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

from collections import Counter
from itertools import product

N=int(input())
S=list(input())
S_rev=list(reversed(S[N:])) #右側から読んだ右半分の文字を考える

bit=list(product(range(2),repeat=N))
leftlist=[] #左半分の分け方の組み合わせを格納
rightlist=[] #右半分について同様

for i in range(len(bit)):
  red_left=''
  blue_left=''
  red_right=''
  blue_right=''
  for j in range(N):
    if bit[i][j] == 1:
      red_left+=S[j] #bitに1が立っているところを赤に
      blue_right+=S_rev[j]
    else:
      blue_left+=S[j]
      red_right+=S_rev[j]
  leftlist.append("".join(red_left + "|" + blue_left))
  rightlist.append("".join(blue_right + "|" + red_right))
left=Counter(leftlist)
right=Counter(rightlist)

answer=0

for key,value in left.items():
  answer+= value * right[key] #同じkey(分け方）に対するredとblueの通りを掛け合わせる
print(answer)

### FIXED CODE ###

from collections import Counter
from itertools import product

N=int(input())
S=list(input())
S_rev=list(reversed(S[N:])) #右側から読んだ右半分の文字を考える


leftlist=[] #左半分の分け方の組み合わせを格納
rightlist=[] #右半分について同様

for bit in product(range(2),repeat=N):
  #左半分、右半分について赤と青に塗り分ける
  red_left='' 
  blue_left=''
  red_right=''
  blue_right=''
  for j in range(N):
    if bit[j] == 1:
      red_left+=S[j] #bitに1が立っているところを赤に
      blue_right+=S_rev[j]
    else:
      blue_left+=S[j]
      red_right+=S_rev[j]
  leftlist.append("".join(red_left + "|" + blue_left)) #左の塗り方をリストに格納
  rightlist.append("".join(blue_right + "|" + red_right)) #右について同様
left=Counter(leftlist)
right=Counter(rightlist)

answer=0

for key,value in left.items():
  answer+= value * right[key] #同じkey(分け方）に対するredとblueの通りを掛け合わせる
print(answer)
### BUGGY CODE ###

# -*- coding: utf-8 -*-
import sys
import math

N,D,A = map(int,input().split())
XH = [list(map(int,input().split())) for _ in range(N)]
XH.sort()
#%%
ans = 0
damage = 0
for i in range(N):
    d = XH[i][1]
    if d<=0:
        continue
    else:
        c = math.ceil(d/A)
        ans += c
        
        idx = i+1
        while idx<N and XH[idx][0]<=XH[i][0]+2*D :
            XH[idx][1] -= A*c
            idx += 1

print(ans)
            
        
        

### FIXED CODE ###

# -*- coding: utf-8 -*-
import sys
import math
from queue import Queue
N,D,A = map(int,input().split())
XH = [list(map(int,input().split())) for _ in range(N)]
XH.sort()
#%%
bound = [0]*N
idx = 0
right = 0
while idx<N:
    while right < N and (XH[right][0]-XH[idx][0])<=2*D:
        right += 1
    bound[idx] = right  
    idx += 1
def kiriage(n,m):
    return (n+(m-1))//m

heru = [0]*(N+1)
ans = 0
damage = 0
for i in range(N):
    damage -= heru[i]
    
    if XH[i][1]<=damage:
        continue
    cnt = kiriage(XH[i][1]-damage,A)
    ans += cnt
    damage += cnt*A
    heru[bound[i]] += cnt*A
print(ans)
### BUGGY CODE ###

mod = 1000000007
import sys
input = sys.stdin.readline
N, M, K = map(int, input().split())

N2 = N**2
M2 = M**2
Xpattern = [(x * (N-x)) %mod for x in range(N)]
Ypattern = [(y * (M-y)) %mod for y in range(M)]
coef = 1
num = min(K-2, N*M-K)
for i in range(N*M-2, N*M-2-num, -1):
    coef *= i
for j in range(1, num+1):
    coef //= j
coef %= mod

print(((sum(Xpattern)*M2+sum(Ypattern)*N2)*coef)%mod)

