Harryxun/stf_run huggingface dataset:
def Kleene(a, k):
  if k==1:
    count = 0
    for i in range(len(a)-1):
      for j in range(i+1, len(a)):
        if a[i] > a[j]:
          count += 1
    return count
  
  else:
    a.sort()
    l = [ i for i in range(len(a)) ]
    for i in range(1, len(a)):
      if a[i] == a[i-1]:
        l[i] = l[i-1]
    count = sum(l) * (k-1)
    return ( Kleene(a, 1) + Kleene(a, k-1) + count ) % 1000000007

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

### FIXED CODE ###

n, k = map(int, input().split())
a = list(map(int, input().split()))
t, s = 0, 0

for i in range(n-1):
  for j in range(i+1, n):
    if a[i] > a[j]:
      t += 1
      
a.sort()
l = [ i for i in range(n) ]
for i in range(1, n):
  if a[i] == a[i-1]:
    l[i] = l[i-1]
s = sum(l)
    
print((k*t%1000000007 + s*k*(k-1)//2%1000000007)%1000000007)
print((N-1)/2 * N)

### FIXED CODE ###

N = int(input())
print(((N-1) * N)//2)
n,a,b = map(int,input().split())
ans = 0

for i in range(n+1):
    if a<= sum(list(map(int,list(str(i))) <=b
        ans += i
print(ans)

### FIXED CODE ###

n, a, b = map(int, input().split())
ans = 0
for i in range(n+1):
    if a <= sum(list(map(int, list(str(i))))) <= b:
        ans += i
print(ans)
L = input()
ans = (L//3)**3
print(ans)

### FIXED CODE ###

L = int(input())
ans = (L/3)**3
print(ans)
for i in range(1):
    print(input()[::-1])

### FIXED CODE ###

a = 1
while a:
    print(input()[::-1])
    a = 0
N = int(input())
A_list = input().split()
A_list_i = [int(s, 0) for s in A_list]
max_gcd = 1
min_gcd = [10000000000, -1]
for i in range(N-1):
    for j in range(i+1, N):
        if A_list_i[i] == A_list_i[j]:
            temp = A_list_i[i]
        elif A_list_i[i] > A_list_i[j]:
            temp = A_list_i[i] % A_list_i[j]
        else:
            temp = A_list_i[j] % A_list_i[i]
        if temp > max_gcd:
            max_gcd = temp
        if temp < min_gcd[0]:
            min_gcd[0] = temp
            if A_list_i[i] > A_list_i[j]:
                min_gcd[1] = i
            else:
                min_gcd[1] = j
A_list_i[min_gcd[1]] = max_gcd
temp = 0
max_gcd = 1
for i in range(N-1):
    for j in range(i+1, N):
        if A_list_i[i] == A_list_i[j]:
            temp = A_list_i[i]
        elif A_list_i[i] > A_list_i[j]:
            temp = A_list_i[i] % A_list_i[j]
        else:
            temp = A_list_i[j] % A_list_i[i]
        if temp > max_gcd:
            max_gcd = temp            
print('%d' % max_gcd)

### FIXED CODE ###

raw_input = input()
a, b, t = map(int, raw_input.split())
counter = (t+0.5)//a #クッキを焼く回数
number = b * counter #枚数
print('%d' % number)
N = input()
S = input()
char_list = list(S.split(" "))
result = "Three"
for i in range(N):
    if char_list[i] == "Y":
        result = "Four"
print(result)

### FIXED CODE ###

N = int(input())
S = input()
char_list = list(S.split(" "))
result = "Three"
for i in range(N):
    if char_list[i] == "Y":
        result = "Four"
print(result)
n = int(input())
x = list(map(int, input().split())

res = 0
r = round(sum(x)/len(x))
for i in x:
    res +=(i-p)**2
print(res)

