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

def neighbor(N, edges):
    neighbor_list = [[] for _ in range(N)]
    for i in range(N):
        for vs in edges:
            if i + 1 in vs: # vsは頂点i+1が含まれるedge
                neighbor_list[i] += vs
        neighbor_list[i] = list(set(neighbor_list[i]))
        if i + 1 in neighbor_list[i]:
            neighbor_list[i].remove(i + 1)
        
    return neighbor_list

def neighbor2(N, edges):
    nlist = neighbor(N, edges)
    nneighbor_list = [[] for _ in range(N)]
    for i in range(N):
        nneighbor_list[i] += nlist[i]
        for e in nlist[i]:
            nneighbor_list[i] += nlist[e - 1]
        nneighbor_list[i] = list(set(nneighbor_list[i]))
        if i + 1 in nneighbor_list[i]:
            nneighbor_list[i].remove(i + 1)
    return nneighbor_list
        
        
def combination(N, K, nnlist):
    combi = 1
    clist = [False]*N
    for v in range(N):
        print(combi)
        combi *= (K - len([t for t in nnlist[v] if clist[t-1]]))
        clist[v] = True
    return combi

def paint(N, K, nlist, nnlist, clist, vlist, combi):
    vlist_next = []
    for v in vlist:
        #nnlistの中で塗られている頂点の数を数え、色候補数Kから引く
        combi *= (K - len([t for t in nnlist[v - 1] if clist[t - 1]])) 
        clist[v - 1] = True #頂点vを塗る
        vlist_next += [t for t in nlist[v - 1] if not clist[t - 1]]
    return combi, vlist_next, clist


if __name__ == '__main__':
    N, K = map(int, input().split())
    edges = [None]*(N-1)
    
    for i in range(N-1):
        edges[i] = list(map(int, input().split()))
    
    nlist = neighbor(N, edges)
    nnlist = neighbor2(N, edges)
    
    vlist_next = [1]
    combi = 1
    clist = [False]*N
    for i in range(N):
        combi, vlist_next, clist = paint(N, K, nlist, nnlist, clist=clist, vlist=vlist_next, combi=combi)
        if len(vlist_next) == 0:
            break
    
    print(combi%1000000007)

### FIXED CODE ###

import sys
sys.setrecursionlimit(1000000)

def neighbor(N, edges):
    neighbor_list = [[] for _ in range(N)]
    for a, b in edges:
        neighbor_list[a-1] += [b-1]
        neighbor_list[b-1] += [a-1]
        
    return neighbor_list


def paint(K, nlist, now_num, from_num, case_num):
        mod = 1000000007
        if  from_num == -1:
            can_use_color = K - 1
        else:
            can_use_color = K - 2
        
        if len(nlist[now_num]) - 1 > can_use_color:
            return 0
        
        for child in nlist[now_num]:
            if child == from_num:
                continue
            else:
                case_num *= can_use_color
                can_use_color -= 1
                case_num %= mod
        
        for child in nlist[now_num]:
            if child == from_num:
                continue
            else:
                case_num = paint(K, nlist, child, now_num, case_num)
        return case_num%mod
            

if __name__ == '__main__':
    N, K = map(int, input().split())
    edges = [None]*(N-1)
    
    for i in range(N-1):
        edges[i] = list(map(int, input().split()))
    
    nlist = neighbor(N, edges)


    print(paint(K, nlist, 0, -1, K))
### BUGGY CODE ###

a,b,x = list(map(int, input().split()))
cnt = 0

for i in range(a, b + 1):
    if i % x == 0:
        cnt += 1

print(cnt)

### FIXED CODE ###

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

if a == 0:
    print(b // x + 1)
else:
    print((b // x + 1) - ((a - 1) // x + 1))
### BUGGY CODE ###

# 2019/03/24
# AtCoder Beginner Contest 122 - C
 
# Input
n, q = map(int,input().split())
s = input()
sab = list()
aclist = list()
 
j = 0
while(j < n-1):
    if s[j] == "A":
        if s[j+1] == "C":
            aclist.append(j+1)
            j += 2
        else:
            j += 1
    else:
        j += 1

for k in range(q):
    l, r = map(int,input().split())
    ans = 0
    
    t_idx = len(aclist) - 1
    b_idx = 0
    search_idx = int(len(aclist) / 2)
 
    while(b_idx + 1 < t_idx and aclist[search_idx] != l):
        if aclist[search_idx] > l:
            t_idx = search_idx
            search_idx = int((t_idx + b_idx) / 2)
        elif aclist[search_idx] < l:
            b_idx = search_idx
            search_idx = int((t_idx + b_idx) / 2)
    for i in range(search_idx, len(aclist), 1):
        if aclist[i] >= l:
            if aclist[i] < r:
                ans += 1
            else:
                break
        else:
            continue
 
