Harryxun/stf_run huggingface dataset:
s = input()
K = int(input())
N = len(s)
ans = []

for i in range(1, min(N, 6)):
    for j in range(N - i + 1):
        ans.append(s[j:j+i])

ans = list(set(ans))
ans.sort()
print(ans[K-1])

### FIXED CODE ###

s = input()
K = int(input())
one = list(set(s))
check = 2
if len(s) >= 2:
    while check <= len(s) and check <= 5:
        for i in range(len(s) - check + 1):
            one.append(s[i:i+check])
        check += 1
    one = sorted(set(one))
    print(one[K-1])
    
     
else:
    one = sorted(one)
    print(one[K-1])
n = int(input())
w = input().split(" ")

a = []
k = False
for i in range(n):
    a.append(int(w[i]))
    if a[i] < 0:
        a[i] *= -1
        k = not(k)
    if i == 1:
        min = a[i]
    if a[i] < min:
        min = a[i]

sum = sum(a)
if k:
    sum -= min
print(sum)

### FIXED CODE ###

n = int(input())
w = input().split(" ")

a = []
m = 0
k = False
for i in range(n):
    a.append(int(w[i]))
    if a[i] < 0:
        a[i] *= -1
        k = not (k)
    if i == 0:
        m = a[i]
    if a[i] < m:
        m = a[i]

sum = sum(a)
if k:
    sum -= m*2
print(sum)
import math

N,K=map(int,input().split())
a=[0]*N
a=list(map(int,input().split()))
A=np.array(a)
b=np.zeros(N)
for i in range(K):
    if(K*N==sum(A)):
        break
    b=np.zeros(N)
    for j in range(N):

        minmin=max(0,math.ceil(j-A[j]-0.5))

        maxmax=min(N,math.floor(j+A[j]+0.5)+1)

        if(minmin==maxmax):
            maxmax=maxmax+1
            if(N<=maxmax):
                minmin=N-1
                maxmax=N

        for k in range(minmin,maxmax):
            b[k]=b[k]+1

    A=b
A=A.astype(np.int)
da=list(A)
L=[str(a) for a in da]

da=" ".join(L)
print(da)


### FIXED CODE ###

import math
N,K=map(int,input().split())
A=[0]*N
A=list(map(int,input().split()))

da=[0 for i in range(N)]
for k in range(K):
    B=[0 for i in range(N)]
    for i in range(N):
        l=max(0,i-A[i])
        r=min(N-1,i+A[i])
        B[l]=B[l]+1
        if(r+1<N):
            B[r+1]=B[r+1]-1
    for i in range(1,N):
        B[i]=min(N,B[i]+B[i-1])
    if(A==B):
        break
    A=B
b=[str(i) for i in B]
b=" ".join(b)
print(b)
from fractions import gcd
n = int(input())
a = [int(i) for i in input().split()]

b = 1
for i in a:
    b = b * i // gcd(b, i)

ans = 0
for i in a:
    ans += b // i
    ans %= 10**9+7

print(ans

### FIXED CODE ###

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

def pr(x):
    a=[]
    i=2
    while True:
        if x % i == 0:
            j=0
            while x % i == 0:
                x //= i
                j += 1
            a.append((i, j))
        if i * i > x:
            break
        i += 1
    if x != 1:
        a.append((x,1))
    return a
c = {}
for i in a:
    d = pr(i)
    for j in d:
        if j[0] in c:
            c[j[0]] = max(c[j[0]], j[1])
        else:
            c[j[0]] = j[1]

b = 1
for i in c:
    b *= pow(i, c[i], p)
    b %= p
ans = 0
for i in a:
    ans += b * pow(i, p - 2, p)
    ans %= p
print(ans)
from math import log2
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))

