Harryxun/stf_run huggingface dataset:
import itertools
import sys
import numpy as np
INF = float("inf")
N, M, x= map(int, input().split())
nap = []

for _ in range(N):
    nap.append(list(map(int, input().split()))) 
mon=[]
value=[]
for x in nap:
    mon.append(x[0])
for y in nap:
    value.append(y[1:])
mon=np.array(mon)
value=np.array(value)
for i in itertools.product((0,1),repeat=N):
    choice = np.array(list(i), dtype=bool)
    if all(value[choice,:].sum(axis=0) >=x):
        ans = min(ans,mon[choice].sum())
if ans == INF:
    print(-1)
else:
    print(ans)

    


### FIXED CODE ###


import itertools
import sys
import numpy as np
INF = float("inf")
N, M, X = list(map(int, sys.stdin.buffer.readline().split()))
A = [list(map(int, sys.stdin.buffer.readline().split())) for _ in range(N)]
 
A = np.array(A, dtype=int)
mat = A[:, 1:]
C = A[:, 0]
 
ans = INF
for choices in itertools.product((True, False), repeat=N):
    choices = np.array(list(choices), dtype=bool)
    if np.all(mat[choices, :].sum(axis=0) >= X):
        ans = min(ans, C[choices].sum())
if ans == INF:
    print(-1)
else:
    print(ans)
import sys
row = sys.stdin.readline
 
 
def read_int(row):
    return int(row().rstrip())
 
def read_string(row):
    return row().rstrip()
  
N = read_int(row)
S = read_string(row)
 
cnt = 0
for i in range(0, len(S) -3):
    if S[i] == "A" and S[i+1] == "B" and S[i+2] == "C":
        cnt +=1
print(cnt)
import sys
row = sys.stdin.readline


def read_int(row):
    return int(row().rstrip())

def read_string(row):
    return row().rstrip()
  
N = read_int(row)
S = read_string(row)

cnt = 0
for i in range(0, len(S) -2):
    if S[i] == "A" and S[i+1] == "B" and S[i+2] == "C":
        cnt +=1
print(cnt)
提出情報
提出日時

### FIXED CODE ###

import sys
row = sys.stdin.readline
def read_int(row):
    return int(row().rstrip())

def read_string(row):
    return row().rstrip()
  
N = read_int(row)
S = read_string(row)

cnt = 0
for i in range(0, len(S) -2):
    if S[i] == "A" and S[i+1] == "B" and S[i+2] == "C":
        cnt +=1
print(cnt)
S,T = input().split()

count=0

for i in range(3):
    if S[i]==T[i]:
      count=count+1
print(count)

### FIXED CODE ###

S= input()
T= input()
count=0

for i in range(3):
    if S[i]==T[i]:
      count=count+1
print(count)
N, M = map(int, input().split())
A = [0]*N
B = [0]*N
for i in range(N):
  A[i], B[i] = map(int, input().split())
  
for i in range(N):
  A.insert(2*i+1, B[i])

C = [A[i:i + 2] for i in range(0, len(A), 2)]
C = sorted(C, key=lambda x:(x[0],-x[1]))

hon = 0
kane = 0
for i in range(N):
  if C[i][1] + hon <= M:
    hon += C[i][1]
    kane += C[i][0] * C[i][1]
  else:
    kane += (M - hon) * C[i][0]
    break

print(kane)

### FIXED CODE ###

A = list(map(int, input().split()))
B = list(map(int, input().split()))
print((A[0]-B[0])*(A[1]-B[1]))
N, Q = map(int,input().split())
S = input()
count = 0

for i in range(Q):
  l, r = map(int,input().split())
  Si = S[l-1:r]
  
  len_Si = len(Si)
  for i in range(len_Si-1):
    if Si[i:i+2] == 'AC'
      count += 1
  print(count)
  count = 0