    # Output
    print(ans)

### FIXED CODE ###

# 2019/04/28
# AtCoder Beginner Contest 122 - C

# Input
n, q = map(int,input().split())
s = input()

acgt = ["A", "C", "G", "T"]
acgtl = list()
acgtl.append(0)

# Search AC and make Accumed sum
for i in range(n-1):
    if s[i] == "A" and s[i+1] == "C":
        acgtl.append(acgtl[i]+1)
    else:
        acgtl.append(acgtl[i])
        
# Calc AC count
for x in range(q):
    l, r = map(int,input().split())
    ans = acgtl[r-1] - acgtl[l-1]
    print(ans)
### BUGGY CODE ###

AB = input().split(' ')
A = int(AB[0])
B = int(AB[1])
 
def cf(x1,x2):
    cf=[]
    for i in range(2,min(x1,x2)+1):
        if x1 % i == 0 and x2 % i == 0:
            cf.append(i)
    cf.insert(0,1)
    return cf
 
def check_cf(x1,x2):
    for i in range(2,min(x1,x2)+1):
        if x1 % i == 0 and x2 % i == 0:
            return False
    return True
candidate = cf(A,B)
decided_list = [candidate[0]]
 
for i in range(1,len(candidate)):
    flag = True
    for s in range(2,candidate[i]):
        if candidate[i]%s == 0:
            flag = False
            break
    if flag:
        decided_list.append(candidate[i])
print(len(decided_list))

### FIXED CODE ###

AB = input().split(' ')
A = int(AB[0])
B = int(AB[1])
'''
def cf(x1,x2):
    cf=[]
    for i in range(2,min(x1,x2)+1):
        if x1 % i == 0 and x2 % i == 0:
                cf.append(i)
    return cf
 
def check_cf(x1,x2):
    for i in range(2,min(x1,x2)+1):
        if x1 % i == 0 and x2 % i == 0:
            return False
    return True
candidate = cf(A,B)
'''
'''
decided_list = [candidate[0]]
 
for i in range(1,len(candidate)):
    flag = True
    for s in range(2,candidate[i]):
        if candidate[i]%s == 0:
            flag = False
            break
    if flag:
        decided_list.append(candidate[i])
'''
#print(candidate)
def factorization(n):
    arr = []
    temp = n
    for i in range(2, int(-(-n**0.5//1))+1):
        if temp%i==0:
            cnt=0
            while temp%i==0:
                cnt+=1
                temp //= i
            arr.append([i, cnt])
    if temp!=1:
        arr.append([temp, 1])
    if arr==[]:
        arr.append([n, 1])
    return arr

def gcd(num1: int, num2: int) -> int:
    if num2 == 0:
        return num1
    else:
        return gcd(num2,num1%num2)
max_gcd = gcd(A,B)
result = factorization(max_gcd)
#print(result)
if len(result) == 1 and result[0][0] == 1:
    print(1)
else:
    print(len(result)+1)
### BUGGY CODE ###

N, M  = map(int, input().split(" "))
Alist = list(map(int, input().split(" ")))
Alist.sort()
ans = 0
#print(Alist)
for i in range(M):
    b, c = map(int, input().split(" "))
    for j in range(b):
        if Alist[j] < c:
            Alist[j] = c
    Alist.sort()

for k in range(N):
    ans += Alist[k]

print(ans)

### FIXED CODE ###

N, M  = map(int, input().split(" "))
Alist = list(map(int, input().split(" ")))
bclist = []
leng = len(Alist)
ans = 0
#print(Alist)
for i in range(M):
    b, c = (map(int, input().split(" ")))
    bclist.append([c,b])
bclist.sort(reverse = True)
#print(bclist)

count = 0
for j in range(M):
    for n in range(bclist[j][1]):
        Alist.append(bclist[j][0])
    count += bclist[j][1]
    if count >= leng:
        break
    

Alist.sort()

for k in range(leng):
    ans += Alist[-k-1]

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

N=int(input())
A=list(map(int,input().split()))
sum=0
for i in range(N-1):
  for j in range(i+1,N):
    if j-i==A[i]+A[j]:
      sum=sum+1
print(sum)
    