k-=1

m=int(log2(k))
nxt=[[0]*n for _ in range(m+1)]
point=[[0]*n for _ in range(m+1)]
for i in range(n):
  p[i]-=1
  nxt[0][i]=p[i]
  point[0][i]=c[p[i]]
for j in range(m):
  for i in range(n):
    nxt[j+1][i]=nxt[j][nxt[j][i]]
    point[j+1][i]=point[j][i]+point[j][nxt[j][i]]
min_nk=min(n,k)
ans=-10**18
for s in range(n):
  pla=p[s]
  cur=c[pla]
  if ans<cur:
    ans=cur
  for _ in range(min_nk):
    pla=p[pla]
    cur+=c[pla]
    if ans<cur:
      ans=cur
  if n<k:
    pla=p[s]
    cur=c[pla]
    for i in range(m+1):
      if (k-n)&(1<<i):
        cur+=point[i][pla]
        pla=nxt[i][pla]
    res=cur
    for _ in range(n):
      pla=p[pla]
      cur+=c[pla]
      if res<cur:
        res=cur
    if ans<res:
      ans=res
print(ans)

### FIXED CODE ###

from math import log2
n,k=map(int,input().split())
p=list(map(int,input().split()))
c=list(map(int,input().split()))

k-=1

m=int(log2(k)) if 1<k else 1
nxt=[[0]*n for _ in range(m+1)]
point=[[0]*n for _ in range(m+1)]
for i in range(n):
  p[i]-=1
  nxt[0][i]=p[i]
  point[0][i]=c[p[i]]
for j in range(m):
  for i in range(n):
    nxt[j+1][i]=nxt[j][nxt[j][i]]
    point[j+1][i]=point[j][i]+point[j][nxt[j][i]]
min_nk=min(n,k)
ans=-10**18
for s in range(n):
  pla=p[s]
  cur=c[pla]
  if ans<cur:
    ans=cur
  for _ in range(min_nk):
    pla=p[pla]
    cur+=c[pla]
    if ans<cur:
      ans=cur
  if n<k:
    pla=p[s]
    cur=c[pla]
    for i in range(m+1):
      if (k-n)&(1<<i):
        cur+=point[i][pla]
        pla=nxt[i][pla]
    res=cur
    for _ in range(n):
      pla=p[pla]
      cur+=c[pla]
      if res<cur:
        res=cur
    if ans<res:
      ans=res
print(ans)
import numpy as np


def calc(mae, now):
    if mae == 3:
        if now == 0:
            return 3
        elif now == 1:
            return 2
        elif now == 2:
            return 1
    elif mae == 2:
        if now == 0:
            return 2
        elif now == 1:
            return 1
    elif mae == 1:
        if now == 0:
            return 1


if __name__ == "__main__":
    n = int(input())
    a = np.array(list(map(int, input().split())))
    mod = 10**9+7

    memo = np.zeros(n+1, dtype=int)
    memo[0] = 3
    ans = 1
    for i in a:
        mae = memo[i]
        now = memo[i+1]
        ans *= calc(mae, now)
        ans %= mod

        memo[i+1] += 1

    print(ans)


### FIXED CODE ###

import numpy as np


if __name__ == "__main__":
    n = int(input())
    a = np.array(list(map(int, input().split())))
    mod = 10**9+7

    memo = np.zeros(n+10, dtype=int)
    memo[0] = 3
    ans = 1
    for i in a:
        mae = memo[i]
        now = memo[i+1]
        ans *= mae-now
        ans %= mod

        memo[i+1] += 1

    print(ans)
class UnionFind():
    def __init__(self, n):
        self.n = n
        self.parents = [-1] * n

    def find(self, x):
        if self.parents[x] < 0:
            return x
        else:
            self.parents[x] = self.find(self.parents[x])
            return self.parents[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if x == y:
            return

        if self.parents[x] > self.parents[y]:
            x, y = y, x

        self.parents[x] += self.parents[y]
        self.parents[y] = x

    def size(self, x):
        return -self.parents[self.find(x)]