### FIXED CODE ###

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

res = 0

r = round(sum(x)/len(x))
for i in x:
    res += (i-r)**2
print(res)
N=int(input())
A,B=map(int, input().split())
P=list(map(int, input().split())
ans=[0,0,0]
for i in P
       if i <=a:
        ans[0] +=1
       else i>b:
        ans[2] +=1
       else:
        ans[1]+=1
print(min(ans))

### FIXED CODE ###

n = int(input())
a,b = map(int,input().split())
l = list(map(int,input().split()))
c = [0]*3
for i in l:
    if i <= a:
        c[0] += 1
    elif i > b:
        c[2] += 1
    else:
        c[1] += 1
print(min(c))
# -*- coding:utf-8 -*-
import sys

def dfs(x, y, sym):
	tile[x][y] = "."
	for i in range(len(DX)):
		nx = x + DX[i]
		ny = y + DY[i]
		if 0<=nx and nx<N and 0<=ny and ny<M and tile[nx][ny] is sym:
			dfs(nx, ny, sym)

def solve():
	res = 0
	for i in range(N):
		for j in range(M):
			sym = tile[i][j]
			if tile[i][j] != ".":
				if tile[i][j] is sym:
					dfs(i, j, sym)
					res += 1
	print(res)

counter=0
flg=1
DX = [-1, 0, 1, 0]
DY = [0, -1, 0, 1]
sys.setrecursionlimit(10**7)
while True:
	line = input()
	counter += 1
	if flg is 1:
		nums = line.split(" ")
		N = int(nums[0])
		M = int(nums[1])
		tile = [[0 for i in range(N)] for j in range(M)]
		flg=0
	else:
		tile[counter-2] = list(line)
	if N is 0 and M is 0:
		break
	if counter-1 is M:
		solve()
		flg = 1
		counter = 0

### FIXED CODE ###

# -*- coding:utf-8 -*-
import sys
def dfs(x, y, sym):
	tile[x][y] = "."
	for i in range(len(DX)):
		nx = x + DX[i]
		ny = y + DY[i]
		if (0<=nx and nx<N and 0<=ny and ny<M and tile[nx][ny] is sym):
			dfs(nx, ny, sym)

def solve():
	res = 0
	for i in range(N):
		for j in range(M):
			sym = tile[i][j]
			if tile[i][j] != ".":
				if tile[i][j] is sym:
					dfs(i, j, sym)
					res += 1
	print(res)

counter=0
DX = [-1,0,1,0]
DY = [0,-1,0,1]
sys.setrecursionlimit(10**7)
while True:
	line = input()
	if " " in line:
		nums = line.split(" ")
		N = int(nums[0])
		M = int(nums[1])
		tile = [[0 for i in range(M)] for j in range(N)]
	else:
		tile[counter-1] = list(line)
	if N is 0 and M is 0:
		break
	counter += 1
	if counter-1 is N:
		solve()
		counter = 0
s = list(input())
n = len(s)
S = [int(s[i]) for i in range(n)]
count = 0

def f(X):
  p = 0
  if len(X) >= 4:
    for i in range(0,len(X)-4):
      if [X[i],X[i+1],X[i+2],X[i+3]] == [1,1,0,0] or [1,0,1,0] or [0,1,0,1]or[0,0,1,1]):
        X = X[0:i+2] + X[i+3:len(X)+1]
        return(X)
      

### FIXED CODE ###

s = input()
c = max(s.count("1") - s.count("0"),s.count("0") - s.count("1"))

if len(s) == 1:
	print(0)
else:
	print(len(s)-c)
n=int(input())
s=list(input())
nw = 0
ans = 0
for i in s:
  if i='I':
    nw+=1
  else:
    nw-=1
  ans = max(ans,nw)
print(ans)
  

### FIXED CODE ###

n=int(input())
s=list(input())
nw = 0
ans = 0
for i in s:
  if i=='I':
    nw+=1
  else:
    nw-=1
  ans = max(ans,nw)
print(ans)
from math import floor
a, b = input().split()
a = int(a)
b = float(b)
print(int(floor(a*b))