### FIXED CODE ###

N, Q = map(int,input().split())
S = input()
t=[0]*(N+1)
for i in range(N):
  t[i + 1] = t[i] + (1 if S[i : i + 2] == 'AC' else 0)
for i in range(Q):
  l, r = map(int, input().split())
  print(t[r-1] - t[l-1])
c = input().split()
c = list(map(int, a))
b = input().split()
b = list(map(int, a))
ans = 0
for n in range(c[0]):
	a[n] = input().split()
	a[n] = list(map(int, a[n]))
	tmp = 0
	for m in range(c[1]):
		tmp += b[m] * a[n][m]
	if tmp > -c[2]:
		ans += 1
print(ans)

### FIXED CODE ###

c = input().split()
c = list(map(int, c))
b = input().split()
b = list(map(int, b))
ans = 0
a = [0] * (c[0])
for n in range(c[0]):
	a[n] = input().split()
	a[n] = list(map(int, a[n]))
	tmp = 0
	for m in range(c[1]):
		tmp += b[m] * a[n][m]
	if tmp > -c[2]:
		ans += 1
print(ans)
import sys
from collections import Counter
n = int(input())
a = list(map(int, input().split()))

# 排他的論理和は3つずつ循環するため、満たすべき条件は以下
# nが3の倍数である, 数字が3種類で同数, 3種類が排他的論理和の関係になっている

if n % 3 != 0:
    print("No")
    sys.exit()

c = Counter(a)

if len(c.keys()) != 3:
    print("No")
    sys.exit()

if not all([x == cli[0] for x in cli]):
    print("No")
    sys.exit()

a = list(c.keys())
    
ans_0 = a[1] ^ a[2] == a[0]
ans_1 = a[2] ^ a[0] == a[1]
ans_2 = a[0] ^ a[1] == a[2]

print("Yes" if all([ans_0, ans_1, ans_2]) else "No")

### FIXED CODE ###

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


# 全て0ならYes
if all([x == 0 for x in a]):
    print("Yes")
    sys.exit()

    
# 全て0でない場合、nは必ず3の倍数になる
if n % 3 != 0:
    print("No")
    sys.exit()

c = Counter(a)

cli = list(c.keys())
cval = list(c.values())


# 排他的論理和は3つずつ循環するため、keyは3種類、または0を含む場合2種類になる
if len(cli) > 3 or len(cli) <2:
    print("No")
    sys.exit()

# keyが2種類の場合、0が全体の1/3ならOK
if len(cli) == 2 and 0 in cli:
    if c[0] == n // 3:
        print("Yes")
        sys.exit()
    else:
        print("No")
        sys.exit()

# keyが3種類の場合、全ての値が同数、かつ排他的論理和の関係であればOK
if not all([x == cval[0] for x in cval]):
    print("No")
    sys.exit()

ans_0 = cli[1] ^ cli[2] == cli[0]
ans_1 = cli[2] ^ cli[0] == cli[1]
ans_2 = cli[0] ^ cli[1] == cli[2]

print("Yes" if all([ans_0, ans_1, ans_2]) else "No")
N = int(input())

print(round((N/3)**3, '.15f'))

### FIXED CODE ###

N = int(input())

print((N/3)**3)
M,D = input().strip().split()
count = 0
for m in range(2,M+1):
    for d in range(22, D+1):
      if m = (d / 10) % 10 * (d % 10):
        count += 1
print(count)


### FIXED CODE ###

M,D = list(map(int, input().strip().split()))
count = 0
for m in range(2,M+1):
    for d in range(11, D+1):
        if ((d%10) >= 2) and (int(d/10) >= 2) and (m == int(d/10) * (d%10)):
            count+=1
print(count)
import numpy as np
while input()!='0':
    print('%.8f'%(np.std(np.array(list(map(float,input().split()))))))

### FIXED CODE ###

while input()!='0':
    l=list(map(float,input().split()))
    m=sum(l)/len(l)
    s=0
    for i in range(len(l)):
        s+=(l[i]-m)**2
    print('%.8f'%((s/len(l))**.5))
import numpy as np
n=int(input())
c=list(map(int, input().split()))
print(np.gcd.reduce(c))