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def members(self, x):
        root = self.find(x)
        return [i for i in range(self.n) if self.find(i) == root]

    def roots(self):
        return [i for i, x in enumerate(self.parents) if x < 0]

    def group_count(self):
        return len(self.roots())

    def all_group_members(self):
        return {r: self.members(r) for r in self.roots()}

    def __str__(self):
        return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots())
import sys
input=sys.stdin.readline
n,m,k = map(int,input().split())
ab = [list(map(int,input().split())) for i in range(m)]
cd = [list(map(int,input().split())) for i in range(k)]
num = [0]*(n+1)
g = [[] for i in range(n+1)]
uf = UnionFind(n+1)
for a,b in ab:
  g[a].append(b)
  g[b].append(a)
  uf.union(a,b)
for c,d in cd:
  if uf.same(c,d) == True:
    g[c].append(d)
    g[d].append(c)
for i in range(1,n+1):
  print(uf.size(i)-len(g[i])-1,end=" ")


### FIXED CODE ###

print((int(input())+1)//2)
<?php
//https://stackoverflow.com/questions/5506888/permutations-all-possible-sets-of-numbers

function pc_permute($items, $perms = array( )) {
    if (empty($items)) {
        // もう取り出すものがなければその時点の$permsが順列の一つなのでそのまま返却 
        $return = array($perms);
    } else {
        $return = array();
        // 並んでる数字を順番にみてく
        for ($i =  0; $i < count($items); $i++) {
            // 処理対象の配列と、組み合わせを保持してる変数を別変数にコピー
            // array_spliceなどは破壊的なメソッドなので退避しないと元配列が変更される
            $newitems = $items;
            $newperms = $perms;
            // インデックスが$iの値を$fooにとる。($newitemsからは削除される)
            list($foo) = array_splice($newitems, $i, 1);
            // 取り除いた値（$foo)を組み合わせの候補の先頭に持ってくる
            array_unshift($newperms, $foo);
            // 最終的に呼び出し元に返却する配列に追加する
            // 追加する配列は、一文字削ったあとの$newitems,
            // 現段階での組み合わせの$newpermsを引数に、再帰的に自分を呼び出した結果
            $return = array_merge($return, pc_permute($newitems, $newperms));
        }
    }
    return $return;
}


// ----------------------------------------------------
// こっから実際に解く
// ----------------------------------------------------

// 入力値の取得（int変換)
$N = intval(trim(fgets(STDIN)));
// 入力値の取得（配列化）
$P = explode(" ",fgets(STDIN));
$Q = explode(" ",fgets(STDIN));

// 順列の生成
$a = range(1,$N);
$perms = pc_permute($a);
sort($perms);

$p_index = -1;
$q_index = -1;

// 列挙した順列をfor文で確認していき、PとQの位置を確認する
for ($i=0; $i < count($perms); $i++){
  if ($perms[$i] == $P){
    $p_index = $i;
  }
  if ($perms[$i] == $Q){
    $q_index = $i;
  }
}

// 答えの計算
$ans = abs($p_index - $q_index);
echo $ans;

?>


### FIXED CODE ###

import itertools

def main():
    N = int(input())
    
    P = list(map(int, input().split()))
    Q = list(map(int, input().split()))
    
    combi = list(itertools.permutations(range(1, N+1)))
    
    pi = 0
    qi = 0
    for i in range(len(combi)):
        if list(combi[i]) == P:
            pi = i + 1
        if list(combi[i]) == Q:
            qi = i + 1
            
            
    print(abs(qi - pi))
    
main()
N = int(input())
A = map(int, input().split())
n,m = 1,0
if 1 not in A: print(-1)
else:
  for i in range(N):
    if A[i] == n: n += 1
    else: m += 1
  print(m)

### FIXED CODE ###

N = int(input())
A = list(map(int, input().split()))
n,m = 1,0
if 1 not in A: print(-1)
else:
  for i in range(N):
    if A[i] == n: n += 1
    else: m += 1
  print(m)
tmp = input().split(" ")
print("Yes") if tmp[0] == tmp[2] else print("No")

### FIXED CODE ###

tmp = list(input())
print("Yes") if tmp[0] == tmp[2] else print("No")
D,N=map(int,input().split())
if N==100:
  ((N+1)*(100**D)
else:
  print(N*(100**D)


### FIXED CODE ###

D,N=map(int,input().split())
if N==100:
  print((N+1)*(100**D))
else:
  print(N*(100**D))
n = input
l = map(int, input().split())
l = sorted(l)

ans = 0
for i in range(len(n)):
  a = l[2*i]
  b = l[2*i+1]
  ans =+ min(a,b)

print(ans)