### FIXED CODE ###

a = input().split()
b = int(a[0])
c = float(a[1])
c = round(c*100)

ans = b*c // 100
print(int(ans))
n = str(input())
m = n[2]
if m == '2' or m == '4' or m == '5' or m == '7' or m == '9':
    print('hon')
elif m == '0' or m == '1' or m == '6' or m == '8':
    print('pon')
else:
    print('bon')

### FIXED CODE ###

n = str(input())
m = n[-1]
if m == '2' or m == '4' or m == '5' or m == '7' or m == '9':
    print('hon')
elif m == '0' or m == '1' or m == '6' or m == '8':
    print('pon')
else:
    print('bon')
n = int(input())
a = []
for i in range(n):
  a.append(int(input()))

import bisect

color = []
color.append(a.pop(0))
color_count =0 
for i, ai in enumerate(a): 
    index = bisect.bisect_left(color, ai)
    if index > 0:
        color[index -1] = ai
    else:
        color.insert(0, ai)
print(len(color))

### FIXED CODE ###

r = int(input())
print(3*r*r)
n=int(input())
A=sorted(list(map(int,input().split()),reverse=True)
print(sum(a[::2])-sum(a[1::2]))

### FIXED CODE ###

n=int(input())
a = sorted(list(map(int,input().split())),reverse=True)
print(sum(a[::2])-sum(a[1::2]))
n, m = map(int,input().split())
M = [[0 for _ in range(n)] for i in range(n)]
for i in range(m):
    a, b = map(int,input().split())
    M[a][b] = 1
    
cnt = 0   
for i in range(n-1):
    if all(M[i][j] == 0 for j in range(1+i, n)):
        cnt += 1

print(cnt)

### FIXED CODE ###

from collections import deque
n,m = map(int,input().split())
g = [[] for _ in range(n)]
for i in range(m):
    a, b = map(int,input().split())
    g[a-1].append(b-1)
    g[b-1].append(a-1)

dist = [-1]*n
q = deque([])
cnt = 0

#連結成分のカウント

for i in range(n):
    if dist[i] != -1:
        continue
    dist[i] = 0
    q.append(i)
    while q:
        v = q.pop()
        s = g[v]
        for j in s:
            if dist[j] != -1:
                continue
            dist[j] = 0
            q.append(j)
    cnt += 1

print(cnt - 1)
N,M=map(int,input().split())
foods=[0]*M

for i in range(N):
  KA=list(map(int,input().split())
  for a in KA[1: ]:
    foods[a-1]+=1

cnt=0
for j in foods:
  if j==N:
    cnt+=1

print(cnt)

### FIXED CODE ###

N,M = map(int,input().split())
foods = [0]*M
 
for i in range(N):
  KA = list(map(int,input().split()))
  
  for a in KA[1:]:
    foods[a-1] += 1
  
cnt = 0
for j in foods:
  if j == N:
    cnt += 1
    
print(cnt)
def f(u, i, d, t):
    z = t[u]
    c = 1
    for v in z:
        if c == i:
            c += 1
        d[u].update({v: c})
        f(v, c, d, t)
        c += 1


def main():
    from collections import deque, defaultdict
    n = int(input())
    t = [[] for _ in range(n + 1)]
    m = []

    for _ in range(n - 1):
        i, j = map(int, input().split())
        i, j = min(i, j), max(i, j)
        t[i].append(j)
        m.append([i, j])
    d = defaultdict(dict)

    f(1, len(t[1]) + 1, d, t)

    ans = ''
    if t.count([]) == n:
        ans += str(n - 1) + '\n'
    else:
        ans += str(max(len(i) for i in t) + 1) + '\n'

    for (u, v) in m:
        ans += str(d[u][v]) + '\n'

    print(ans)


if __name__ == '__main__':
    main()