### FIXED CODE ###

import fractions as f
n=int(input())
c=list(map(int, input().split()))
for i in range(1,n):
    c[i]=f.gcd(c[i-1],c[i])
ans=0
while True:
    if c[n-1]/2==c[n-1]//2:
        ans+=1
        c[n-1]/=2
    else:
        break
print(ans)
#%%
import sys
def input():
    return sys.stdin.readline().rstrip()

def main():
    N, M = map(int, input().split())
    a_list = [int(input()) for _ in range(M)]

    def comb(N):
        if N<0:
            return 0
        if N==0:
            return 1
        dp=[[0 for _ in range(N+1)] for _ in range(3)]
        for j in range(1,N+1):
            dp[0][j] = 1
            for i in [1,2]:
                if j == i:
                    dp[i][j] = dp[i-1][j]
                else:
                    dp[i][j] = dp[1][j-i] + dp[2][j-i]
        return dp[1][N]+dp[2][N]
    p = 0
    divider = 1000000007
    ans = 1
    for a in a_list:
        r = comb(a-1-p)%divider
        ans = ans * r
        p = a + 1
    else:
        if a < N:
            r = comb(N-p)%divider
            ans = ans * r
    ans = ans%divider
    print(ans)
        

# %%
if __name__ == '__main__':
    main()

# %%
# from atcoder_test import doTest
# doTest("abc129","c",main)

### FIXED CODE ###

#%%
import sys
def input():
    return sys.stdin.readline().rstrip()

def main():
    N, M = map(int, input().split())
    a_list = [int(input()) for _ in range(M)]

    p = 0
    steps=[]
    m = 0
    for a in a_list:
        if a != 1:
            steps.append((p, a-1))
            m = max(m, a-p)
        p = a + 1
    else:
        steps.append((p, N))
        m = max(m, N-p+1)

    dp=[0 for _ in range(m+1)]

    divider = 1000000007
    dp[0], dp[1] = 1, 1
    for i in range(2,m+1):
        dp[i]=(dp[i-1]+dp[i-2])%divider

    ans = 1
    for p, n in steps:
        if n < p:
            ans = 0
            break
        else:
            r = dp[n-p]
        ans = (ans*r)%divider 

    print(ans)
        

# %%
if __name__ == '__main__':
    main()

# %%
# from atcoder_test import doTest
# doTest("abc129","c",main)
a = int(input())
b = float(input())
Z = a*b
H = int(Z)
print(H)

### FIXED CODE ###

import decimal
Deci = decimal.Decimal

a, b = input().split()
x, y = Deci(a), Deci(b)
ans = int(x * y)
print(ans)
n,m = map(int, input().split())
sc= [map(int, input().split()) for _ in range(m)]
s, c = [list(i) for i in zip(*sc)]

ans = 10001
for l in range((10**(n-1))+1,10**n):
    ln = str(l)


    tmp = 0
    for j in range(m):
        if int(ln[int(s[j])-1]) == int(c[j]):
            tmp += 1
            # print(tmp)
            if tmp == m:
                ans = int(ln)
                print(ans)
                break

        else:
            # print(tmp)
            break
    if ans != 10001:
        break

if ans == 10001:
    print(-1)


### FIXED CODE ###

# n,m = map(int, input().split())
# sc = [map(int, input().split()) for _ in range(m)]
# s, c = [list(i) for i in zip(*sc)]
#
#
#
# for i in range(10**n):
#     ans = str(i)
#     if len(i) == n and all([i[s[j]-1] == str(c[j]) for j in range(m)]):
#         print(ans)
#         exit()
#
#
# print(-1)