### FIXED CODE ###

n = int(input())
l = map(int, input().split())
l = sorted(l)

ans = 0
for i in range(n):
    a = l[2 * i]
    b = l[2 * i + 1]
    ans = ans + min(a, b)

print(ans)
abc = input()
    abc.split(" ")
    print(abc[2] + " " + abc[0] + " " + abc[1])

### FIXED CODE ###

abc = input()
s = abc.split(" ")
print(s[2] + " " + s[0] + " " + s[1])
import sys
for e in sys.stdin:
    a, b, c, d, e, f = map(int, e.split())
    y=(c*d-a*f)/(b*d-a*e)
    x = (e*y-f) / -d
    print (round(x, 3)+' '+round(y, 3))


### FIXED CODE ###

import sys
for e in sys.stdin:
    a, b, c, d, e, f = map(int, e.split())
    y=(c*d-a*f)/(b*d-a*e)
    x = (c-b*y)/a
    #print (str(round(x, 3))+' '+str(round(y, 3)))#dont int+str
    print("%.3f %.3f"%(x,y))
N, M = map(int, input().split())
s = [list(map(int, input().split())) for i in range(M)]
s.sort(key=lambda x:x[1])

count=1
mae=s[0][1]
for i in range(1,N):
    if s[i][0]>=mae:
        count+=1
        mae=s[i][1]

print(count)

### FIXED CODE ###

N, M = map(int, input().split())
s = [list(map(int, input().split())) for i in range(M)]
s.sort(key=lambda x:x[1])

count=1
mae=s[0][1]
for i in range(1,M):
    if s[i][0]>=mae:
        count+=1
        mae=s[i][1]

print(count)
from heapq import heappush, heappop, heapify

N, K = map(int, input().split())
V = list(map(int, input().split()))

# N jewels in dequeue D
# at most K operations
# 1 <= N <= 50
# 1 <= K <= 100
# -10000000 <= Vi <= 10000000

# Operation A, B: Remove left or right
# Operation C, D: Add to left or right

S = 0
for take in range(K):
    for takeL in range(take + 1):
        for takeR in range(take - takeL + 1):
            hand = []
            for i in range(takeL):
                heappush(hand, V[i])
            for i in range(takeR):
                heappush(hand, V[N- i - 1])
            for i in range(K - take):
                if not hand:
                    break
                heappop(hand)
                s = sum(hand)
                S = max(s, S)
print(S)

### FIXED CODE ###

from heapq import heappush, heappop, heapify

N, K = map(int, input().split())
V = list(map(int, input().split()))

# N jewels in dequeue D
# at most K operations
# 1 <= N <= 50
# 1 <= K <= 100
# -10000000 <= Vi <= 10000000

# Operation A, B: Remove left or right
# Operation C, D: Add to left or right

S = 0
for take in range(min(N, K) + 1):
    for takeL in range(take + 1):
        for takeR in range(take - takeL + 1):
            hand = []
            for i in range(takeL):
                heappush(hand, V[i])
            for i in range(takeR):
                if N - i - 1 < takeL:
                    break
                heappush(hand, V[N- i - 1])
            S = max(sum(hand), S)
            for _ in range(K - take):
                if not hand or hand[0] >= 0:
                    break
                heappop(hand)
                S = max(sum(hand), S)
print(S)
def main():
    import sys
    input = sys.stdin.readline

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

    import math
    dp = [math.inf]*N

    dp[0] = 0
    step1, step2 = math.inf, math.inf

    for i in range(1, N):
        step1 = abs(H[i-1]-H[i]) + dp[i-1]
        if i >= 2:
            step2 = abs(H[i-2]-H[i]) + dp[i-2]
        step = min(step1, step2)

        dp[i] = min(dp[i], step)
    print(dp[-1])


if __name__ == "__main__":
    main()