### FIXED CODE ###

mod = 1000000007
import sys
input = sys.stdin.readline
N, M, K = map(int, input().split())


def cmb(n, r):
    if n<0 or r<0 or r>n:
        return None
    r = min(r, n-r)
    if r == 0:
        return 1
    if r == 1:
        return n
    numerator = [0]*r
    denominator = [0]*r
    for k in range(r):
        numerator[k] = n-r+k+1
        denominator[k] = k+1
    for p in range(2, r+1):
        pivot = denominator[p-1]
        if pivot > 1:
            offset = (n-r) % p
            for k in range(p-1, r, p):
                numerator[k-offset] //= pivot
                denominator[k] //= pivot
    res = 1
    for n in numerator:
        if n > 1:
            res *= n
    return res

N2 = N**2
M2 = M**2
Xpattern = [(x * (N-x)) % mod for x in range(N)]
Ypattern = [(y * (M-y)) % mod for y in range(M)]
coef = cmb(N*M-2, K-2)

print(((sum(Xpattern)*M2+sum(Ypattern)*N2)*coef)%mod)
### BUGGY CODE ###

M = 1000000007
n, k = map(int, input().split())

graph = [[] for _ in range(n)]

for i in range(n - 1):
    f, t = map(int, input().split())
    graph[f - 1].append(t - 1)
    graph[t - 1].append(f - 1)

visited = [False] * n

visited[0] = True
cnt = 0
ans = k
que = [0]
while que:
    node = que.pop()
    visited[node] = True
    node_cnt = 0
    for next_node in graph[node]:
        if not visited[next_node]:
            que.append(next_node)
            if cnt < 1:
                ans *= k - 1
                cnt += 1
                node_cnt -= 1
            else:
                ans *= (k - (2 + node_cnt))
            node_cnt += 1
print(ans % M)


### FIXED CODE ###

M = 1000000007
n, k = map(int, input().split())

graph = [[] for _ in range(n)]

for i in range(n - 1):
    f, t = map(int, input().split())
    graph[f - 1].append(t - 1)
    graph[t - 1].append(f - 1)

visited = [False] * n

visited[0] = True
cnt = 0
ans = k
que = [0]
while que:
    node = que.pop()
    visited[node] = True
    node_cnt = 0
    for next_node in graph[node]:
        if not visited[next_node]:
            que.append(next_node)
            if cnt < 1:
                ans *= k - 1
                cnt += 1
                node_cnt -= 1
            else:
                ans *= (k - (2 + node_cnt))
                if ans > M:
                    ans %= M
            node_cnt += 1
print(ans % M)
### BUGGY CODE ###

n = int(input())
a = map(int,input().split())
ans = 1
for i in a:
    ans *= i
if ans > 10**18 :
    ans = -1
print(ans)

### FIXED CODE ###

n = int(input())
a = [int(i) for i in input().split()]
if 0 in a:
    print(0)
    quit()
ans = 1
for i in a:
    ans *= i
    #print(i)
    if ans > 10**18:
        ans = -1
        break
print(ans)
### BUGGY CODE ###

s=input()
r=set()
last=0
power=0
d={0:0}
total=0
for i in range(len(s)-1,-1,-1):
    n=int(s[i])*(10**(power))+last
    power+=1
    last=n%2019
    rem=n%2019
    if rem in r:
        d[rem]+=1
        total+=d[rem]-1
    else:
        r.add(rem)
        d[rem]=1
if d[0]==1:
    print(total+1)
else:
    print(total)







### FIXED CODE ###

s=input()
r=set()
last=0
power=1
d={0:0}
total=0
rem=0
for i in range(len(s)-1,-1,-1):#handling of 0's as n and rem
    n=int(s[i])*power+rem
    power*=10
    power=power%2019
    rem=n%2019
    if rem in d.keys():
        d[rem]+=1
    else:
        d[rem]=1
    total+=d[rem]-1
print(total+d[0])
### BUGGY CODE ###

def two_int():
    N, K = map(int, input().split())
    return N,K

def one_int():
    return int(input())

def one_str():
    return input()

def many_int():
    return list(map(int, input().split()))

from collections import defaultdict


N,K = two_int()

dicts = defaultdict(int)
count = 0
for i in range(N):
    a,b = two_int()
    temp = 0
    
    for k,v in dicts.items():
        if k>a:
            dicts[k] += b
        if temp <= k <= a:
            temp = k
            
    dicts[a] = b+dicts[temp]

output = [ [k,v] for k,v in dicts.items()]

temp = sorted(output, key=lambda x: x[0])

ans=0
for i in range(len(temp)-1):
    if temp[i][1] < K <= temp[i+1][1]:
        ans=temp[i+1][0]

print(ans)