  

### FIXED CODE ###

n=int(input())
A=list(map(int,input().split()))
L=[]
R=[]
for i in range(n):
  L.append(i+A[i])
  R.append(i-A[i])
from collections import Counter
zisyo=Counter(R)
ans=0
for i in L:
  ans=ans+zisyo.get(i,0)
print(ans)
### BUGGY CODE ###

A, B, C, D = map(int, input().split())

c = 0
for n in range(A, B + 1):
    if n % C != 0 and n % D != 0:
        c += 1

print(c)

### FIXED CODE ###

import fractions

A, B, C, D = map(int, input().split())
LCM = C * D // fractions.gcd(C, D)

R = (B - A) + 1
R1 = (A - 1) // C + (A - 1) // D - ((A-1) // LCM)
R2 = B // C + B // D - (B // LCM)

RR = R - (R2 - R1)

print(RR)
### BUGGY CODE ###

k,s = map(int,input().split())
count=0
for x in range(k+1):
    if(x > s):
        break
    for y in range(k+1):
        if((y+x) > s):
            break
        for z in range(k+1):
            nsum = x+y+z
            if(nsum==s):
                count += 1
print(count)

### FIXED CODE ###

k,s = map(int,input().split())
ans=0
for x in range(k+1):
    for y in range(k+1):
        z = s - x - y
        if(z < 0 or z > k):
           continue
        ans += 1 
print(ans)
### BUGGY CODE ###

from math import ceil,floor,factorial,gcd,sqrt,log2,cos,sin,tan,acos,asin,atan,degrees,radians,pi,inf
from itertools import accumulate,groupby,permutations,combinations,product,combinations_with_replacement
from collections import deque,defaultdict,Counter
from bisect import bisect_left,bisect_right
from operator import itemgetter
from heapq import heapify,heappop,heappush
from queue import Queue,LifoQueue,PriorityQueue
from copy import deepcopy
from time import time
import string
import sys
sys.setrecursionlimit(10 ** 7)
def input() : return sys.stdin.readline().strip()
def INT()   : return int(input())
def MAP()   : return map(int,input().split())
def LIST()  : return list(MAP())

def cmb(n,k,p):
  """power_funcを用いて(nCk) mod p を求める"""
  from math import factorial
  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*power_func(b,p-2,p)*power_func(c,p-2,p))%p
def power_func(a,b,p):
  """a^b mod p を求める"""
  if b==0: return 1
  if b%2==0:
    d=power_func(a,b//2,p)
    return d*d %p
  if b%2==1:
    return (a*power_func(a,b-1,p))%p

x, y = MAP()
a = 2*x - y
b = 2*y - x

if a >= 0 and b >= 0 and a % 3 == 0 and b % 3 == 0:
    a //= 3
    b //= 3
    ans = cmb(a+b, a, 10**9+7)
else:
    ans = 0

print(ans)

### FIXED CODE ###

from math import ceil,floor,factorial,gcd,sqrt,log2,cos,sin,tan,acos,asin,atan,degrees,radians,pi,inf,comb
from itertools import accumulate,groupby,permutations,combinations,product,combinations_with_replacement
from collections import deque,defaultdict,Counter
from bisect import bisect_left,bisect_right
from operator import itemgetter
from heapq import heapify,heappop,heappush
from queue import Queue,LifoQueue,PriorityQueue
from copy import deepcopy
from time import time
import string
import sys
sys.setrecursionlimit(10 ** 7)
def input() : return sys.stdin.readline().strip()
def INT()   : return int(input())
def MAP()   : return map(int,input().split())
def LIST()  : return list(MAP())

def cmb(n, r, mod):
    if ( r<0 or r>n ):
        return 0
    r = min(r, n-r)
    return g1[n] * g2[r] * g2[n-r] % mod

mod = 10**9+7 #出力の制限
N = 10**6
g1 = [1, 1] # 元テーブル
g2 = [1, 1] #逆元テーブル
inverse = [0, 1] #逆元テーブル計算用テーブル

for i in range( 2, N + 1 ):
    g1.append( ( g1[-1] * i ) % mod )
    inverse.append( ( -inverse[mod % i] * (mod//i) ) % mod )
    g2.append( (g2[-1] * inverse[-1]) % mod )

x, y = MAP()
a = 2*x - y
b = 2*y - x

if a >= 0 and b >= 0 and a % 3 == 0 and b % 3 == 0:
    a //= 3
    b //= 3
    ans = cmb(a+b, a, 10**9+7)
else:
    ans = 0