### FIXED CODE ###

def main():
    import sys
    input = sys.stdin.readline

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

    inf = float("inf")
    dp = [inf]*N

    dp[0] = 0
    step1, step2 = inf, inf

    for i in range(1, N):
        step1 = abs(H[i-1]-H[i]) + dp[i-1]
        if i >= 2:
            step2 = abs(H[i-2]-H[i]) + dp[i-2]
        step = min(step1, step2)

        dp[i] = min(dp[i], step)
    print(dp[-1])


if __name__ == "__main__":
    main()
N, Y = map(int, input().split())

answer = '-1 -1 -1'
for x in range(N+1):
    for y in range(N+1):
        z = N - x - y
        if 10000*x + 5000*y + 1000*z == Y and z >= 0:
            answer = f'{x} {y} {z}'
            break
print(answer)


### FIXED CODE ###

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

answer = '-1 -1 -1'
for x in range(N+1):
    for y in range(N+1):
        z = N - x - y
        if 10000*x + 5000*y + 1000*z == Y and z >= 0:
            answer = str(x) + ' ' + str(y) + ' ' + str(z) 
            break
print(answer)
for(i=1;i<10;i++){
    for(j=1;j<10;j++){
	console.log("%dx%d=%d",i,j,i*j);
    }
}

### FIXED CODE ###

for i in xrange(81):print "{}x{}={}".format(i/9+1,i%9+1,(i/9+1)*(i%9+1))
K,S = [int(i) for i in input().split()]


ans = 0

for x in range(K+1):
    for y in range(K+1):
        if 0 <= S-x-y <=k:
            ans = ans + 1
print(ans)

### FIXED CODE ###

K, S = map(int, input().split())
ans = 0
for x in range(min(K,S)+1):
	for y in range(min(K,S)+1):
		if 0 <= S - x - y <= K:
			ans += 1
print(ans)
X=int(input())
  print(int(X**0.5)**2)

### FIXED CODE ###

N = int(input())
print(int(N**0.5)**2)
a=int(input())
p=3.141592
print("{0:.8f} {1:.8f}".format(a*a*p,a*2*p))


### FIXED CODE ###

import math
a=float(input())
print("{0:.9f} {1:.9f}".format(a*a*math.pi,a*2*math.pi))
import numpy as np
from sys import stdin
input = stdin.readline
N = int(input())
A = list(map(int, input().split()))
A = np.array(A)
number = np.zeros(N, dtype = int)
for i in range(N):
  number[i] = A.count(i + 1)
total = 0
for k in range(N):
  tmp = number[k]
  total += tmp * (tmp-1) // 2
for j in range(N):
  print(total - number[A[j]-1] + 1)


### FIXED CODE ###

import numpy as np
from sys import stdin
input = stdin.readline
N = int(input())
A = list(map(int, input().split()))
number = np.zeros(N, dtype = int)
total = 0

dic = {}
a = sorted(A)
now_key = a[0]
value = 1
dic[now_key] = 1
for i in range(1,N):
  if a[i] == now_key:
    value += 1
  else:
    dic[now_key] = value
    if value >= 2:
      total += value * (value-1) // 2
    now_key = a[i]
    value = 1
dic[now_key] = value
if value >= 2:
  total += value * (value-1)//2
for j in A:
  print(total - dic[j] + 1)
c,a,b = map(int,input().split())
area = c*a//2
print(ans)

### FIXED CODE ###

a,b,c=map(int,input().split())
print(a*b//2)
while True:
    H, W = [int(i) for i in input().split()]
    for h in range(h):
    if H == W == 0:
        break


        for w in range(w):
            print('#', end=' ')

        print()
    
    print()

### FIXED CODE ###

while True:
    H, W = [int(i) for i in input().split()]
    if H == W == 0:
        break

    for h in range(H):
        for w in range(W):
            print('#', end='')

        print()

    print()
S=list(map(str,input().split()))
print(join(S[::2]))


### FIXED CODE ###

S=input()
print(S[::2])
S=input()
T=input()
k=0
i=0
while S!=T	
	if S[i]==T[i]:
  	else:
      k+=1
    i+=1

print(k)