### FIXED CODE ###

import sys
input = sys.stdin.readline

def two_int():
    N, K = map(int, input().split())
    return N,K

def one_int():
    return int(input())

def one_str():
    return input()

def many_int():
    return list(map(int, input().split()))

from collections import defaultdict


N,K = two_int()


query = []
for i in range(N):
    query.append(two_int() )

query = sorted(query, key=lambda x: x[0])

ans=0
sums=0
for q in query:
    if sums < K <= sums+q[1]:
        ans=q[0]
        break
    
    sums += q[1]

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

def main():
    n, k = map(int, input().split())
    h = list(map(int, input().split()))
    dp = [0] * n
    dp[0] = 0
    dp[1] = abs(h[1] - h[0])
    for i in range(2, n):
        dp[i] = dp[i - 1] + abs(h[i] - h[i - 1])
        for j in range(2, min(i + 1, k + 1)):
            dp[i] = min(dp[i - j] + abs(h[i] - h[i - j]), dp[i])
    print(dp[n - 1])


if __name__ == '__main__':
    main()


### FIXED CODE ###

def main():
    n, k = map(int, input().split())
    h = list(map(int, input().split()))
    dp = [0] * n
    dp[0] = 0
    dp[1] = abs(h[1] - h[0])
    for i in range(2, n):
        dp[i] = dp[i - 1] + abs(h[i] - h[i - 1])
        for j in range(2, min(i + 1, k + 1)):
            dp[i] = min(dp[i - j] + abs(h[i] - h[i - j]), dp[i])
    print(dp[n - 1])


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

from itertools import combinations
N,K=map(int,input().split())
px = [0 for _ in range(N)]
py = [0 for _ in range(N)]
for i in range(N):
  px[i],py[i] = list(map(int,input().split()))
a=10**20
for c in combinations(range(N), K):
  px_ = [px[i] for i in c]
  py_ = [py[i] for i in c]
  dx = max(px_)-min(px_)
  dy = max(py_)-min(py_)
  a  = min(a, dx*dy)
print(a)


### FIXED CODE ###

N,K=map(int,input().split())
p = sorted([[int(_) for _ in input().split()] for i in range(N)])
a=10**20
for xi in range(N-K+1):
  for xj in range(xi+K-1,N):
    q = sorted(y for x,y in p[xi:xj+1])
    for yi in range(xj-(xi+K-1)+1):
      yj = yi+K-1 #Is the number always K?
      if q[yi]<=p[xi][1] and p[xj][1]<=q[yj]:
        a = min(a, (p[xi][0]-p[xj][0])*(q[yi]-q[yj]))
print(a)
### BUGGY CODE ###

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

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

cnt = [0 for _ in range(N)]
for _ in range(Q):
  p, x = map(int, input().split())
  p -= 1
  cnt[p] += x

queue = [[0, -1]]
while len(queue) > 0:
  q = queue.pop(0)
  if q[0] != 0:
    cnt[q[0]] += cnt[q[1]]
  for i in to[q[0]]:
    if i != q[1]:
      queue.append([i, q[0]])

for i in range(N):
  print(cnt[i], end = "")
  if i == N - 1:
    print()
  else:
    print(" ", end = "")

### FIXED CODE ###

from collections import deque
n, Q = map(int, input().split())
edges = [[] for _ in range(n+1)]
count = [0]*(n+1)
q = deque()
q.append((1, 0))

for _ in range(n-1):
    a, b = map(int, input().split())
    edges[a].append(b)
    edges[b].append(a)
for _ in range(Q):
    p, x = map(int, input().split())
    count[p] += x

while(q):
    k = q.popleft()
    count[k[0]] += count[k[1]]
    for i in edges[k[0]]:
        if not i == k[1]:
            q.append((i, k[0]))

print(*count[1:])
### BUGGY CODE ###

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

class BIT:
    def __init__(self, n):
        self.n = n
        self.bit = [0]*(n+1)
    