### FIXED CODE ###

def f(u, i, d, t, vis):
    if vis[u]:
        return
    vis[u] = True
    z = t[u]

    c = 1
    for v in z:
        if vis[v]:
            continue
        if c == i:
            c += 1
        d[u].update({v: c})
        f(v, c, d, t, vis)
        c += 1


def main():
    from collections import defaultdict
    import sys
    sys.setrecursionlimit(100000)
    n = int(input())
    t = [[] for _ in range(n + 1)]
    m = []

    for _ in range(n - 1):
        i, j = map(int, input().split())
        t[i].append(j)
        t[j].append(i)
        m.append([i, j])
    d = defaultdict(dict)
    vis = [False for _ in range(n + 1)]
    f(1, len(t[1]) + 1, d, t, vis)

    ans = ''
    if t.count([]) == n:
        ans += str(n - 1) + '\n'
    else:
        ans += str(max(len(i) for i in t)) + '\n'

    for (u, v) in m:
        ans += str(d[u][v]) + '\n'

    print(ans)


if __name__ == '__main__':
    main()
n,p=map(int,input().split())
if n==1:
	print(p)
	exit()
ans=1
for i in range(2,int(p**(1/n))+2):
	while p%(i**n)==0:
		if p%(i**n)==0:
			ans*=i
			p//=(i**n)
print(ans)


### FIXED CODE ###


n,p=map(int,input().split())
ans=[]
for i in range(2,int(p**0.5)+1):
	cnt=0
	while p%i==0:
		p//=i
		cnt+=1
	if cnt>0:
		ans.append([i,cnt])
ans.append([p,1])
ret=1
for i in range(len(ans)):
	ret*=pow(ans[i][0],(ans[i][1]//n))
print(ret)
K = int(input())

snuke = [1,2,3,4,5,6,7,8,9,19,29,39,49,59,69,79,89,99,199,299,399,499,599,699,799,899,999]

for n in range(3,16):
    for k in range(1,11):
        snuke.append(10**(n-1)*(10+k)-1)
    for k in range(2,10):
        snuke.append((k+1)*10**n-1)

for k in range(K):
    print(snuke[k])

### FIXED CODE ###

def snk_cal(i):
    snk = i
    i = str(i)
    q = 0
    for j in range(len(i)):
        q += int(i[j])
    snk /= q
    return snk

K = int(input())
if K <= 9:
    for i in range(K):
        print(i+1)
else:
    for i in range(9):
        print(i+1)
    K -= 9
    snk = 9
    while K > 0:
        res = snk+1
        d = len(str(res))
        l = []
        for i in range(d):
            n = int(str(res)[:-i-1]+'9'*(i+1))
            l.append(snk_cal(n))
        i = l.index(min(l))
        snk = int(str(res)[:-i-1]+'9'*(i+1))
        print(snk)
        K -= 1
import itertools
from collections import defaultdict
import collections
import sys
sys.setrecursionlimit(200000)
mod = 1000000007

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

tf = [False] * (n + 1)
tf[1] = True
ss = [1]
cnt = 0
while cnt < k:
    if len(ss) != 1 and tf[a[ss[cnt] - 1]]:
        d = a[ss[cnt] - 1]
        break
    tf[a[ss[cnt] - 1]] = True
    ss.append(a[ss[cnt] - 1])
    cnt += 1


sss = ss.index(d)
print(ss[sss+(k -len(ss)) % (len(ss) - sss)])
    # print(ss.index(d))
    # print(ss[k % (len(ss) - ss.index(d))])

### FIXED CODE ###

import itertools
from collections import defaultdict
import collections
import sys
sys.setrecursionlimit(200000)
mod = 1000000007

