    # 何ステップ目に到達したかを記録。Noneなら未到達を表す
    now = 0         # 現在地
    step = 0        # ステップ数
    B[now] = 0      # 開始地点は、0ステップ目に到達済みとする
    while K:
        now = A[now]    # 現在地を更新 
        step += 1
        K -= 1
        if B[now] is not None:  # ループを検出したら...
            K %= (step - B[now])      # Kからループ長さを引けるだけ引く
        else:
            B[now] = step  # 到達したステップ数を記録
    print(now+1)    # 1-indexed に再変換
 
main()
### BUGGY CODE ###

from bisect import bisect
N, M = map(int, input().split())
A = sorted([int(i) for i in input().split()])
BC = [[int(i) for i in input().split()] for i in range(M)]
BC = sorted(BC, key=lambda x:-x[1])
ans = 0
for b, c in BC:
    i = bisect(A, c)
    i = min(i, b)
    A = A[i:]
    ans += c * i
print(ans+sum(A))

### FIXED CODE ###

from bisect import bisect
N, M = map(int, input().split())
A = sorted([int(i) for i in input().split()])
BC = [[int(i) for i in input().split()] for i in range(M)]
BC = sorted(BC, key=lambda x:-x[1])
ans = 0
offset=0

for b, c in BC:
    i = bisect(A, c, lo=offset)
    i = min(i-offset, b)
    ans += c * i
    offset += i

print(ans+sum(A[offset:]))
### BUGGY CODE ###

from statistics import median
#import collections
#aa = collections.Counter(a) # list to list || .most_common(2)で最大の2個とりだせるお a[0][0]
from fractions import gcd
from itertools import combinations # (string,3) 3回
from collections import deque
from collections import defaultdict
import bisect
#
#    d = m - k[i] - k[j]
#    if kk[bisect.bisect_right(kk,d) - 1] == d:
#
#
#
# pythonで無理なときは、pypyでやると正解するかも！！
#
#

import sys
sys.setrecursionlimit(10000000)
mod = 10**9 + 7

def readInts():
  return list(map(int,input().split()))
def main():
    X = int(input())
    import math
    b = 10**6
    #for b in range(-200000,200000,1):
    while True:
        a = X + pow(b,5)
        if a != 0:
            p = pow(a,-5)
        #print(a,b,p)
        if int(p) == p:
            print(a,b)
            exit()
        b -= 1
if __name__ == '__main__':
  main()


### FIXED CODE ###

from statistics import median
#import collections
#aa = collections.Counter(a) # list to list || .most_common(2)で最大の2個とりだせるお a[0][0]
from fractions import gcd
from itertools import combinations # (string,3) 3回
from collections import deque
from collections import defaultdict
import bisect
#
#    d = m - k[i] - k[j]
#    if kk[bisect.bisect_right(kk,d) - 1] == d:
#
#
#
# pythonで無理なときは、pypyでやると正解するかも！！
#
#

import sys
sys.setrecursionlimit(10000000)
mod = 10**9 + 7

def readInts():
  return list(map(int,input().split()))
def main():
    X = int(input())
    import math
    for i in range(-119,119):
        for j in range(-119,119):
            if i == j:
                continue
            if X % (i - j) == 0:
                if (i-j) * (pow(i,4) + pow(i,3)*j + pow(i,2)*pow(j,2) + i*pow(j,3) + pow(j,4)) == X:
                    print(i,j)
                    exit()
if __name__ == '__main__':
  main()
### BUGGY CODE ###

n = int(input())
A = list(map(int, input().split()))
b = []
for i in range(n):
    b.append(A[i])
    b = b[::-1]
print(*b)

### FIXED CODE ###

n = int(input())
A = list(map(int, input().split()))[::-1]
b = []
c = []
for i in range(n):
    if i % 2 == 0:
        b.append(A[i])
    else:
        c.append(A[i])
b.extend(c[::-1])
print(*b)
### BUGGY CODE ###

a, b = map(int, input().split())
count = 0
for i in range(a+1):
    for j in range(a+1):
        for k in range(a+1):
            if i + j + k == b:
                count += 1
print(count)