    def add(self, i, x):
        i += 1
        
        while i<=self.n:
            self.bit[i] += x
            i += i&(-i)

    def acc(self, i):
        s = 0
        
        while i>0:
            s += self.bit[i]
            i -= i&(-i)
        
        return s

N, Q = map(int, input().split())
c = list(map(int, input().split()))
prev = [-1]*N
ys = defaultdict(list)

for i in range(N):
    if prev[c[i]-1]!=-1:
        ys[prev[c[i]-1]].append(i)
    
    prev[c[i]-1] = i

lr = [(i,)+tuple(map(int, input().split())) for i in range(Q)]
lr.sort(key=lambda t: t[1], reverse=True)
idx = 0
bit = BIT(N)
ans = []

for x in range(N-1, -1, -1):
    for y in ys[x]:
        bit.add(y, 1)
    
    while idx<Q and lr[idx][1]-1==x:
        i, l, r = lr[idx][0], lr[idx][1]-1, lr[idx][2]-1
        ans.append((i, r-l+1-bit.acc(r+1)))
        idx += 1
    
ans.sort(key=lambda t: t[0])

for ans_i in ans:
    print(ans_i[1])

### FIXED CODE ###

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

class BIT:
    def __init__(self, n):
        self.n = n
        self.bit = [0]*(n+1)
    
    def add(self, i, x):
        i += 1
        
        while i<=self.n:
            self.bit[i] += x
            i += i&(-i)

    def acc(self, i):
        s = 0
        
        while i>0:
            s += self.bit[i]
            i -= i&(-i)
        
        return s

N, Q = map(int, input().split())
c = list(map(int, input().split()))
prev = [-1]*N
ys = defaultdict(list)

for i in range(N):
    if prev[c[i]-1]!=-1:
        ys[prev[c[i]-1]].append(i)
    
    prev[c[i]-1] = i

que = defaultdict(list)

for i in range(Q):
    l, r = map(int, input().split())
    que[l-1].append((i, r-1))
    
idx = 0
bit = BIT(N)
ans = [-1]*Q

for x in range(N-1, -1, -1):
    for y in ys[x]:
        bit.add(y, 1)
    
    for i, r in que[x]:
        ans[i] = r-x+1-bit.acc(r+1)

for ans_i in ans:
    print(ans_i)
### BUGGY CODE ###

from collections import Counter
N,K = map(int, input().split())
A = Counter(list(map(int, input().split())))
B = A.items()
k = len(B) - K
if k <= 0:
    print(0)
else:
    print(sum([sorted(B,key=lambda x:x[1])[i][1] for i in range(k)]))

### FIXED CODE ###

from collections import Counter
N,K = map(int, input().split())
A = Counter(list(map(int, input().split())))
B = A.values()
k = len(B) - K
if k <= 0:
    print(0)
else:
    print(sum(sorted(B)[0:k]))
### BUGGY CODE ###

d, n = map(int, input().split())
x = 100 ** d
y = 0
cnt = 0
while cnt < n:
    y += x
    #if y % (100 ** (d + 1)) == 0:
    if y % 100 == 0:
        continue
    cnt += 1
    #print("x={}, y={}, cnt={}".format(x, y, cnt))
print(y)


### FIXED CODE ###

d, n = map(int, input().split())
x = 100 ** d
y = 0
cnt = 0
while cnt < n:
    y += x
    #if d == 0 and y % 100 == 0:
    if y % (100 ** (d + 1)) == 0:
        continue
    cnt += 1
    #print("x={}, y={}, cnt={}".format(x, y, cnt))
print(y)
### BUGGY CODE ###

N=int(input())

ans=[]

for i in range(N):
  a=int(input())
  if a in ans:
    ans.remove(a)
  else:
    ans.append(a)
  

print(len(ans))

### FIXED CODE ###

N=int(input())

a=[0]*N

for i in range(N):
  a[i]=int(input())
  
a.sort()
count=1
ans=[]

for i in range(N-1):
  if a[i]==a[i+1]:
    count+=1
  else:
    if count%2==1:
      ans.append(a[i])
    count=1
    
if count%2==1:
  ans.append(a[i])