### FIXED CODE ###

S=input()
T=input()
k=0
for i in range(len(S)):
  if S[i]!=T[i]:
    k+=1
print(k)
N,K = map(int, input().split())
A = [int(i) for i in input().split()]
used = [0]
now_town = 0
flag = False

for i,_ in enumerate(range(K)):
    now_town = A[now_town]-1
    if now_town in used:
        break        
    used.append(now_town)
else:
    flag = True

roop_first = used.index(now_town)
ans_index = (K-roop_first)%(i-roop_first+1)

print(now_town+1 if flag else used[roop_first:][ans_index]+1)

### FIXED CODE ###

from collections import defaultdict

N,K = map(int, input().split())
A = [int(i) for i in input().split()]
used_dict = defaultdict(int)
used_dict[0] += 1
now_town = 0
flag = False

for i in range(min(N,K)):
    now_town = A[now_town]-1
    if used_dict[now_town]:
        used_dict[now_town] += 1
        break
    used_dict[now_town] += 1
else:
    flag = True

if not flag:
    now_town2 = 0
    cnt = 0
    while 1:
        if now_town2 == now_town:
            for _ in range((K-cnt)%(i-cnt+1)):
                now_town = A[now_town]-1
            break
        now_town2 = A[now_town2]-1
        cnt += 1
print(now_town+1)
N = int(input())
*A, = map(int, input().split())
B = []
for i in A:
  if i % 2 == 0:
    B.append(i)
C = 0
for l in B:
  if l % 5 == 1 or l % 3 == 0:
    C += C + 1

if C/len(B) ==1:
  print('APPROVED')
else:
  print('DENIED')

### FIXED CODE ###

N = int(input())
*A, = map(int, input().split())
B = []
C = 0
for i in A:
  if i % 2 == 0:
    B.append(i)
    if i % 5 == 0 or i % 3 == 0:
      C += 1
 
if C == len(B):
  print('APPROVED')
else:
  print('DENIED')
from itertools import product
from heapq import *

X,Y,Z,K,*f = map(int, open(0).read().split())
A = f[:X]
B = f[X:X+Y]
C = f[X+Y:]
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)
AB = [sum(x) * (-1) for x in product(A,B)]
heapify(AB)
AB_picked = []
for i in range(K):
    AB_picked.append(heappop(AB)*(-1))
ABC = [sum(x) * (-1) for x in product(AB_picked,C)]
heapify(ABC)
for i in range(K):
    print(heappop(ABC)*(-1))

### FIXED CODE ###

from itertools import product
from heapq import *

X,Y,Z,K,*f = map(int, open(0).read().split())
A = f[:X]
B = f[X:X+Y]
C = f[X+Y:]
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)
AB = [sum(x) * (-1) for x in product(A,B)]
heapify(AB)
AB_picked = []
for i in range(K):
    if AB:
        AB_picked.append(heappop(AB)*(-1))
    else:
        break
ABC = [sum(x) * (-1) for x in product(AB_picked,C)]
heapify(ABC)
for i in range(K):
    print(heappop(ABC)*(-1))
X = int(input())
while True:
  for i in range(1,N):
    if X % (i+1) == 0:
      break
    else:
      if i == N - 1:
        print(X)
        exit()
  X += 1
 


 
      
    

### FIXED CODE ###

X = int(input())
if X == 2:
    print(2)
    exit()
while True:
    N = int(X**0.5)
    for i in range(1,N):
        if X % (i+1) == 0:
            break
        else:
          if i == N - 1:
            print(X)
            exit()
    X += 1
import numpy as np
N = int(input())

furui = np.zeros(N+1, dtype=float)
for i in range(1, N+1):
    furui[i::i] = furui[i::i]+1

for i in range(1, N+1):
    furui[i] = furui[i]*i

print(int(furui.sum()))




### FIXED CODE ###

N = int(input())

furui = [1]*(N+1)
ans = 1
for i in range(2, N+1):
    k = i
    while k <= N:
        furui[k] += 1
        k += i
    ans += furui[i]*i

print(ans)
s=input()
ss=s.replace(7,8,1)
print(ss)

### FIXED CODE ###

s=input()
ss=s.replace("7","8",1)
print(ss)
a, b = int(input().split())
c = a + b
if c <= 24:
    print(c)
else:
    print(c - 24)