### FIXED CODE ###

a, b = map(int, input().split())
c = a+1
count = 0
for i in range(c):
    for j in range(c):
        if 0 <= (b - i - j) <= a:
            count += 1
print(count)
### BUGGY CODE ###

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

memory = []

count = 0

for i in range(N):
    if i in memory:
        break
    for j in range(i + 1):
        if Ps[i] > Ps[j]:
            memory.append(j)
            break
        if i == j:
            count+=1

print(count)

### FIXED CODE ###

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

count = 0

minimum = Ps[0]

for i in range(N):
    if minimum >= Ps[i]:
        minimum = Ps[i]
        count+=1

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

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

l = [0] * (10 ** 5 + 1)
ans = []
for e in a:
    l[e] += 1

for _ in range(q):
    b, c = map(int, input().split())
    l[c] += l[b]
    l[b] = 0
    sum = 0
    for i, e in enumerate(l):
        sum += i * e
    ans.append(sum)

for sum in ans:
    print(sum)

### FIXED CODE ###

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

l = [0] * 100001
for i in a:
    l[i] += 1

s = sum(a)

for _ in range(q):
    b, c = map(int, input().split())
    s += (c - b) * l[b]
    l[c] += l[b]
    l[b] = 0
    print(s)
### BUGGY CODE ###

n = int(input())
a_list = [int(i) for i in input().split()]
divide = 10 ** 9 + 7

sum = 0
for i in range(n):
    for j in range(i+1, n):
        # print(a_list[i], a_list[j] , a_list[i] ^ a_list[j])
        sum += (a_list[i] ^ a_list[j])

print(sum % divide)

### FIXED CODE ###

n = int(input())
divide = 10 ** 9 + 7

a = [format(i, '060b') for i in map(int, input().split())]
ans = []

for i in range(60):
    bit_list = [b[59-i] for b in a]
    val = bit_list.count('0') * bit_list.count('1')
    ans.append((val * 2 ** i))

print(sum(ans)%divide)
### BUGGY CODE ###

from collections import deque
n,c,k=map(int,input().split())
l=sorted([int(input()) for _ in range(n)],reverse=True)
ans=0
d=deque(l)
while len(d)!=0:
    ans+=1
    t=d.popleft()
    for i in range(c-1):
        if len(d)!=0 and d[0]>=t-k:
            d.popleft()
print(ans)

### FIXED CODE ###

from collections import deque
n,c,k=map(int,input().split())
l=sorted([int(input()) for _ in range(n)],reverse=True)
ans=0
d=deque(l)
while len(d)!=0:
    ans+=1
    t=d.popleft()
    cnt=1
    while len(d)!=0 and d[0]>=t-k and cnt<c:
        d.popleft()
        cnt+=1
print(ans)
### BUGGY CODE ###

s=input()
MOD=10**9+7
dp=[[0 for i in range(13)] for j in range(2)]

if s[0]=='?':
  for i in range(10):
    dp[0][i]=1
else:
  dp[0][int(s[0])]=1

i=1
for c in s[1:]:
  c = -1 if c=='?' else int(c)

  D=dp[i%2]
  S=dp[(i-1)%2]
  if c==-1:
    for j in range(10):
      for k in range(13):
        D[(k*10+j)%13]+=S[k]
  else:
    for k in range(13):
      D[(k*10+c)%13]+=S[k]

  for j in range(13):
    S[j]=0
    D[j]%=MOD
  i += 1

print(dp[(i-1)%2][5])


### FIXED CODE ###

S=input()
a=[0]*13
a[0]= 1

for c in S:
  dp=[0]*13
  for i in range(13):
    dp[(i*10)%13]=a[i]%(10**9+7)
  dp+=dp

  if c=='?':
    for i in range(13):
      a[i]=sum(dp[i+4:i+14])
  else:
    for i in range(13):
      a[i]=dp[i+13-int(c)]

print(a[5]%(10**9+7))
### BUGGY CODE ###

#!/usr/bin/env python3
import sys

def solve(N: int, M: int, P: int, A: "List[int]", B: "List[int]", C: "List[int]"):
    dist = [sys.maxsize] * (N + 1)

    dist[1] = 0
    for _ in range(N):
        for j in range(M):
            weight = -(C[j] - P)
            if dist[B[j]] > dist[A[j]] + weight:
                dist[B[j]] = dist[A[j]] + weight

    result = -dist[N]

    for _ in range(N + 1):
        for j in range(M):
            weight = -(C[j] - P)
            if dist[B[j]] > dist[A[j]] + weight:
                dist[B[j]] = dist[A[j]] + weight

    if result != -dist[N]:
        print(-1)
    else:
        print(max(-dist[N], 0))


