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

H, W=map(int, input().split())
A=[list(map(int, input().split())) for i in range(H)]
B=[list(map(int, input().split())) for i in range(H)]
AB=[[abs(A[i][j]-B[i][j]) for j in range(W)] for i in range(H)]

G=[[set() for j in range(W)] for i in range(H)]
G[0][0].add(AB[0][0])

for i in range(1, W):
  ks=G[0][i-1]
  for k in ks:
    G[0][i].add(abs(k+AB[0][i]))
    G[0][i].add(abs(k-AB[0][i]))

for i in range(1, H):
  ks=G[i-1][0]
  for k in ks:
    G[i][0].add(abs(k+AB[i][0]))
    G[i][0].add(abs(k-AB[i][0]))

from collections import deque

def f(data):
  i=data[0]
  j=data[1]
  tmp=AB[i][j]
  
  ks=G[i-1][j]
  for k in ks:
    G[i][j].add(abs(k+tmp))
    G[i][j].add(abs(k-tmp))
    
  ks=G[i][j-1]
  for k in ks:
    G[i][j].add(abs(k+tmp))
    G[i][j].add(abs(k-tmp))
    
  if i<H-1:
    q.append([i+1, j])
  if j<W-1:
    q.append([i, j+1])
    
q=deque()
q.append([1, 1])
while len(q)>0:
  data=q.popleft()
  f(data)
  
print(min(G[-1][-1]))

### FIXED CODE ###

H, W=map(int, input().split())
A=[list(map(int, input().split())) for _ in range(H)]
B=[list(map(int, input().split())) for _ in range(H)]
AB=[[abs(A[i][j]-B[i][j]) for j in range(W)] for i in range(H)]

G=[[[0]*(80*162) for j in range(W)] for i in range(H)]
G[0][0][AB[0][0]]=1
sumi=[[0]*W for i in range(H)]
  
from collections import deque

def f(data):
  i=data[0]
  j=data[1]
  owari=(i+j+1)*80+1
  if i<H-1 and j<W-1:
    for k in range(owari):
      if G[i][j][k]>0:
        G[i+1][j][k+AB[i+1][j]]=1
        G[i+1][j][abs(k-AB[i+1][j])]=1
        G[i][j+1][k+AB[i][j+1]]=1
        G[i][j+1][abs(k-AB[i][j+1])]=1
    if sumi[i+1][j]==0:
      q.append([i+1, j])
      sumi[i+1][j]=1
    if sumi[i][j+1]==0:
      q.append([i, j+1])
      sumi[i][j+1]=1
  elif i>=H-1 and j<W-1:
    for k in range(owari):
      if G[i][j][k]>0:
        G[i][j+1][k+AB[i][j+1]]=1
        G[i][j+1][abs(k-AB[i][j+1])]=1
    if sumi[i][j+1]==0:
      q.append([i, j+1])
      sumi[i][j+1]=1
  elif i<H-1 and j>=W-1:
    for k in range(owari):
      if G[i][j][k]>0:
        G[i+1][j][k+AB[i+1][j]]=1
        G[i+1][j][abs(k-AB[i+1][j])]=1
    if sumi[i+1][j]==0:
      q.append([i+1, j])
      sumi[i+1][j]=1
    
q=deque()
q.append([0, 0])
while len(q)>0:
  data=q.popleft()
  f(data)
  
out=0
while G[-1][-1][out]==0:
  out+=1
print(out)
### BUGGY CODE ###

h, n = map(int, input().split())
a = [0] * n
b = [0] * n
for i in range(n):
    a[i], b[i] = map(int, input().split())

dp = [0] + [-1] * h
INF = 10**18
for hp in range(1, h+1):
    ret = INF
    for i in range(n):
        if hp - a[i] >= 0:
            ret = min(ret, dp[hp-a[i]] + b[i])
        else:
            ret = min(ret, b[i])
    dp[hp] = ret
print(dp[h])