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

s, c = [], []
for _ in range(m):
    s_, c_ = map(int, input().split())
    s.append(s_)
    c.append(c_)

for i in range(10 ** n):
    ans = str(i)
    if len(ans) == n and all([ans[s[j] - 1] == str(c[j]) for j in range(m)]):
        print(ans)
        exit()

print(-1)
LIM=200004
L=[0]*LIM

def bin_sum(Y):
    S=bin(Y)[2:]
    count=0
    for i in range(len(S)):
        count+=int(S[i])
    return count

def bin_sum2(Y):
    count=0
    for i in range(len(Y)):
        count+=int(Y[i])
    return count

for i in range(1,LIM):
    L[i]+=bin_sum(i)

def pop_num(N,b,L):
    if N==0:
        return 0
    v=N%b
    return pop_num(v,L[v],L)+1
    
M=[0]*200005
for i in range(1,200004):
    M[i]+=pop_num(i,L[i],L)
X=int(input())
Y=input()
zero=[]
for i in range(X):
    if Y[i]=="1":
        zero.append(i)
d=bin_sum2(Y)
e=int(Y,2)%(d+1)
f=int(Y,2)%max(1,(d-1))
for i in range(X):
    if i==zero[0]:
        b=max(d-1,1)
        flag=max(0,d-1)
        g=(f-2**(X-1-i)%b+b)%b
        zero.popleft()
    else:
        b=d+1
        flag=1
        g=(e+2**(X-1-i))%b

    if flag==0:
        print(0)
    elif g==0:
        print(1)
    else:
        print(M[g]+1)

### FIXED CODE ###

from collections import deque
LIM=200004
L=[0]*LIM

def bin_sum(Y):
    S=bin(Y)[2:]
    count=0
    for i in range(len(S)):
        count+=int(S[i])
    return count

def bin_sum2(Y):
    count=0
    for i in range(len(Y)):
        count+=int(Y[i])
    return count

for i in range(1,LIM):
    L[i]+=bin_sum(i)

def pop_num(N,b,L):
    if N==0:
        return 0
    v=N%b
    return pop_num(v,L[v],L)+1
    
M=[0]*200005
for i in range(1,200004):
    M[i]+=pop_num(i,L[i],L)
X=int(input())
Y=input()
d=bin_sum2(Y)
e=int(Y,2)%(d+1)
f=int(Y,2)%max(1,(d-1))
O=[1]*(X+2)
P=[1]*(X+2)
q=max(d-1,1)
for i in range(1,X+1):
    O[i]=O[i-1]*2%q
    P[i]=P[i-1]*2%(d+1)
for i in range(X):
    
    if int(Y[i])==1:
        b=max(d-1,1)
        flag=max(0,d-1)
        g=(f-O[X-1-i]+b)%b
    else:
        b=d+1
        flag=1
        g=(e+P[X-1-i])%b

    if flag==0:
        print(0)
    elif g==0:
        print(1)
    else:
        print(M[g]+1)
input_line=input().rstrip().slpit()
num1 = int(input_line[0])
num2 = int(input_line[1])
if (num1>num2):
  num = num2
elif(num<num2):
  num = num1
elif(num1=num2):
  num = num1
count = num
for i in range(count):
  print(num)

### FIXED CODE ###

input_line=input().rstrip().split()
num1 = int(input_line[0])
num2 = int(input_line[1])
 
if (num1 > num2):
  print(str(num2)*num1)
elif (num1 < num2):
  print(str(num1)*num2)
elif (num1 == num2):
  print(str(num1)*num2)
import math
def jk(j,k):
    return j*k//math.gcd(j,k)
a, b = map(int,input().split())
print(jk(a, b))

### FIXED CODE ###

import fractions
a, b = map(int,input().split())
def jk(j,k):
    return j*k//fractions.gcd(j,k)
print(jk(a, b))
n=int(input())
s=input()
list=ABCDEFGHIJKLMNOPQRSTUVWXYZ
for i in range(len(s)):
  x=list[(list.index(s[i])+n)%26]
  s.replace(s[i],x)

### FIXED CODE ###

n=int(input())
s=input()
t='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
for i in range(len(s)):
  x=t[(t.index(s[i])+n)%26]
  s=s[:i]+x+s[i+1:]
print(s)
from collections import deque
import sys