# Generated by 1.1.4 https://github.com/kyuridenamida/atcoder-tools  (tips: You use the default template now. You can remove this line by using your custom template)
def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    N = int(next(tokens))  # type: int
    M = int(next(tokens))  # type: int
    P = int(next(tokens))  # type: int
    A = [int()] * (M)  # type: "List[int]"
    B = [int()] * (M)  # type: "List[int]"
    C = [int()] * (M)  # type: "List[int]"
    for i in range(M):
        A[i] = int(next(tokens))
        B[i] = int(next(tokens))
        C[i] = int(next(tokens))
    solve(N, M, P, A, B, C)

if __name__ == '__main__':
    main()


### FIXED CODE ###

import sys

def solve(N: int, M: int, P: int, A: "List[int]", B: "List[int]", C: "List[int]"):
    dist = [sys.maxsize] * (N + 1)

    dist[1] = 0
    for _ in range(N):
        for j in range(M):
            weight = -(C[j] - P)
            if dist[B[j]] > dist[A[j]] + weight:
                dist[B[j]] = dist[A[j]] + weight

    result = -dist[N]

    for _ in range(N + 1):
        for j in range(M):
            weight = -(C[j] - P)
            if dist[B[j]] > dist[A[j]] + weight:
                dist[B[j]] = dist[A[j]] + weight

    if result != -dist[N]:
        print(-1)
    else:
        print(max(-dist[N], 0))


# Generated by 1.1.4 https://github.com/kyuridenamida/atcoder-tools  (tips: You use the default template now. You can remove this line by using your custom template)
def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    N = int(next(tokens))  # type: int
    M = int(next(tokens))  # type: int
    P = int(next(tokens))  # type: int
    A = [int()] * (M)  # type: "List[int]"
    B = [int()] * (M)  # type: "List[int]"
    C = [int()] * (M)  # type: "List[int]"
    for i in range(M):
        A[i] = int(next(tokens))
        B[i] = int(next(tokens))
        C[i] = int(next(tokens))
    solve(N, M, P, A, B, C)

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


from fractions import Fraction
from decimal import Decimal
n = int(input())
a = []
b = []
for i in range(0,n):
	c = float(input())
	a.append(c)
	d = str(a[i])
	f = Fraction(Decimal(d))
	b.append(f)

x = []
y = []

for i in range(0,n):
	x.append(b[i].numerator)
	y.append(b[i].denominator)

count = 0

for i in range(0,n)	:
	for j in range(i+1,n):
		if (x[i]*x[j]) % (y[i]*y[j]) == 0:
			count += 1

print(count)

### FIXED CODE ###

from math import gcd
from collections import Counter
import sys

N = int(input())
K = 10**9
L = 10**18
A = [0] * N
C = Counter()
ans = 0

for i in range(N):
	A[i] = round(K * float(input()))
	C[gcd(A[i],L)] += 1 
	
for k1,v1 in C.items():
	for k2 ,v2 in C.items():
		if k1 == k2:
			if k1*k2 % L == 0:
				ans += v1*(v1-1)/2
		elif k1 < k2:
			if k1*k2 % L == 0:
				ans += v1 * v2

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

N = int(input())
An = [int(x) for x in input().split()]

for i in range(1, N+1):
    print(An.count(i))