### FIXED CODE ###

h, n = map(int, input().split())
a = [0] * n
b = [0] * n
for i in range(n):
    a[i], b[i] = map(int, input().split())

dp = [0] + [-1] * h
INF = 10**18
for hp in range(1, h+1):
    ret = INF
    for i in range(n):
        if hp - a[i] >= 0:
            ret = min(ret, dp[hp-a[i]] + b[i])
        else:
            ret = min(ret, b[i])
    dp[hp] = ret
print(dp[h])
### BUGGY CODE ###

from sys import stdin
import fractions
from collections import deque
 
 
N = int(stdin.readline().rstrip())
A = [int(x) for x in stdin.readline().rstrip().split()]
A = deque(A)
 
res = []
tmp = 0 
 
for i in range(N):
    tmp = A.popleft()
    gcd_num = A[0]
    for j in range(1, N-1):
        gcd_num = fractions.gcd(gcd_num, A[j])
    res.append(gcd_num)
    A.append(tmp)

 
print(max(res))

### FIXED CODE ###

from sys import stdin
import fractions

N = int(stdin.readline().rstrip())
A = [int(x) for x in stdin.readline().rstrip().split()]
# インデックスを直感で使えるように先頭にダミーを入れる
A = [0] + A

"""
L(i) := A_1, A_2, ..., A_i-1 の最大公約数
R(i) := A_i, A_i+1, ..., A_N の最大公約数
Aiを書き換えることにした場合の最大公約数をM_iとすると
M_i = gcd(L(i), R(i+1))

ただし L(0)=0, R(N+1)=0
"""

L = [0 for _ in range(N+1)]
R = [0 for _ in range(N+2)]

for i in range(N):
    L[i+1] = fractions.gcd(L[i], A[i])


for i in range(N, 0, -1):
    R[i] = fractions.gcd(R[i+1], A[i])

M = []

for i in range(1, N+1):
    M_i = fractions.gcd(L[i], R[i+1])
    M.append(M_i) 

print(max(M))
### BUGGY CODE ###

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

#k,n = 20,3
#a = [0,5 ,15]
a = list(map(lambda x : x - min(a) , a))

s = [k - a[n-1]]
for i in range(1,n):
  s.append(a[i]-a[i-1])

print(k - max(s))

### FIXED CODE ###

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

#k,n = 20,5
#a = [1,2,3,4,19]

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

s.append(k - a[n-1] + a[0])

print(k - max(s))
### BUGGY CODE ###

import math
from functools import reduce
def gcd(*numbers):
    return reduce(math.gcd, numbers)
N = int(input())
result = 0
for i in range(1,N+1):
    for j in range(1,N+1):
        for k in range(1,N+1):
            result+=gcd(i,j,k)
print(result)

### FIXED CODE ###

import itertools
import math
from functools import reduce
def gcd(numbers):
    return reduce(math.gcd, numbers)
N = int(input())
l = [i for i in range(1,N+1)]
h = itertools.combinations_with_replacement(l, 3)

result=0
for v in h:
    ans=gcd(v)
    i,j,k=zip(v)
    if (i==j)&(i==k):
        result += ans
    elif ((i==j)&(i!=k))|((i==k)&(i!=j))|((j==k)&(j!=i)):
        result += (ans*3)
    else:
        result += (ans*6)
    
print(result)
### BUGGY CODE ###

import numpy as np
N, K = map(int, input().split())
P = list(map(int, input().split()))

kitai = [None]*(1001)
for i in range(1, 1001):
    kitai[i] = (0.5*i*(i+1))/i

ruiseki = [None]*(N-K+1)
for i in range(0, N-K+1):
    ruiseki[i] = sum(P[i:i+K])

ind = np.array(ruiseki).argmax()
temp = P[ind:ind+K]
ans = 0
for t in temp:
    ans+=kitai[t]
print(ans)


### FIXED CODE ###

import numpy as np
N, K = map(int, input().split())
P = list(map(int, input().split()))

kitai = [None]*(1001)
for i in range(1, 1001):
    kitai[i] = (0.5*i*(i+1))/i

ruiseki = P.copy()
ruiseki[K-1] = sum(ruiseki[0:K])
for i in range(K, N):
    ruiseki[i] = ruiseki[i-1]+P[i]-P[i-K]

ind = np.array(ruiseki).argmax()
temp = P[ind-K+1:ind+1]
ans = 0
for t in temp:
    ans+=kitai[t]
print(ans)
### BUGGY CODE ###