N, K = map(int, input().split())
A = deque(sorted(list(map(int, input().split()))))

mod = 10 ** 9 + 7
num = 0
Ans = 1

while num < K-1:
    non_minus = A[-1] * A[-2]
    minus = A[0] * A[1]
    if non_minus > minus:
        Ans = Ans * A.pop() % mod
        num += 1
    else:
        Ans = Ans * A.popleft() * A.popleft() % mod
        num += 2

if num == K - 1:
    Ans = Ans * A[-1] % mod
    
if A[-1] < 0 and K % 2 == 1:
    for i in range(K):
        Ans = Ans * A[i] % mod
    print(Ans)
    sys.exit()

print(Ans)
        

### FIXED CODE ###

mod = 10**9+7
N, K = map(int,input().split())
A = sorted(list(map(int,input().split())))

pi = 1
ni = 0
ans = 1
i = 0
while i < K-1:
  if A[ni]*A[ni+1] > A[-pi]*A[-pi-1]:
    ans = ans*A[ni]*A[ni+1]%mod
    ni += 2
    i += 2
    
  else:
    ans = ans*A[-pi]%mod
    pi += 1
    i += 1
    
if i == K-1:
  ans = ans*A[-pi]%mod
  
if A[-1]<0 and K%2==1:
  ans = 1
  for i in A[N-K:]:
    ans = ans*i%mod

print(ans)
"""B - K-th Common Divisor"""
A,B,K=(int(i) for i in input().split())
result=[]
for i in range(1,max(A,B)):
    if A%i==0 and B%i==0:
        result.append(i)
print(result[K-1])

### FIXED CODE ###

"""B - K-th Common Divisor"""
A,B,K=(int(i) for i in input().split())
result=[]
for i in range(1,101):
    if A%i==0 and B%i==0:
        result.append(i)
result.reverse()
print(result[K-1])
import re

string  = input()

m = re.match('A[a-z]+C[a-z]+',string)
if m.group() == string:
  
  print('AC')
else:
  print('WA')

### FIXED CODE ###

import re

string  = input()

m = re.match('A[a-z]+C[a-z]+',string)

if m != None:
  if m.group() == string:
    print('AC')
    exit()
print('WA')
n = int(input())
for i in range(9):
  for j in range(9):
    if (i+1)*(j+1) == n:
      print('Yes')
      exit()
Print('No')

### FIXED CODE ###

n = int(input())
for i in range(9):
  for j in range(9):
    if (i+1)*(j+1) == n:
      print('Yes')
      exit()
print('No')
N = int(input())
ls = []
ls2 = []
for i in range(N):
  ls.append(map(int,input().split()))
X = 0
Y = 0
for i in range(N):
  for j in range(i+1,N):
    X = (ls[i][0]-ls[j][0])**2
    Y = (ls[i][1]-ls[j][1])**2
    XY = (X+Y)**(0.5)
    ls2.apppend(XY)
if len(ls2) == 1:
  print(ls2[0])
else:
  ans = sum(ls2)*2/N
  print(ans)

### FIXED CODE ###

import math
N = int(input())
#距離の箱を作成
kyori = []
kyori2 = []
kyori3 = []
sumation = 0
for i in range(N):
    #N回繰り返す
    kyori.append(list(map(int,input().split())))
#x間の距離、y間の距離を算出
#ここで、2→1と1→2などは同じ距離なので計算しない
x_distance = 0
y_distance = 0
for i in range(0,N):
    for j in range(i+1,N):
        x_distance = (kyori[i][0]-kyori[j][0])**2
        y_distance = (kyori[i][1]-kyori[j][1])**2
        #xとyの距離を計算(sqrt導出)
        Kyorixy = math.sqrt(x_distance + y_distance)
        kyori2.append(Kyorixy)
if len(kyori2) == 1:
    print(kyori2[0])
else:
  goukei = sum(kyori2)*2/N
  print(goukei)
#include <bits/stdc++.h>
using namespace std;

int main() {
  int r, g;
  cin >> r >> g;
  cout << 2 * g - r << endl;
  return 0;
}