### FIXED CODE ###

N = int(input())
An = [int(x) for x in input().split()]

mylist = [0] * N

for i in An:
    mylist[i-1] = mylist[i-1] + 1

for i in mylist:
    print(i)
### BUGGY CODE ###

import sys
input=sys.stdin.readline
from itertools import accumulate
import numpy as np
def main():
  n,k=map(int,input().split())
  a=np.array(list(map(int,input().split())))
  k=k if k<50 else 50
  for _ in range(k):
    b=np.zeros(n+1,dtype=int)
    for i in range(n):
      ai=a[i]
      l,r=i-ai,i+ai+1
      l=0 if l<0 else l
      r=n if r>n else r
      b[l]+=1
      b[r]-=1
    b=tuple(accumulate(b))[:-1]
    a=b
    if min(set(b))==n:
      break
  print(*a)
if __name__ == '__main__':
  main()

### FIXED CODE ###

import sys
input=sys.stdin.readline
from itertools import accumulate
def main():
  n,k=map(int,input().split())
  a=list(map(int,input().split()))
  k=k if k<50 else 50
  for _ in range(k):
    b=[0]*(n+1)
    for i in range(n):
      ai=a[i]
      l,r=i-ai,i+ai+1
      l=0 if l<0 else l
      r=n if r>n else r
      b[l]+=1
      b[r]-=1
    b=tuple(accumulate(b))[:-1]
    a=b
    if min(set(b))==n:
      break
  print(*a)
if __name__ == '__main__':
  main()
### BUGGY CODE ###

n,a = map(int,input().split())
x = list(map(int,input().split()))
cnt = 0
for i in range(1 << n):
    ans=[]
    for j in range(n):
        if (i >> j) & 1:
            ans.append(x[j])
    if ans and sum(ans)/len(ans) == a:
        cnt+=1
print(cnt)

### FIXED CODE ###

N,A = map(int,input().split())
X = list(map(int,input().split()))
Y = [x-A for x in X]
dp = {0:1}

for y in Y:
  tmp = list(dp.items())
  for k,v in tmp:
    dp[k+y]=dp.get(k+y,0)+v

print(dp[0]-1)
### BUGGY CODE ###

from collections import deque
import sys
from collections import defaultdict
import copy
# input = sys.stdin.readline



H, W = map(int, input().split())
C = [list(input()) for _ in range(H)]
gone = [[0] * W for _ in range(H)]
cot = 0
que = deque()
next_que =  deque()

for h in range(H):
    for w in range(W):
        if C[h][w] == "#":
            gone[h][w] = 1
            next_que.append((h,w))
            cot += 1
INF = 10 ** 9
go = [[1, 0], [0, 1], [-1, 0], [0, -1]]
ans  = 0
que = next_que
while cot != H*W:
    que = copy.deepcopy(next_que)
    next_que = deque()
    while que:
        h,w = que.popleft()
        for temp in go:
            gx,gy = temp
            nx = w + gx
            ny = h + gy
            if 0<= nx < W and 0<= ny < H and gone[ny][nx] != 1: #行って無かったら，行く
                gone[ny][nx] = 1
                next_que.append( (ny,nx))
                cot += 1
    ans += 1
print(ans)





### FIXED CODE ###

from collections import deque
import sys
from collections import defaultdict
import copy
# input = sys.stdin.readline



H, W = map(int, input().split())
C = [list(input()) for _ in range(H)]
gone = [[0] * W for _ in range(H)]
cot = 0
que = deque()

que_count = 0
for h in range(H):
    for w in range(W):
        if C[h][w] == "#":
            gone[h][w] = 1
            que.append((h,w))
            que_count += 1
            cot += 1
INF = 10 ** 9
go = [[1, 0], [0, 1], [-1, 0], [0, -1]]
ans  = 0
nq = 0
while cot != H*W:
    while que_count != 0 and cot != H*W:
        h,w = que.popleft()
        que_count -= 1

        for temp in go:
            # この時，実際に行くのかは不明
            gx,gy = temp
            nx = w + gx
            ny = h + gy

            if 0<= nx < W and 0<= ny < H and gone[ny][nx] != 1: #行って無かったら，行く
                # この時に実際に移動する
                gone[ny][nx] = 1
                que.append( (ny,nx))
                nq += 1
                cot += 1
    que_count = nq
    nq = 0
    ans += 1
print(ans)
### BUGGY CODE ###

x=int(input())
a=0
b=0
for i in range(-x,x):
  for j in range(-x,x):
    if i**5-j**5==x:
      a=i
      b=j
print(a),print(b)