N = int(input())
li = [ int(it) for it in input().split() ] 

keta = 0
p = max(li)
for i in range(100000):
  if (p>0):
    keta+=1
    p//=2
  else:
    break

bli = [ [0]*keta for i in range(N) ]

for i in range(len(li)):
  p = li[i]
  for j in range(100000):
    if (p>0):
      bli[i][j]=p%2
      p//=2
    else:
      break
      
sli = [ [0]*(N+1) for i in range(keta) ]
for k in range(keta):
  for i in range(N):
    sli[k][i+1] = sli[k][i] + bli[i][k] 


s = 0
for i in range(N):
  for j in range(i+1,N+1):
    flag = True
    for k in range(keta):
      if (sli[k][j] - sli[k][i] < 2):
        pass
      else:
        flag=False
        break
    if (flag):
      s += 1
    else:
      break
print (s)

### FIXED CODE ###

N = int(input())
li = [ int(it) for it in input().split() ] 

keta = 0
p = max(li)
for i in range(100000):
  if (p>0):
    keta+=1
    p//=2
  else:
    break

bli = [ [0]*keta for i in range(N) ]

for i in range(len(li)):
  p = li[i]
  for j in range(100000):
    if (p>0):
      bli[i][j]=p%2
      p//=2
    else:
      break
      
sli = [ [0]*(N+1) for i in range(keta) ]
for k in range(keta):
  for i in range(N):
    sli[k][i+1] = sli[k][i] + bli[i][k] 


s = 0
x = 0
y = 1
gli=[]
for i in range(N*N):
    
    flag = True
    for k in range(keta):
      if (sli[k][y] - sli[k][x] < 2):
        pass
      else:
        flag=False


    if flag:
      if ( len(gli) > 0 ):
        if (gli[-1][0]==x):
          gli.pop()
      gli.append([x,y])    

    if (x==N-1 and y==N):
      break
     
    
    if (flag):
      y+=1
      if(y>N):
        x+=1
      y=min(y,N)
    else:
      x+=1
      y-=1
      x = min(N,x)

s=0
for a,b in gli:
  s+=b-a
print(s)
### BUGGY CODE ###

n,m=map(int,input().split())
abc=[list(map(int,input().split())) for _ in [0]*m]
g=[[] for _ in [0]*n]
[g[a-1].append([b-1,c]) for a,b,c in abc]

loop=set()
d=[-10**15 for _ in [0]*n]
d[0]=0
q=[[0,1]]
s=set()
l=[]
while q:
    item,depth=q.pop()
    if depth<=len(s):
        for _ in range(len(s)-depth+1):
            rmv=l.pop()
            s.remove(rmv)
    l.append(item)
    s.add(item)
    for i,dist in g[item]:
        if d[i]<d[item]+dist:
            if i in s:
                loop.add(i)
                continue
            d[i]=d[item]+dist
            q.append([i,depth+1])
    
def check(x):
    q=[x]
    c=[False for _ in [0]*n]
    c[x]=True
    while q:
        item=q.pop()
        for i,j in g[item]:
            if c[i]==False:
                c[i]=True
                q.append(i)
    return c[n-1]
  
for i in loop:
    if check(i)==True:
        print("inf")
        break
else:
    print(d[n-1])

### FIXED CODE ###

n,m=map(int,input().split())
abc=[list(map(int,input().split())) for _ in [0]*m]
g=[[] for _ in [0]*n]
[g[a-1].append([b-1,c]) for a,b,c in abc]

dist=[-10**15 for _ in [0]*n]
dist[0]=0
a,b=-10**15,-10**15

for _ in range(n):
    for p in range(n):
        for i,j in g[p]:
            dist[i]=max(dist[i],dist[p]+j)
    a,b=b,dist[n-1]

if a==b:
    print(a)
else:
    print("inf")
### BUGGY CODE ###

s = list(input())
q = int(input())
rev = False
for i in range(q):
    inp = input().split()
    if len(inp) == 1:
        if rev:
            rev = False
        else:
            rev = True
    elif inp[1] == "1":
        a = inp[2]
        if rev:
            s.append(a)
        else:
                s.insert(0, a)
    else:
        a = inp[2]
        if rev:
            s.insert(0, a)
        else:
            s.append(a)
if rev:
    s.reverse()
print("".join(s))