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

tf = [False] * (n + 1)
tf[1] = True
ss = [1]
cnt = 0
while cnt < max(k,n ** 2):
    if len(ss) != 1 and tf[a[ss[cnt] - 1]]:
        d = a[ss[cnt] - 1]
        break
    tf[a[ss[cnt] - 1]] = True
    ss.append(a[ss[cnt] - 1])
    cnt += 1

if len(ss) > k:
    print(ss[k])
else:
    sss = ss.index(d)
    print(ss[sss+(k -len(ss)) % (len(ss) - sss)])
    # print(ss.index(d))
    # print(ss[k % (len(ss) - ss.index(d))])
def main():
    l, r = map(int, input().split(' '))
    if (r - l) >= 2019:
        ans = 0
    else:
        while l > 2019:
            l %= 2019
        while r > 2019:
            r %= 2019
            ans = 0 if l >= r else l * (l + 1)
    print(ans)


if __name__ == '__main__':
    main()


### FIXED CODE ###

def main():
  l, r = map(int, input().split(' '))
  if r - l >= 2019:
    print(0)
  else:
    ans = l * r
    i = l
    while i < r:
      j = i + 1
      while j <= r:
        ij = i * j
        if mod(ij) < ans:
          ans = mod(ij)
        j += 1
      i += 1
    print(ans)


def mod(n):
  if n < 2019:
    return n
  else:
    return(n % 2019)


if __name__ == '__main__':
  main()
def pickup(S,ans):
    l = len(S)
    if l<2:
        return ans
    for i in range(l-1):
        if S[i] != S[i+1]:
            S.pop(i)
            S.pop(i)
            check_dif = True
            ans += pickup(S,ans)
            break
    if check_dif:
        ans+=2
    return ans   
S=input()
l = len(S)
S_list = [S[i] for i in range(l)]
ans =0
print(pickup(S_list,ans))

### FIXED CODE ###

S=input()
num_one=S.count('1')
num_zero=S.count('0')
ans = 2*min(num_one,num_zero)
print(ans)
X,Y=map(int,input().split())
d=Y-X
k= Y // X
if k <= 1:
  print(1)
  exit(0)
count=0
while(1):
  if  <= 2**count:
    break
  else:
    count+=1
print(count+1)


### FIXED CODE ###

X,Y=map(int,input().split())
d=Y-X
k= Y // X
if k <= 1:
  print(1)
  exit(0)
count=1
while(1):
  if k < 2**count:
    break
  elif k ==2**count:
    count+=1
    break
  else:
    count+=1
print(count)
a,b = [int i for i in input().split()]
if a <= 8 and b <= 8:
    print("Yay!")
else:
    print(":(")

### FIXED CODE ###

a,b = [int(i) for i in input().split()]
if a <= 8 and b <= 8:
    print("Yay!")
else:
    print(":(")
match_num=[0,2,5,5,4,5,6,3,7,6]
N,M=map(int, input().split())
nums=sorted(list(map(int, input().split())),reverse=True)
INF=1000000
#max桁数
dp = [-INF for _ in range(N+1)]
dp[0]=0
usables=[]
for n in nums:
  usables.append(match_num[n])

for i in range(min(usables), N+1):
  tmp=[]
  for u in usables:
    tmp.append(dp[i-u])
  
  dp[i]=max(tmp)+1

remained_maches=N

ans=''  
for i in range(dp[N]):
  for j in range(M):
    if dp[remained_maches]-1==dp[remained_maches-usables[j]]:
      ans+=str(nums[j])
      remained_maches-=usables[j]
      break
      
print(ans)

### FIXED CODE ###

match_num=[0,2,5,5,4,5,6,3,7,6]
N,M=map(int, input().split())
nums=sorted(list(map(int, input().split())),reverse=True)
INF=1000000
#max桁数
dp = [-INF for _ in range(N+1)]
dp[0]=0
usables=[]
for n in nums:
  usables.append(match_num[n])

for i in range(min(usables), N+1):
  tmp=[]
  for u in usables:
    if (i-u)>=0:
      tmp.append(dp[i-u])
  