### FIXED CODE ###

x=int(input())
a=0
b=0
for i in range(-500,500):
  for j in range(-500,500):
    if i**5-j**5==x:
      a=i
      b=j
      break
  else:
    continue
  break
print(a,b)
### BUGGY CODE ###

n, k = map(int, input().split())
xy = []
for i in range(n):
    xy.append(list(map(int, input().split())))
s = []
x = [xy[i][0] for i in range(n)]
y = [xy[i][1] for i in range(n)]
x.sort()
y.sort()
for i in range(n):
    for j in range(n):
        for l in range(i + 1, n):
            x1 = x[i]
            y1 = y[j]
            x2 = x[l]
            y2 = j - 1
            count = 0
            while count < k:
                y2 += 1
                if y2 >= n:
                    break
                for m in range(n):
                    if y[y2] == y1:
                        if x1 <= xy[m][0] <= x2 and xy[m][1] == y1:
                            count += 1
                    elif x1 <= xy[m][0] <= x2 and y[y2 - 1] < xy[m][1] <= y[y2]:
                        count += 1
            else:
                s.append((x2 - x1) * (y[y2] - y1))
print(min(s))

### FIXED CODE ###

n, k = map(int, input().split())
xy = []
X = []
Y = []
for i in range(n):
    x, y = map(int, input().split())
    X.append(x)
    Y.append(y)
    xy.append([x, y])
X.sort()
Y.sort()
ans = float("inf")
for i in range(n):
    for j in range(i + 1, n):
        for l in range(n):
            for m in range(l + 1, n):
                count = 0
                for o in range(n):
                    if X[i] <= xy[o][0] <= X[j] and Y[l] <= xy[o][1] <= Y[m]:
                        count += 1
                if count >= k:
                    ans = min(ans, (X[j] - X[i]) * (Y[m] - Y[l]))
print(ans)
### BUGGY CODE ###

n, b, r = map(int,input().split())
l = list()
k = 0
for i in range(0,n):
  for j in range(b):
    l.append('b')
  for j in range(r):
    l.append('r')   
print(l[0:n].count('b'))

### FIXED CODE ###

n, b, r = map(int,input().split())
a = n//(b+r) * b
c = n%(b+r)
a += min(c,b)
print(a)
### BUGGY CODE ###

n= int(input())
a=list(input())

v=a.count('1')

ans=[0]*n
A=[0]*n
# n以下の残り回数を記録
for i in range(n):
    x=i
    cnt=0
    while x>0:
        cnt+=1
        r = 0
        for j in range(20):
            if (x>>j)&1:
                r+=1
        x=x%r
    ans[i]=cnt

# 各桁をv＋１で割ったあまり
q = [0]*n
# 各桁をv-1で割ったあまり
r = [0]*n
for i in range(n):
    if a[i]=='1':
        if v!=0:
            q[i] = pow(2, n-i-1) % (v + 1)
        if v!=1:
            r[i] += pow(2, n-i-1) % (v - 1)
qq=sum(q)
rr=sum(r)

for i in range(n):
    if a[i]=='1':
        if v!=1:
            z = rr - pow(2,n-i-1)%(v-1)
            cnt = z % (v - 1)
            A[i] = 1 + ans[cnt]
    else:
        z=qq+pow(2,n-i-1)%(v+1)
        cnt=z%(v+1)
        A[i]=1+ans[cnt]

for i in A:
    print(i)

### FIXED CODE ###

import sys
input = lambda: sys.stdin.readline().rstrip()

n= int(input())
a=list(input())

v=a.count('1')

ans=[0]*n
A=[0]*n
# n以下の残り回数を記録
for i in range(n):
    x=i
    cnt=0
    while x>0:
        cnt+=1
        r = 0
        for j in range(19):
            if (x>>j)&1:
                r+=1
            if x>>j==0:
                break
        x=x%r
    ans[i]=cnt