### FIXED CODE ###

r = int(input())
g = int(input())

print(2 * g - r)
a,b=map(str, input().split())
A = int(a)
B = 100*int(b[0])+10*int(b[1])+int(b[2])
ans = A*B / 100
print(int(ans))


### FIXED CODE ###

a,b=map(str, input().split())
A = int(a)
B = 100*int(b[0])+10*int(b[2])+ 1*int(b[3])
ans = A*B // 100
print(ans)
a,b=input().split()
c=(a*b)%2
if c == 1:
  print("Odd")
else:
  print("Even")

### FIXED CODE ###

a,b=map(int,input().split())
if (a*b)%2 == 1:
  print('Odd')
else:
  print('Even')
n = int(input())
a = list(map(int, input().split()))

r = 1
t = 10 ** 18
for i in a:
  r *= a
  if r > t:
    print(-1)
    return
print(r)

### FIXED CODE ###

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

# a = [0, 10, 10, 10, 10]

a.sort()
r = 1
t = 10 ** 18
for x in a:
  r *= x
  if r > t:
    break
if r <= t:
  print(r)
else:
  print(-1)
while True:
   m, f, r = [int(i) for i in input().split()]
 
   if m == f == r == -1:
      break
   elif m or f == -1:
      return F
   
   elif m + f >= 80:
      print("A")
   elif 65 <= m+f < 80:
      print("B")
   elif 50 <= m+f < 65:
      print("C")
   elif 30 <= m+f < 50:
      if r >= 50:
        print("C")
      else:
        print("D")
   elif m+f < 30:
      print("F")

### FIXED CODE ###

while True:
   m, f, r = [int(i) for i in input().split()]
 
   if m == f == r == -1:
      break
   total = m + f
   if m == -1 or f == -1 or total < 30:
      print("F")
   
   elif total < 50 and r < 50:
      print("D")

   elif r >= 50 or total < 65:
      print("C")
   
   elif total < 80:
      print("B")

   else:
      print("A")
import bisect
from collections import deque
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(reverse=True)
q.sort(reverse=True)
r.sort(reverse=True)
red_que = deque(p[:x])
green_que = deque(q[:y])
for i in range(c):
    if red_que[-1] < green_que[-1]:
        if red_que[-1] < r[i]:
            red_que.pop()
            bisect.insort_left(red_que, r[i])
        else:
            break
    else:
        if green_que[-1] < r[i]:
            green_que.pop()
            bisect.insort_left(green_que, r[i])
print(sum(green_que) + sum(red_que))

### FIXED CODE ###

import heapq
from collections import deque
import sys
input = sys.stdin.readline
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()
r.sort(reverse=True)
red_que = p[a-x:]
heapq.heapify(red_que)
green_que = q[b-y:]
heapq.heapify(green_que)
for i in range(c):
    re_mi = heapq.heappop(red_que)
    gr_mi = heapq.heappop(green_que)
    if re_mi < gr_mi:
        if re_mi < r[i]:
            heapq.heappush(red_que,r[i])
            heapq.heappush(green_que,gr_mi)
        else:
            heapq.heappush(green_que,gr_mi)
            heapq.heappush(red_que,re_mi)
            break
    else:
        if gr_mi < r[i]:
            heapq.heappush(red_que,re_mi)
            heapq.heappush(green_que,r[i])
        else:
            heapq.heappush(green_que,gr_mi)
            heapq.heappush(red_que,re_mi)
            break
print(sum(green_que) + sum(red_que))
import sys

sys.setrecursionlimit(10 ** 6)
INF = float("inf")
MOD = 10 ** 9 + 7


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


def main():
    H, W = map(int, input().split())
    A = []
    cnt = 0
    for _ in range(H):
        a = list(map(int, input().split()))
        cnt += sum(a)
        A.append(a)