### FIXED CODE ###

s = list(input())
q = int(input())
l1 = []
l2 = []
rev = False
for i in range(q):
    inp = input()
    if inp[0] == "1":
        if rev:
            rev = False
        else:
            rev = True
    elif inp[2] == "1":
        a = inp[4]
        if rev:
            l2.append(a)
        else:
            l1.append(a)
    else:
        a = inp[4]
        if rev:
            l1.append(a)
        else:
            l2.append(a)
l1.reverse()
ans = l1 + s + l2
if rev:
    ans.reverse()
print("".join(ans))
### BUGGY CODE ###

import sys
import math
import heapq
input = sys.stdin.readline

MOD = 10 ** 9 + 7


def main():
    N, M = map(int, input().split())
    A = []

    for i in map(int, input().split()):
        heapq.heappush(A, i)
    # B = [0] * N
    # C = [0] * N

    for i in range(M):
        B, C = map(int, input().split())

        for i in range(B):
            heapq.heappush(A, max(C, heapq.heappop(A)))

    print(sum(A))


if __name__ == '__main__':
    main()


### FIXED CODE ###

import sys
import math
import heapq
import bisect
input = sys.stdin.readline

MOD = 10 ** 9 + 7


def main():
    N, M = map(int, input().split())
    # A = []

    # for i in map(int, input().split()):
    #     bisect.insort(A, i)

    # for i in range(M):
    #     B, C = map(int, input().split())
    _A = {}
    A = []

    for i in map(int, input().split()):
        if i in _A:
            _A[i] += 1
        else:
            _A[i] = 1

    for (num, c) in _A.items():
        heapq.heappush(A, (num, c))
    # B = [0] * N
    # C = [0] * N
    # print(A)

    B = [0] * M
    C = [0] * M
    T = [None] * M
    for i in range(M):
        b, c = map(int, input().split())
        T[i] = (c, b)

    T = sorted(T, reverse=True)

    finish = False
    for i in range(M):
        C, B = T[i]

        while B > 0:
            item = heapq.heappop(A)

            if item[0] < C:
                replace = min(item[1], B)
                B -= replace
                remain = item[1] - replace

                heapq.heappush(A, (C, replace))

                if remain > 0:
                    heapq.heappush(A, (item[0], remain))

                # print("")
                # print(A, B, replace)
            else:
                heapq.heappush(A, item)
                finish = True
                break

        if finish is True:
            break

    ans = 0
    for a in A:
        ans += a[0] * a[1]
    print(ans)


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

import sys
def input():
    return sys.stdin.readline()[:-1]
inf=float("inf")
a,b=map(int,input().split())
ans=a
for i in range(a+1,b+1):
    ans ^= i

print(ans)

### FIXED CODE ###

import sys
def input():
    return sys.stdin.readline()[:-1]
inf=float("inf")
a,b=map(int,input().split())
if a%2==0:
    if b%2!=0:
        if (b+1-a)//2%2==0:
            print(0)
        else:
            print(1)
    else:
        if (b-a)//2%2==0:
            print(b)
        else:
            print(b^1)
else:
    if b%2!=0:
        if (b-a)//2%2==0:
            print(a)
        else:
            print(a^1)
    else:
        if (b+1-a)//2%2==0:
            print(1^a^b)
        else:
            print(a^b)
### BUGGY CODE ###

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

ans = 0
for i in range(len(A_list)):
    if i <= N-1:
        for j in range(i + 1, N):
            ans += A_list[i]*A_list[j]
            ans = ans%(10**9+7)
print(ans)