# 各桁をv＋１で割ったあまり
q = [0]*n
# 各桁をv-1で割ったあまり
r = [0]*n
for i in range(n):
    if a[i]=='1':
        if v!=0:
            q[i] = pow(2, n-i-1,v+1) 
        if v!=1:
            r[i] += pow(2, n-i-1,v-1) 
qq=sum(q)
rr=sum(r)

for i in range(n):
    if a[i]=='1':
        if v!=1:
            z = rr - pow(2,n-i-1,v-1)
            cnt = z % (v - 1)
            A[i] = 1 + ans[cnt]
    else:
        z=qq+pow(2,n-i-1,v+1)
        cnt=z%(v+1)
        A[i]=1+ans[cnt]

for i in A:
    print(i)
### BUGGY CODE ###

from collections import deque
import math
import sys

N_MAX = 200000 + 5
sys.setrecursionlimit(N_MAX)

H, W, K = map(int, sys.stdin.readline().split())
x1, y1, x2, y2 = map(int, sys.stdin.readline().split())
INF = 10**6 * K

dp = [[INF for _ in range(W+2)] for _ in range(H+2)]

dp[0] = [-1]*(W+2)
dp[H+1] = [-1]*(W+2)
for h in range(1,H+1):
    s = sys.stdin.readline()
    dp[h][0] = -1
    dp[h][W+1] = -1
    for w in range(1,W+1):
        if s[w-1] == "@":
            dp[h][w] = -1

### BFS ###

# ステップ方向
D = [0, 1, 2, 3]  # direction
Y = [1, 0, -1, 0]
X = [0, 1, 0, -1]

def bfs(x1, y1, x2, y2):
    
    q = deque()
    q.append((x1, y1))

    while q:
        # print(q)
        x0, y0 = q.popleft()

        for x, y in zip(X, Y):

            for i in range(1,K+1):

                # print(y0,y,x0,x,d, (y0+y,x0+x,d), end=" : ")
                dp_c = dp[x0][y0]  # 現在のdp値
                n_x, n_y = x0+x*i, y0+y*i

                # print(dp_c, (n_x,n_y), end=" : ")

                if dp[n_x][n_y] == -1:
                    # print("@")
                    break

                if dp[n_x][n_y] <= dp_c + 1:
                    continue

                dp[n_x][n_y] = dp_c + 1

                if n_x == x2 and n_y == y2:
                    return dp[n_x][n_y]
                q.append((n_x, n_y))

    return -1

# スタート地点を 0 にする
dp[x1][y1] = 0

a = bfs(x1,y1,x2,y2)

print(a)

### FIXED CODE ###

#!/usr/bin python3
# -*- coding: utf-8 -*-
 
H, W, K = map(int,input().split())
sth, stw, glh, glw = map(int,input().split())
sth, stw = sth-1, stw-1
glh, glw = glh-1, glw-1
 
INF = -1
Gmap = [list(input()) for _ in range(H)]
Seen = [[INF]*W for _ in range(H)]
direc = {(1,0), (-1,0), (0,1), (0,-1)}
 
from collections import deque
 
def bfs(sth, stw, glh, glw):
    next_q = deque([])
    next_q.append((sth,stw,0))
    Seen[sth][stw] = 0
 
    while len(next_q)!=0:
        #キュー取り出し(先頭)
        h, w, c = next_q.popleft()
        for dh, dw in direc:
            for sk in range(1,K+1):
                hs, ws = h + dh*sk, w + dw*sk
                if not (0<=hs<H and 0<=ws<W):
                    break
                if Gmap[hs][ws]=='@':
                    break
                if Seen[hs][ws]==INF:
                    next_q.append((hs,ws,c+1))
                    Seen[hs][ws] = c + 1
                elif Seen[hs][ws]<=c:
                    break
                if hs==glh and ws==glw:
                    return c + 1
    return -1

def main():
    ret = bfs(sth, stw, glh, glw)
    print(ret)

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

a, b= map(int, input().split())

ans = a
for i in range(a+1, b+1):
    ans = ans ^ i
    
print(ans)

### FIXED CODE ###

import numpy as np
a, b= map(int, input().split())
if a % 2 ==0:
    start = a
    remain_before = 0
else:
    start = a+1
    remain_before = a

if b % 2 ==0:
    end = b-1
    remain_after = b
else:
    end = b
    remain_after = 0

if ((end+1-start) /2) %2 == 0:
    num = 0
else:
    num = 1

print(remain_before ^ num ^ remain_after)