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

N=int(input())
p=list(map(int,input().split()))
a=0

for i in range(N):
  if min(p[0:i+1])==p[i]:
    a+=1
print(a)

  

### FIXED CODE ###

N=int(input())
p=list(map(int,input().split()))
a=0
b=p[0]
for i in range(N):
  if p[i]<=b:
    a+=1
    b=p[i]
  else:
    pass
print(a)
### BUGGY CODE ###

x,y,z,k = map(int,input().split())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
c = list(map(int,input().split()))
ans = []
for i in range(x):
    for j in range(y):
        ans.append(a[i]+b[j])
ans.sort(reverse=True)
ans = ans[:k]
ans2 = []
for i in range(len(ans)):
    for j in range(z):
        ans2.append(ans[i]+c[j])
ans2.sort(reverse=True)
for i in range(k):
    print(ans2[i])

### FIXED CODE ###

x,y,z,k = map(int,input().split())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
c = list(map(int,input().split()))
ans = []
for i in range(x):
    for j in range(y):
        ans.append(a[i]+b[j])
ans.sort(reverse=True)
ans = ans[:k]
ans2 = []
for i in range(len(ans)):
    for j in range(z):
        ans2.append(ans[i]+c[j])
ans2.sort(reverse=True)
for i in range(k):
    print(ans2[i])
### BUGGY CODE ###

from scipy.sparse.csgraph import dijkstra
from scipy.sparse import csr_matrix

n = int(input())
l = [[0]*n for _ in range(n)]
for _ in range(n-1):
  a, b, c = map(int, input().split())
  l[a-1][b-1] = c
  l[b-1][a-1] = c
csr = csr_matrix(l)
q, k = map(int, input().split())
A = dijkstra(csr, indices=k-1)
for _ in range(q):
  x, y = map(int, input().split())
  print(int(A[x-1] + A[y-1]))

### FIXED CODE ###

import sys
sys.setrecursionlimit(10**7)

n = int(input())
l = [[] for _ in range(n)]
for _ in range(n-1):
  a, b, c = map(int, input().split())
  l[a-1].append([b-1, c])
  l[b-1].append([a-1, c])
q, k = map(int, input().split())
dist = [-1]*n
dist[k-1] = 0
def dfs(v):
  for nv, c in l[v]:
    if dist[nv] == -1:
      dist[nv] = dist[v]+c
      dfs(nv)
dfs(k-1)
for _ in range(q):
  x, y = map(int, input().split())
  print(dist[x-1] + dist[y-1])
### BUGGY CODE ###

import sys
input = sys.stdin.readline

n, m = map(int, input().split())
A = list(map(int, input().split()))
A.sort()

for _ in range(m):
    max_price = max(A)
    max_index = A.index(max_price)
    max_price //= 2
    A[max_index] = max_price

total = sum(A)
print(total)


### FIXED CODE ###

import heapq
import sys
input = sys.stdin.readline

n, m = map(int, input().split())
A = map(int, input().split())
A = list(map(lambda x: x*(-1), A))
heapq.heapify(A)

for _ in range(m):
    max_price = -heapq.heappop(A) // 2
    heapq.heappush(A, -max_price)

total = -sum(A)
print(total)
### BUGGY CODE ###

import sys


def main():
    N = int(input())
    #P = tuple(map(int, input().split()))
    P = (map(int, input().split()))

    Kcost = [min(row, N - 1 - row, clm, N - 1 - clm) for row in range(N) for clm in range(N)]

    Sitting = [1] * (N * N)
    Kcount = 0


    def Kcheck(qsn, cdsn):
        if Kcost[cdsn] > Kcost[qsn] + Sitting[qsn]:
            Kcost[cdsn] = Kcost[qsn] + Sitting[qsn]
            queue.append(cdsn)


    for sn in P:
        csn = sn - 1
        Kcount += Kcost[csn]
        Sitting[csn] = 0
        queue = [csn]

        while queue:
            qsn = queue.pop()
            div, mod = divmod(qsn, N)
            if mod: Kcheck(qsn, qsn - 1)
            if mod != N - 1: Kcheck(qsn, qsn + 1)
            if div: Kcheck(qsn, qsn - N)
            if div != N - 1: Kcheck(qsn, qsn + N)

    print(Kcount)


if __name__ == '__main__':
    main()

sys.exit()


### FIXED CODE ###

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

Kcost = [min(row, N - 1 - row, clm, N - 1 - clm) for row in range(N) for clm in range(N)]