### FIXED CODE ###

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

c = 10**9+7


def egcd(a, b):
    if a == 0:
        return b, 0, 1
    else:
        g, y, x = egcd(b % a, a)
        return g, x - (b // a) * y, y


def modinv(a, m):
    g, x, y = egcd(a, m)
    if g != 1:
        raise Exception('modular inverse does not exist')
    else:
        return x % m


inv = modinv(2, c)

sum_of_a = sum(A_list) % c
sum_of_sq_a = sum([i**2 for i in A_list]) % c

ans = (sum_of_a**2 % c - sum_of_sq_a)*inv %c

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

def fun(a,k):
    if len(a)==1:
        return 0
    dp = [float('inf')]*len(a)
    dp[0]=0
    dp[1]=dp[0]+abs(a[0]-a[1])
    for i in range(2,len(a)):
        for j in range(k,0,-1):
            dp[i]=min(dp[i] , dp[i-j]+abs(a[i]-a[i-j]))
    return dp[-1]
  
from sys import stdin , stdout
n,k = map(int , stdin.readline().split())
a = list(map(int , stdin.readline().split()))
print(fun(a,k))

### FIXED CODE ###

def fun(a,k,n): ## k different steps can be taken
    if n==1:
        return 0
    dp = [0]*n
    dp[1]=dp[0]+abs(a[0]-a[1])
    for i in range(2,len(a)):
        t = 0
        min_ = float('inf')
        for j in range(i-1,-1,-1):
            if t==k:
                break
            else:
                t+=1
            if dp[j]+abs(a[i]-a[j]) < min_ :
                   min_ = dp[j]+abs(a[i]-a[j])
        dp[i]=min_
    return dp[-1]
from sys import stdin , stdout
n,k = map(int , stdin.readline().split())
a = list(map(int , stdin.readline().split()))
print(fun(a,k,n))
### BUGGY CODE ###

S = list(map(int, list(input())))
N = len(S)

dp = [[0]*N for i in range(N)]
if N < 4:
    print(0)
    exit(0)

D = [[0]*N for i in range(9)]
for i in range(9):
    D[i][0] = (i+1)
    for j in range(1, N):
        D[i][j] = D[i][j-1]*10 % 2019
ans = 0

dp[0] = S[0]
for i in range(1, N):
    dp[i] = (dp[i-1]*10 + S[i]) % 2019
    if dp[i] == 0:
        ans += 1

for i in range(1, N):
    for j in range(i, N):
        dp[j] -= D[S[i-1]-1][j - i + 1]
        dp[j] %= 2019
        if dp[j] == 0:
            ans += 1


# print(N)
# print(*dp, sep='\n')
print(ans)


### FIXED CODE ###

import collections
S = list(map(int, list(input())))
N = len(S)

dp = [0]*N
if N < 4:
    print(0)
    exit(0)

ans = 0

D = [0]*N
D[0] = 1
for i in range(1, N):
    D[i] = D[i-1]*10 % 2019
t = collections.defaultdict(int)
tmp = 0

t[0] += 1
for i in range(N):
    tmp += S[N-1-i]*D[i]
    tmp %= 2019
    t[tmp] += 1

for x in t:
    ans += t[x]*(t[x]-1) // 2

# print(N)
# print(*dp, sep='\n')

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

N = int(input())
S = [int(s) for s in input().split()]
l = 1
for s in S:
  l = l * s
if l > 10**18:
  l = -1
print(l)

### FIXED CODE ###

N = int(input())
S = [int(s) for s in input().split()]
if 0 in S:
  l = 0
else:
  l = 1
  for s in S:
    l = l * s
    if l > 10**18:
      l = -1
      break
print(l)
### BUGGY CODE ###

n = int(input())
a = [int(input()) for i in range(n)]
cnt=0
while len(a)>0:
  cnt+=1
  nokori=[]
  tmp = a[0]
  for i in range(1,len(a)):
    if tmp<a[i]:
      tmp=a[i]
    else:
      nokori.append(a[i])
  a = nokori
print(cnt)


### FIXED CODE ###

import bisect
n = int(input())
a = [- int(input()) for i in range(n)]
tmp = [a[0]]
for i in range(1,n):
  idx=bisect.bisect_right(tmp,a[i])
  if idx==len(tmp):
    tmp.append(a[i])
  else:
    tmp[idx] =a[i]
print(len(tmp))
### BUGGY CODE ###

def is_anagram(string1, string2):
  string1 = list(string1)
  string2 = list(string2)
  string1.sort()
  string2.sort()
  for i in range(len(string1)):
    if not string1[i] == string2[i]:
      return False
  return True

count = 0
N = int(input())
strings = [input() for _ in range(N)]

for string1_index in range(N):
  string1 = strings[string1_index]
  for delta_index in range(N - string1_index - 1):
    delta_index = delta_index + 1
    string2 = strings[string1_index + delta_index]
    if is_anagram(string1, string2):
      count = count + 1
print(count)