### FIXED CODE ###

a, b = map(int, input().split())
c = a + b
if c < 24:
    print(c)
else:
    print(c - 24)
a=int(input('a'))
b=int(input('b'))

if (a*b)%2 ==1:
	print('Odd')
else:
	print('Even')

### FIXED CODE ###

a,b=map(int,input().split())
if (a*b)%2 ==0:
  print('Even')
else:
  print('Odd')
k, n = map(int, input().split())
a = list(map(int, input().split()))

maxi = 0

for i in range(1, n):
    x = a[i] - a[i-1]

    maxi = max(maxi, x)

x = a[-1] - a[0]

if k - x < x:
    x = k - x

maxi = max(maxi, x)

print(k - maxi)

### FIXED CODE ###

n, x, y = map(int, input().split())
x -= 1
y -= 1

dists = [0] * (n-1)

for i in range(n):
    for j in range(i+1, n):
        d = min(
            abs(j-i),
            abs(i-x) + abs(y-j) + 1,
            abs(i-y) + abs(x-j) + 1
        )

        dists[d-1] += 1

print(*dists, sep='\n')
def dp(i, j):
    if i == j:
        return A[i]
    return max(A[i]-dp(i+1, j), A[j]-dp(i, j-1))


n = int(input())
*A, = map(int, input().split())
print(dp(0, n-1))


### FIXED CODE ###

n = int(input())
*A, = map(int, input().split())
DP = [[0 for j in range(n+1)] for i in range(n+1)]
for l in range(1, n+1):
    for i in range(n-l+1):
        DP[i][i+l] = max(A[i]-DP[i+1][i+l], A[i+l-1]-DP[i][i+l-1])
print(DP[0][n])
def check(x, y, flag):
	farm[x][y] = "$"
	if farm[x + 1][y] == flag : check(x + 1, y, flag)
	if farm[x - 1][y] == flag : check(x - 1, y, flag)
	if farm[x][y + 1] == flag : check(x, y + 1, flag)
	if farm[x][y - 1] == flag : check(x, y - 1, flag)

while True:
	h,w = map(int, raw_input().split())
	if h == 0 and w == 0 : break

	farm = []
	farm.append(list("$" * (h + 2)))
	for i in range(0, w):
		farm.append(list("$" + raw_input() + "$"))
	farm.append(list("$" * (h + 2)))
	
	count = 0
	for i in range(0, w):
		for j in range(0, h):
			if farm[i + 1][j + 1] != "$":
				check(i + 1, j + 1, farm[i + 1][j + 1])
				count += 1
				
	print count

### FIXED CODE ###

import sys
sys.setrecursionlimit(100000)

def check(x, y, flag):
	farm[x][y] = "$"
	if farm[x + 1][y] == flag : check(x + 1, y, flag)
	if farm[x - 1][y] == flag : check(x - 1, y, flag)
	if farm[x][y + 1] == flag : check(x, y + 1, flag)
	if farm[x][y - 1] == flag : check(x, y - 1, flag)
	return 1

while True:
	h,w = map(int, raw_input().split())
	if h == 0 and w == 0 : break

	farm = []
	farm.append(list("$" * (w + 2)))
	for i in range(0, h):
		farm.append(list("$" + raw_input() + "$"))
	farm.append(list("$" * (w + 2)))
	
	count = 0
	for i in range(0, h):
		for j in range(0, w):
			if farm[i + 1][j + 1] != "$":
				count += check(i + 1, j + 1, farm[i + 1][j + 1])
				
	print count
N = int(input())
Alist = list(map(int, input().split()))
abc = [0, 0, 0]
ans = 1
for i in range(N):
    A = Alist[i]
    ans = (ans * abc.count(A)) % (10**9 + 7)
    abc[abc.index(A)] += 1

print(ans)


### FIXED CODE ###

N = int(input())
Alist = list(map(int, input().split()))
nums = [0, 0, 0]
ans = 1
for i in range(N):
    try:
        A = Alist[i]
        ans = (ans * nums.count(A)) % (10**9 + 7)
        nums[nums.index(A)] += 1
    except:
        print(0)
        break
else:
    print(ans)