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

s = input()
t = input()
dp = [[0 for i in range(len(s)+1)] for j in range(len(t)+1)]
for i in range(len(t)):
    for j in range(len(s)):
        if s[j] == t[i]:
            dp[i+1][j+1] = max(dp[i][j]+1,dp[i+1][j],dp[i][j+1])
        else:
            dp[i+1][j+1] = max(dp[i+1][j],dp[i][j+1])

ans = ''
i = len(t)
j = len(s)
while i >= 1 and j >= 1:
    if dp[i][j] == dp[i-1][j]:
        i -= 1    
    elif dp[i][j] == dp[i][j-1]:
        j -= 1    
    else:
        ans = s[j-1] + ans
        i -= 1
        j -= 1
print(ans)

### FIXED CODE ###

s = input()
t = input()
dp = [[0 for i in range(len(s)+1)] for j in range(len(t)+1)]
for i in range(len(t)):
    for j in range(len(s)):
        if s[j] == t[i]:
            dp[i+1][j+1] = max(dp[i][j]+1,dp[i+1][j],dp[i][j+1])
        else:
            dp[i+1][j+1] = max(dp[i+1][j],dp[i][j+1])

ans = ''
i = len(t)
j = len(s)
while i >= 1 and j >= 1:
    if dp[i][j] == dp[i-1][j]:
        i -= 1    
    elif dp[i][j] == dp[i][j-1]:
        j -= 1    
    else:
        ans = s[j-1] + ans
        i -= 1
        j -= 1
print(ans)
### BUGGY CODE ###

from collections import defaultdict
n,p = map(int,input().split())
s = list(map(int,list(input())))[::-1]
ans = 0
if p == 2 or p == 5:
    for i in range(n):
        if s[i]%p==0:
            ans += n-i
    print(ans)
else:
    d = defaultdict(int)
    check = 0
    for i in range(n):
        check += s[i]*10**i
        check %= p
        ans += d[check]
        if check == 0:
            ans+=1
        d[check] += 1
    print(ans)

### FIXED CODE ###

from collections import defaultdict
n,p = map(int,input().split())
s = list(map(int,list(input())))[::-1]
ans = 0
if p == 2 or p == 5:
    for i in range(n):
        if s[i]%p==0:
            ans += n-i
    print(ans)
else:
    d = defaultdict(int)
    check = 0
    ten = 1
    for i in range(n):
        check += s[i]*ten
        check %= p
        ans += d[check]
        if check == 0:
            ans+=1
        d[check] += 1
        ten *= 10
        ten %= p
    print(ans)
### BUGGY CODE ###

s = input()
t = input()
# dp[i][j] = LCS(s[:i+1],t[:j+1])
dp = [ [( 0 , -1 )]*(len(t)+1)  for _ in range(len(s)+1) ]
for i in range(1,len(s)+1):
    for j in range(1,len(t)+1):
        comp = [ dp[i][j-1][0],dp[i-1][j-1][0]+int(s[i-1]==t[j-1]),dp[i-1][j][0]]
        argmax = comp.index(max(comp))
        dp[i][j] = ( comp[argmax] , argmax )

ans = ""
i,j = len(s) , len(t)
while True:
    if dp[i][j][1] == 0:
        j -= 1
    elif dp[i][j][1] == 1:
        ans += s[i-1]
        i -= 1
        j -= 1
    elif dp[i][j][1] == 2:
        i -= 1
    else:
        break

print(ans[::-1])

### FIXED CODE ###

import sys

s = sys.stdin.readline()
t = sys.stdin.readline()

# dp[i][j] = LCS(s[:i],t[:j])
sLen, tLen = len(s),len(t),
dp = [ [( 0 , -1 )]*(tLen+1)  for _ in range(sLen+1) ]
for i in range(1,sLen+1):
    for j in range(1,tLen+1):
        comp = [ dp[i][j-1][0],dp[i-1][j-1][0]+int(s[i-1]==t[j-1]),dp[i-1][j][0]]
        argmax = comp.index(max(comp))
        dp[i][j] = ( comp[argmax] , argmax )

ans = ""
i,j = sLen, tLen
for _ in range(sLen+tLen):
    if dp[i][j][1] == 0:
        j -= 1
    elif dp[i][j][1] == 1:
        ans += s[i-1]
        i -= 1
        j -= 1
    elif dp[i][j][1] == 2:
        i -= 1
    else:
        break

print(ans[::-1])
### BUGGY CODE ###

K,S=map(int,input().split())
count=0
for X in range(K+1) :
    for Y in range(K+1) :
        for Z in range(K+1) :
            if X+Y+Z==S :
                count+=1
print(count)