### FIXED CODE ###

from collections import defaultdict
N = int(input())
sorted_s_list = defaultdict(int)
count = 0
s_list = []
for _ in range(N):
    s = str(sorted(list(input())))
    if sorted_s_list[s] > 0:
        count += sorted_s_list[s]
        sorted_s_list[s] += 1
    else:
        sorted_s_list[s] = 1
print(count)
### BUGGY CODE ###

import sys
n, k = map(int, input().split())
a = list(map(int, input().split()))
b = [1]
cnt = 0
next_town = 0

l = len(a)
for j in range(l):
    cnt += 1
    if j==0:
        b.append(a[0])
        next_town = a[0]
        continue
    
    b.append(a[next_town - 1])
    next_town = a[next_town -1]
    for i in range(l):
        if b.count(i+1)==2:
            k -= cnt
            idx_f = b.index(i+1)
            roop_list = b[idx_f:-1]
            roop_num = len(b[idx_f:-1])
            last = k %roop_num

            print(roop_list[last])
            sys.exit()



### FIXED CODE ###

N, K = map(int, input().split())
A = [int(a) - 1 for a in input().split()]

if K <= N:
    p = 0
    for i in range(K):
        p = A[p]
    print(p + 1)
    exit()

p = 0
t = [-1] * N
t[0] = 0
for i in range(1, N):
    p = A[p]
    if t[p] != -1:
        break
    t[p] = i

d = i - t[p]
K -= i
K %= d

for i in range(K):
    p = A[p]
print(p + 1)
### BUGGY CODE ###

from collections import defaultdict

n,m = map(int,input().split())
uf = [-1]*n
def root(x):
    if uf[x] < 0:
        return x
    uf[x] = root(uf[x])
    return uf[x]
def unite(x,y):
    rx, ry = root(x), root(y)
    if rx==ry: return False
    if rx > ry: rx, ry = ry, rx
    uf[rx] += uf[ry]
    uf[ry] = rx
    return True

edge = [[-1]*n for i in range(n)]
for i in range(m):
    l,r,d = map(int, input().split())
    edge[l-1][r-1] = d
    edge[r-1][l-1] = -d
    unite(l-1, r-1)

dist = [0]*n
visited = [False]*n
ans = True

def bfs(p, d=0):
    global ans
    if not visited[p]:
        visited[p] = True
        dist[p] = d
        for ind, j in enumerate(edge[p]):
            if j>= 0:
                bfs(ind, d+j)
    else:
        if dist[p] != d:
            ans = False

for i in range(n):
    if uf[i] >= 0:
        continue
    bfs(i, 0)
    if not ans:
        break

if ans:
    print("Yes")
else:
    print("No")

### FIXED CODE ###

from collections import defaultdict, deque

n,m = map(int,input().split())
edge = [[] for i in range(n)]
for i in range(m):
    l,r,d = map(int, input().split())
    edge[l-1].append((r-1,d))
    edge[r-1].append((l-1,-d))

dist = [0]*n
visited = [False]*n

for i in range(n):
    if visited[i]:
        continue
    q = deque()
    q.append((i,0))
    while q:
        to, d = q.popleft()
        if visited[to]:
            if dist[to] != d:
                print("No")
                exit()
        else:
            visited[to] = True
            dist[to] = d
            for ind, j in edge[to]:
                q.append((ind,d+j))

print("Yes")
### BUGGY CODE ###

S = input()
g = 10 ** 9 + 7
x = 1
DP = [None for _ in range(2)]
DP[0] = [0] * 13
DP[0][0] = 1
for i in range(len(S)):
    DP[1] = DP[0].copy()
    DP[0] = [0] * 13
    for j in range(13):
        if S[i] == "?":
                for k in range(10):
                    DP[0][(j*10+k)%13] += DP[1][j]
        else:
            DP[0][(j*10+int(S[i]))%13] += DP[1][j]

print(DP[0][5] % g)