Sitting = [1] * (N * N)
Kcount = 0


def Kcheck(qsn, cdsn):
    if Kcost[cdsn] > Kcost[qsn] + Sitting[qsn]:
        Kcost[cdsn] = Kcost[qsn] + Sitting[qsn]
        queue.append(cdsn)


for sn in P:
    csn = sn - 1
    Kcount += Kcost[csn]
    Sitting[csn] = 0
    queue = [csn]

    while queue:
        qsn = queue.pop()
        div, mod = divmod(qsn, N)
        if mod: Kcheck(qsn, qsn - 1)
        if mod != N - 1: Kcheck(qsn, qsn + 1)
        if div: Kcheck(qsn, qsn - N)
        if div != N - 1: Kcheck(qsn, qsn + N)

print(Kcount)
### BUGGY CODE ###

n = int(input())
a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
cap = [a,b,c,d,e]
p0 = [n,0,0,0,0,0]
time = 0
import copy
while p0[5] != n:
    p1 = copy.copy(p0)
    for i in range(5):
        p1[i+1] += min(p0[i],cap[i])
    for i in range(5):
        p1[i] -= min(p0[i],cap[i])
    time += 1
    p0 = copy.copy(p1)

print(time)

### FIXED CODE ###

n = int(input())
a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
import math
print(math.ceil(n/min(a,b,c,d,e))+4)
### BUGGY CODE ###

num = (10 ** 9) + 7

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

prime_upper = int(m ** (1/2) + 10)
prime_dict = {}

check = [False] * prime_upper
prime = [2]

while m % 2 == 0:
    m //= 2
    if not 2 in prime_dict.keys():
        prime_dict[2] = 0
    prime_dict[2] += 1

for j in range(2, prime_upper, 2):
    check[j] = True

for i in range(3, prime_upper, 2):
    if not check[i]:
        prime.append(i)
        while m % i == 0:
            m //= i
            if not i in prime_dict.keys():
                prime_dict[i] = 0
            prime_dict[i] += 1

        for j in range(i, prime_upper, i):
            check[j] = True

com2 = [[0] * 50 for _ in range(n + 1)]
for i in range(1, n + 1):
    for j in range(1, 50):
        if i == 1:
            com2[i][j] = 1
        elif j == 1:
            com2[i][j] = i
        else:
            com2[i][j] = (com2[i][j - 1] + com2[i - 1][j]) % num
if m != 1:
    ans = n
else:
    ans = 1
for key, value in prime_dict.items():
    ans = (ans * com2[n][value]) % num

print(ans)

### FIXED CODE ###

num = (10 ** 9) + 7

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

if m == 1:
    print(1)
    exit()

prime_upper = int(m ** (1/2) + 50)
prime_dict = {}

check = [False] * prime_upper
prime = [2]

while m % 2 == 0:
    m //= 2
    if not 2 in prime_dict.keys():
        prime_dict[2] = 0
    prime_dict[2] += 1

for j in range(2, prime_upper, 2):
    check[j] = True

for i in range(3, prime_upper, 2):
    if not check[i]:
        prime.append(i)
        while m % i == 0:
            m //= i
            if not i in prime_dict.keys():
                prime_dict[i] = 0
            prime_dict[i] += 1

        for j in range(i, prime_upper, i):
            check[j] = True

if len(prime_dict.values()) != 0:
    value_max = max(prime_dict.values())
    com2 = [[0] * (value_max + 1) for _ in range(n + 1)]
    for i in range(1, n + 1):
        for j in range(1, value_max + 1):
            if i == 1:
                com2[i][j] = 1
            elif j == 1:
                com2[i][j] = i
            else:
                com2[i][j] = (com2[i][j - 1] + com2[i - 1][j]) % num
    if m != 1:
        ans = n
    else:
        ans = 1
    for key, value in prime_dict.items():
        ans = (ans * com2[n][value]) % num
    print(ans)
else:
    print(n)
### BUGGY CODE ###

from itertools import product

X, Y, Z, K = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))

AB = [a + b for a, b in product(A, B)]
AB.sort(reverse=True)

ABC = [ab + c for ab, c in product(AB[:K], C)]
ABC.sort(reverse=True)

for abc in ABC[:K]:
    print(abc)

### FIXED CODE ###

from itertools import product

X, Y, Z, K = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))

AB = [a + b for a, b in product(A, B)]
AB.sort(reverse=True)