### FIXED CODE ###

K,S=map(int,input().split())
count=0
for X in range(K+1) :
    for Y in range(K+1) :
       Z=S-X-Y
       if 0<=Z<=K :
           count+=1
print(count)
### BUGGY CODE ###

def solve(l, r, A, dp):
    #print(l,r)
    if r - l < 2:
        return max(A[l:r + 1])

    x1 = solve(l + 2, r, A, dp)#dp[l + 2][r] if dp[l + 2][r] != -1 else solve(l + 2, r, A, dp)
    x2 = solve(l + 1, r - 1, A, dp)#dp[l + 1][r - 1] if dp[l + 1][r - 1] != -1 else solve(l + 1, r - 1, A, dp)
    x3 = solve(l, r - 2, A, dp)#dp[l][r - 2] if dp[l][r - 2] != -1 else solve(l, r - 2, A, dp)

    #dp[l][r] = max(min(x1, x2) + A[l], min(x2, x3) + A[r])

    return max(min(x1, x2) + A[l], min(x2, x3) + A[r])#dp[l][r]


N = int(input())
A = [int(i) for i in input().split()]
dp = [[-1] * N for i in range(N)]
print(2*solve(0, N-1, A, dp)-sum(A))


### FIXED CODE ###

def solve(l, r, A, dp):
    if r - l < 2:
        return max(A[l:r + 1])

    x1 = dp[l + 2][r] if dp[l + 2][r] != -1 else solve(l + 2, r, A, dp)
    x2 = dp[l + 1][r - 1] if dp[l + 1][r - 1] != -1 else solve(l + 1, r - 1, A, dp)
    x3 = dp[l][r - 2] if dp[l][r - 2] != -1 else solve(l, r - 2, A, dp)

    dp[l][r] = max(min(x1, x2) + A[l], min(x2, x3) + A[r])

    return dp[l][r]


N = int(input())
A = [int(i) for i in input().split()]
dp = [[-1] * N for i in range(N)]
print(2*solve(0, N-1, A, dp)-sum(A))
### BUGGY CODE ###

from functools import reduce

n = int(input())
a = [int(_) for _ in input().split()]
mul = 0

for i in range(n):
  mul = reduce(lambda x,y: x*y, a)

if mul>10**18:
  mul = -1


print(mul)

### FIXED CODE ###

n = int(input())
a = [int(_) for _ in input().split()]

if 0 in a:
  print(0)
  exit()

mul = 1
for i in a:
  mul *= i
  if mul > 10**18:
    print(-1)
    exit()

print(mul)
### BUGGY CODE ###

X=int(input())
l=[2]
t=3
while 1:
    for i in l:
        if t%i==0:
            break
    else:
        if t>=X:
            break
        l.append(t)
    t+=1
if X==2:
    t=2
print(t)

### FIXED CODE ###

X=int(input())
l=[2]
t=3
while 1:
    for i in l:
        if t%i==0:
            break
    else:
        if t>=X:
            break
        l.append(t)
    t+=1
if X==2:
    t=2
print(t)
### BUGGY CODE ###

line = input()
n, a, b = line.split(" ")
n = int(n)
a = int(a)
b = int(b)

num = 0
i = 0
while num <= n:
    num = num + a + b
    i = i + 1
br_num = a + b
if ((a + b)*i) - n <= b:
    print(a * i)
else:
    num1 = ((a + b)* i) - n
    num2 = a * i
    num3 = num1 - b
    print(num2 - num3)

### FIXED CODE ###

line = input()
n, a, b = line.split(" ")
n = int(n)
a = int(a)
b = int(b)

num = 0
i = 0
i = int(n / (a + b)) + 1
if ((a + b)*i) - n <= b:
    print(a * i)
else:
    num1 = ((a + b)* i) - n
    num2 = a * i
    num3 = num1 - b
    print(num2 - num3)
### BUGGY CODE ###

def binSearch(array, num):
    n = len(array)
    l = -1
    r = n

    while l + 1 < r:
        m = (l + r) // 2
        if num <= array[m]:
            r = m
        else:
            l = m

    return r


n = int(input())