### FIXED CODE ###

S = input()
g = 10 ** 9 + 7
x = 1
DP = [[0] * 13 for _ in range(2)]
DP[0][0] = 1
for i in range(len(S)):
    for j in range(13):
        DP[1][j] = DP[0][j] % g
        DP[0][j] = 0
    for j in range(13):
        if S[i] == "?":
            for k in range(10):
               DP[0][(j*10+k)%13] += DP[1][j]
        else:
            DP[0][(j*10+int(S[i]))%13] += DP[1][j]

print(DP[0][5] % g)
### BUGGY CODE ###

n,m,s,t=map(int,input().split())
import numpy as np
import sys
def input(): return sys.stdin.readline().strip()
u,v,a,b=map(np.array,zip(*[map(int,input().split()) for i in range(m)]))
from scipy.sparse import csr_matrix
g1=csr_matrix((a,(u-1,v-1)),shape=(n,n))
g2=csr_matrix((b,(u-1,v-1)),shape=(n,n))
from scipy.sparse.csgraph import dijkstra
d1=dijkstra(g1,directed=False,indices=s-1)
d2=dijkstra(g2,directed=False,indices=t-1)
D=10**15-d1-d2
r=np.maximum.accumulate(D[::-1])[::-1].astype(np.int64)
print(*r,sep='\n')

### FIXED CODE ###

n,m,s,t=map(int,input().split())
uvab=[map(int,input().split()) for i in range(m)]
inf=10**20
c1=[[] for i in range(n)]
c2=[[] for i in range(n)]
for u,v,a,b in uvab:
    c1[u-1].append((v-1,a))
    c1[v-1].append((u-1,a))
    c2[u-1].append((v-1,b))
    c2[v-1].append((u-1,b))
from heapq import heappop,heappush
def dij(c,N,start):
    d=[inf]*N
    d[start]=0
    prev=[-1]*N
    q=[]
    heappush(q,(0,start))
    while len(q)>0:
        u=heappop(q)[1]
        for v,w in c[u]:
            if w<inf:
                temp=d[u]+w
                if d[v]>temp:
                    d[v]=temp
                    prev[v]=u
                    heappush(q,(d[v],v))
    return d
d1=dij(c1,n,s-1)
d2=dij(c2,n,t-1)
r=[0]*n
for i in range(n):
    r[-i-1]=max(r[-i],10**15-int(d1[-i-1])-int(d2[-i-1]))
print(*r,sep='\n')
### BUGGY CODE ###

n=int(input())
a=list(map(str,input().split()))
b=[]
for i in range(n):
    b.append(a[i])
    b.reverse()
print(" ".join(b))


### FIXED CODE ###

n=int(input())
a=list(map(str,input().split()))
b,c=[],[]
if n%2==0:
    for i in range(n):
        if i%2==0:
            b.append(a[i])
        else:
            c.append(a[i])
    c.reverse()
else:
    for i in range(n):
        if i%2==1:
            b.append(a[i])
        else:
            c.append(a[i])
    c.reverse()
print(" ".join(c+b))
### BUGGY CODE ###

N, M, Q = [int(_) for _ in input().split()]
LR = [[int(_) for _ in input().split()] for _ in range(M)]
pq = [[int(_) for _ in input().split()] for _ in range(Q)]

memo = [[0 for _ in range(N)] for _ in range(N)]
for l, r in LR:
    memo[l - 1][r - 1] += 1
for p, q in pq:
    print(sum([sum(memo[_][p - 1:q]) for _ in range(p - 1, q)]))

### FIXED CODE ###

N, M, Q = [int(_) for _ in input().split()]
LR = [[int(_) for _ in input().split()] for _ in range(M)]
PQ = [[int(_) for _ in input().split()] for _ in range(Q)]

cumsum = [[0] * (N+2) for _ in range(N+1)]
for lr in LR:
    cumsum[lr[0]][lr[0]] += 1
    if lr[1] < N:
        cumsum[lr[0]][lr[1]+1] -= 1
for i in range(N+1):
    for j in range(i, N):
        cumsum[i][j+1] += cumsum[i][j]
for pq in PQ:
    print(sum([cumsum[i][i]-cumsum[i][pq[1]+1]
               for i in range(pq[0], pq[1]+1)]))