ABC = [ab + c for ab, c in product(AB[:K], C)]
ABC.sort(reverse=True)

for abc in ABC[:K]:
    print(abc)
### BUGGY CODE ###

N, K = map(int, input().split())
S = input()

def f1(s, l, r):
  return s[:l] + f2(s[l:r + 1]) + s[r + 1:]

def f2(s):
  t = list(s)
  t.reverse()
  return ''.join('R' if c == 'L' else 'L' for c in t)

def f3(s):
  before = s[0]
  result = 0
  for i in range(1, N):
    if s[i] == before:
      result += 1
    else:
       before = s[i]
  return result

def f4(s, c):
  lstart = -1
  llen = 0
  tstart = -1
  for i in range(N):
    if s[i] == c and tstart == -1:
      tstart = i
    if s[i] != c and tstart != -1:
      tlen = i - tstart
      if tlen > llen:
        lstart = tstart
        llen = tlen
      tstart = -1
  if tstart != -1:
    tlen = N - tstart
    if tlen > llen:
      lstart = tstart
      llen = tlen
  return (lstart, llen)

for _ in range(K):
  lstart, llen = f4(S, 'L')
  #print('X', lstart, llen)
  rstart, rlen = f4(S, 'R')
  #print('Y', rstart, rlen)
  if lstart == -1 or rstart == -1:
    break
  if lstart < rstart:
    #print(lstart + llen, rstart + rlen - 1)
    S = f1(S, lstart + llen, rstart + rlen - 1)
  else:
    #print(rstart + rlen, lstart + llen - 1)
    S = f1(S, rstart + rlen, lstart + llen - 1)
  #print(S)

print(f3(S))

### FIXED CODE ###

N, K = map(int, input().split())
S = input()
c = 0
for i in range(1, N):
  if S[i] == S[i - 1]:
    c += 1
print(min(N - 1, c + K * 2))
### BUGGY CODE ###

from itertools import combinations
import bisect
import copy

def move(positions, tmp_X, N, tmp_ans):
  min_dif = float('inf')
  min_idx = None
  min_x = None
  for x in tmp_X:
    idx = bisect.bisect_left(positions,x)
    if idx == N:
      tmp_dif = abs(x-positions[idx-1])
      tmp_idx = idx -1
    elif idx == 0:
      tmp_dif = abs(x-positions[idx])
      tmp_idx = idx
    else:
      dif1, dif2 = abs(x-positions[idx-1]), abs(x-positions[idx])
      if dif1 >= dif2:
        tmp_dif = dif2
        tmp_idx = idx
      else:
        tmp_dif = dif1
        tmp_idx = idx - 1

    if min_dif > tmp_dif:
      min_dif = tmp_dif
      min_idx = tmp_idx
      min_x = x
  
  positions[min_idx] = min_x
  positions.sort()
  tmp_X.remove(min_x)
  return tmp_ans + min_dif

N,M = map(int,input().split())
X = list(map(int,input().split()))

if N >= M:
  print(0)
  exit()

ans = float('inf')
for cmb in combinations(X,N):
  tmp_ans = 0
  tmp_X = copy.deepcopy(X)
  positions = sorted(list(cmb))
  for position in positions: tmp_X.remove(position)
  
  while len(tmp_X) > 0:
    tmp_ans = move(positions, tmp_X, N, tmp_ans)
  ans = min(tmp_ans, ans)
print(ans)

### FIXED CODE ###

N,M = map(int,input().split())
if M == 1:
  print(0)
  exit()

X = sorted(list(map(int,input().split())))
difX = [0] + [X[i+1]-X[i] for i in range(M-1)]
difX.sort(reverse=True)
print(sum(difX)-sum(difX[:N-1]))
### BUGGY CODE ###

import re
import sys
import numpy as np

s = sys.stdin.buffer.readline().rstrip().decode()
cc = np.arange(1, 200001)
c = [2019*i for i in cc]
ans = 0

for i in range(199999):
    tmp = str(c[i])
    if tmp in s:
        index = -1
        while True:
            index = s.find(tmp, index + 1)
            if index == -1:
                break
            ans += 1
    if int(tmp) > int(s):
        break
print(ans)


### FIXED CODE ###

import sys

s = sys.stdin.buffer.readline().rstrip().decode()
MOD = 2019
ans = [1] + [0 for i in range(MOD)]
t = 1
r = 0
for i in reversed(s):
    r = (r + int(i)*t) % MOD
    t = t*10%2019
    ans[r] += 1
print(sum([m*(m-1)//2 for m in ans]))