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

a.sort()
b.sort()
c.sort()

ans = 0
for i in range(len(b)):
    a_idx = binSearch(a, b[i])
    k = len(a[0:a_idx])
    c_idx = binSearch(c, b[i] + 1)
    l = len(c[c_idx:])
    ans += k * l
print(ans)


### FIXED CODE ###

import bisect

n = int(input())

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

a.sort()
c.sort()

ans = 0
for i in range(len(b)):
    a_idx = bisect.bisect_left(a, b[i])
    c_idx = bisect.bisect_right(c, b[i])
    ans += a_idx * (n - c_idx)
print(ans)
### BUGGY CODE ###

from math import factorial
def pow_with_mod(a, b, p):
    if b==0: return 1
    if b%2==0:
        d=pow_with_mod(a,b//2,p)
        return d*d %p
    if b%2==1:
        return (a*pow_with_mod(a,b-1,p ))%p

def comb_with_mod(n, k, p):

    if n<0 or k<0 or n<k: 
        return 0
    if n==0 or k==0:
        return 1
    a=factorial(n) %p
    b=factorial(k) %p
    c=factorial(n-k) %p
    return (a*pow_with_mod(b,p-2,p)*pow_with_mod(c,p-2,p))%p

div = 10 ** 9 + 7
X, Y = map(int, input().split())

if((X+Y) % 3 != 0):
    print(0)
    exit()

n = (X+Y) // 3
X -= n
Y -= n
if(X < 0 or Y < 0):
    print(0)
    exit()

ans = comb_with_mod(X+Y, X, div)
print(ans)


### FIXED CODE ###

def inv(x, mod=1):
    return pow(x, mod-2, mod)

def fact(x, mod=1):
    res = 1 
    for i in range(1, x + 1): 
        res *= i
        res %= mod    
    return res

def comb(n, k, mod=1):
    return (fact(n, mod) * inv(fact(n-k, mod), mod) * inv(fact(k, mod), mod)) % mod

div = 10 ** 9 + 7
X, Y = map(int, input().split())

if (X+Y) % 3 != 0:
    print(0)
    exit()

n = (X+Y) // 3
X -= n
Y -= n
if X < 0 or Y < 0:
    print(0)
    exit()

ans = comb(X+Y, X, div)
print(ans)
### BUGGY CODE ###

import numpy as np
N,C=map(int,input().split())

def get_unique_list(seq):
  seen = []
  return [x for x in seq if x not in seen and not seen.append(x)]
  


Record=[]

for i in range(N):
  Record.append(list(map(int,input().split())))

newRecord=[]
for c in range(C):
  Recordi=[]
  for i in range(N):
    if Record[i][2]==c+1:
      Recordi.append(Record[i])
  sort_Recordi=sorted(Recordi,key = lambda x:x[0])
  for j in range(len(sort_Recordi)-1):
    if sort_Recordi[j][1]==sort_Recordi[j+1][0]:
      sort_Recordi[j][1]=sort_Recordi[j+1][1]
      sort_Recordi[j+1][0]=sort_Recordi[j][0]
  sort_Recordi_u=get_unique_list(sort_Recordi)
  #print(sort_Recordi_u)
  for k in range(len(sort_Recordi_u)):
    newRecord.append(sort_Recordi_u[k])
    
      
#print(newRecord)
nofc=np.zeros(10**5+1)

for a in newRecord:
  vec=np.ones(a[1]-a[0]+1)
  nofc[a[0]:a[1]+1]+=vec
#print(vec)
#print(nofc[:13])
print(int(max(nofc)))

### FIXED CODE ###

import numpy as np
N,C=map(int,input().split())

nofc=np.zeros((C,10**5),dtype=int)

for i in range(N):
  s,t,c=map(int,input().split())
  vec=np.ones(t-s+1,dtype=int)
  nofc[c-1][s-1:t]=vec
print(int(max(np.sum(nofc,axis=0))))