    ans = []
    for h in range(H):
        if h % 2 == 0:
            for w in range(W):
                if h == H - 1 and w == W - 1:
                    continue
                if A[h][w] % 2 == 1:
                    if w == W:
                        A[h][w] -= 1
                        A[h + 1][w] += 1
                        ans.append((h, w, h + 1, w))
                    else:
                        A[h][w] -= 1
                        A[h][w + 1] += 1
                        ans.append((h, w, h, w + 1))
                else:
                    continue
        else:
            for w in range(W)[::-1]:
                if h == H - 1 and w == 0:
                    continue
                if A[h][w] % 2 == 1:
                    if w == 0:
                        A[h][w] -= 1
                        A[h + 1][w] += 1
                        ans.append((h, w, h + 1, w))
                    else:
                        A[h][w] -= 1
                        A[h][w + 1] += 1
                        ans.append((h, w, h, w + 1))
                else:
                    continue

    print(len(ans))
    for a, b, c, d in ans:
        print(a + 1, b + 1, c + 1, d + 1)

    print(A)


if __name__ == "__main__":
    main()


### FIXED CODE ###

import sys

sys.setrecursionlimit(10 ** 6)
INF = float("inf")
MOD = 10 ** 9 + 7


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


def main():
    H, W = map(int, input().split())
    A = []
    cnt = 0
    for _ in range(H):
        a = list(map(int, input().split()))
        cnt += sum(a)
        A.append(a)

    ans = []
    for h in range(H):
        if h % 2 == 0:
            for w in range(W):
                if h == H - 1 and w == W - 1:
                    continue
                if A[h][w] % 2 == 1:
                    if w == W - 1:
                        A[h][w] -= 1
                        A[h + 1][w] += 1
                        ans.append((h, w, h + 1, w))
                    else:
                        A[h][w] -= 1
                        A[h][w + 1] += 1
                        ans.append((h, w, h, w + 1))
                else:
                    continue
        else:
            for w in range(W)[::-1]:
                if h == H - 1 and w == 0:
                    continue
                if A[h][w] % 2 == 1:
                    if w == 0:
                        A[h][w] -= 1
                        A[h + 1][w] += 1
                        ans.append((h, w, h + 1, w))
                    else:
                        A[h][w] -= 1
                        A[h][w - 1] += 1
                        ans.append((h, w, h, w - 1))
                else:
                    continue

    print(len(ans))
    for a, b, c, d in ans:
        print(a + 1, b + 1, c + 1, d + 1)


if __name__ == "__main__":
    main()
s = input()
K = int(input())
lst = []
if len(s) == 1:
    print(s)
    exit()
for end in range(1, min(K, len(s))):
    start = 0
    while end < len(s)+1:
        if s[start:end] not in lst:
            lst.append(s[start:end])
        start += 1
        end += 1
lst.sort()
print(lst[-K])

### FIXED CODE ###

s = input()
K = int(input())
lst = []
for end in range(1, min(K+1, len(s)+1)):
    start = 0
    while end < len(s)+1:
        if s[start:end] not in lst:
            lst.append(s[start:end])
        start += 1
        end += 1
lst.sort()
print(lst[K-1])
from itertools import product
n, *AB = map(int, open(0).read().split())
A, B = AB[::2], AB[1::2]
A, B = map(sorted, [A, B])
mid = n//2
if n % 2 == 0:
    a, b = A[mid-1], B[mid-1]
    X = range(a, b+1)
    a, b = A[mid], B[mid]
    Y = range(a, b+1)
    Z = {(a+b)/2 for a, b in product(X, Y)}
    print(len(Z))
else:
    print(B[mid] - A[mid] + 1)


### FIXED CODE ###

n, *AB = map(int, open(0).read().split())
A, B = map(sorted, [AB[::2], AB[1::2]])
mid = n//2
if n % 2 == 0:
    a0, a1 = A[mid-1], A[mid]
    b0, b1 = B[mid-1], B[mid]
    print(b0+b1 - (a0+a1) + 1)
else:
    print(B[mid] - A[mid] + 1)