  dp[i]=max(tmp)+1

remained_maches=N

ans=''  
for i in range(dp[N]):
  for j in range(M):
    if (remained_maches-usables[j])>=0:
      if dp[remained_maches]-1==dp[remained_maches-usables[j]]:
        ans+=str(nums[j])
        remained_maches-=usables[j]
        break
        
print(ans)
N,C=map(int, input().split())
D=[tuple(map(int, input().split())) for _ in range(C)]
c = [[0 for _ in range(3)] for _ in range(C)]
for j in range(N):
    i=0
    for v in map(int, input().split()):
        c[(i+j)%3][v-1] += 1
        i += 1

ans = float("inf")
for i in range(C):
    for j in range(C):
        if i!=j:
            for k in range(C):
                if i!=k and j!=k:
                    tmp = 0
                    for l in range(C):
                        tmp+=D[l][i]*c[0][l]
                    for l in range(C):
                        tmp+=D[l][j]*c[1][l]
                    for l in range(C):
                        tmp+=D[l][k]*c[2][l]
                    if tmp<ans:
                        ans=tmp

print(ans)

### FIXED CODE ###

N,C=map(int, input().split())
D=[tuple(map(int, input().split())) for _ in range(C)]
c = [[0 for i in range(C)] for j in range(3)]
for j in range(N):
    i=0
    for v in list(map(int, input().split())):
        c[(i+j)%3][v-1] += 1
        i += 1

ans = float("inf")
for i in range(C):
    for j in range(C):
        if i!=j:
            for k in range(C):
                if i!=k and j!=k:
                    tmp = 0
                    for l in range(C):
                        tmp+=D[l][i]*c[0][l]
                    for l in range(C):
                        tmp+=D[l][j]*c[1][l]
                    for l in range(C):
                        tmp+=D[l][k]*c[2][l]
                    if tmp<ans:
                        ans=tmp

print(ans)
#整数Nを得る
N, K = map(int,input().split())
mod = 10**9 +7
Ans = 1

for i in range(1,K+1):
    if i == 1:
        Ans = N - K + 1
        print(Ans)
    else:
        Ans = 1
        a = N - K + 1
        for j in range(1, i +1):
            Ans = Ans * a / j
            a = a-1
        c = 1
        for j in range(1,i):
            c = c * (K - j)/j

        Ans = int(Ans * c % mod)
        print(Ans)


### FIXED CODE ###

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
N = 10**4
g1 = [1, 1]
g2 = [1, 1]
inverse = [0, 1]

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 )


N, K = map(int, input().split())
R = N-K

for i in range(1, K+1):
    if i > R+1:
        print(0)
    else:
        ans = cmb(R+1, i, mod) * cmb(K-1, i-1, mod) % mod
        print(ans)
import sys
import numpy as np

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    md = 10 ** 9 + 7
    n, k = MI()
    aa = LLI(n)
    aa = np.ndarray(aa, dtype="i8")
    ans = np.eye(n, dtype="i8")
    while k:
        if k & 1:
            ans = np.dot(ans, aa)
            ans %= md
        aa = np.dot(aa, aa)
        aa %= md
        k >>= 1
    # print(ans)
    print(np.sum(ans) % md)

main()


### FIXED CODE ###

import sys

input = sys.stdin.readline


def dot(a, b):
    c = [[0] * n for _ in range(n)]
    for i, ai in enumerate(a):
        for j, bj in enumerate(zip(*b)):
            c[i][j] = sum(ak * bk for ak, bk in zip(ai, bj)) % md
    return c


def pwr(a, k):
    c = None
    while c == None:
        if k & 1:
            c = a
        a = dot(a, a)
        k >>= 1

    while k > 0:
        if k & 1:
            c = dot(a, c)
        a = dot(a, a)
        k >>= 1
    return c


md = 10 ** 9 + 7
n, k = map(int, input().split())
a = [list(map(int, input().split())) for _ in range(n)]
print(sum([sum(pk) % md for pk in pwr(a, k)]) % md)
S = list(input())
Q = int(input())
 
r = False
for i in range(Q):
    x = input().split()
    
    if x[0] == "1":
        r = not r
        
    else:
        if x[1] == "1":
            if r == False :
                S.insert(0, x[2])
            else:
                S.append(x[2])
        else:
            if r == True :
                S.insert(0, x[2])
            else:
                S.append(x[2])
        
if r:
    print("".join(S[::-1]))
else:
    print("".join(S))
S = list(input())
Q = int(input())

r = False
for i in range(Q):
    x = input().split()
    
    if x[0] == "1":
        r = not r
        
    else:
        if x[1] == "1":
            if r == False :
                S.insert(0, x[2])
            else:
                S.append(x[2])
        else:
            if r == True :
                S.insert(0, x[2])
            else:
                S.append(x[2])
        
if r:
    print("".join(S[::-1]))
else:
    print("".join(S))

### FIXED CODE ###

from collections import deque
S = list(input())
Q = int(input())

day = deque(S)

r = False
for i in range(Q):
    x = input().split()
    
    if x[0] == "1":
        r = not r
        
    else:
        if x[1] == "1":
            if r == False :
                day.appendleft(x[2])
            else:
                day.append(x[2])
        else:
            if r == True :
                day.appendleft(x[2])
            else:
                day.append(x[2])
                
day = list(day)
        
if r:
    print("".join(day[::-1]))
else:
    print("".join(day))
k,x = map(int,input().split())

print(" ".join(list(range(x-k+1,x+k-1))))

### FIXED CODE ###

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

print(" ".join(list(map(str,range(b-a+1,b+a)))))
from collections import deque
S=deque(input())
Q=int(input())
for i in range(Q):
  N=list(input().split())
  if N[0]=="1":
    S.reverse()
  elif N[1]=="1":#先頭にC1
    S.appendleft(N[2])
  else:#末尾にC1
    S.append(N[2])
S="".join(S)
print(S)

### FIXED CODE ###

N=input()
if N[0]==N[1] and N[0]==N[2]:
  print("No")
else:
  print("Yes")
N, K = list(map(int, input().split()))
a_set = set()
for k in range(K):
    d = int(input())
    A = list(map(int, input().split()))
    a_set |= set(A)
 
people = a_set
 
print(N - len(people))

### FIXED CODE ###

N = input()
print('ABC' if N == 'ARC' else 'ARC')
n,m = map(int, input().split())

for i in range(m):
  s = input()
  print(s)
  print(s)

### FIXED CODE ###

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

for i in range(n):
  s = input()
  print(s)
  print(s)
mod = 10**9+7

def f(n,k,p):
    n1, k = n+1, min(k, n-k)
    numer = denom = 1
    for i in range(1,k+1):
        numer = numer*(n1-i)
        denom = denom*i
    return numer*pow(denom,p-2,p)%p

r1,c1,r2,c2 = map(int,input().split(" "))
ans = f(r2+c2+2,c2+1,mod)-g(r2+c1+1,c1,mod)-g(r1+c2+1,c2+1,mod)+g(r1+c1,c1,mod)
print(ans%mod)

### FIXED CODE ###

mod = 10**9+7

f = [1]*(2*10**6+5)
f[0] = 1
for i in range(1,2*10**6+4):
    f[i] = f[i-1]*i%mod

def inv(i):
    return pow(f[i],mod-2,mod)

def g(x,y):
    return f[x+y]*inv(x)*inv(y)%mod

r1,c1,r2,c2 = map(int,input().split(" "))
ans = g(r2+1,c2+1)-g(r2+1,c1)-g(r1,c2+1)+g(r1,c1)
print(ans%mod)
x, y = map(int,input().split())
if x<y:
  print("unsafe")
else:
  print("safe')

### FIXED CODE ###

s, w = map(int,input().split())
if w>=s:
  print("unsafe")
else:
  print("safe")