Harryxun/stf_run huggingface dataset:
def main():
    L, R = map(int, input().split())
    start = time.time()
    if R // 2019 > L // 2019:
        print(0)
        return
    retval = 2019
    for i in range(L, R):
        for j in range(i+1, R+1):
            retval = min(retval, (i % 2019 * j % 2019) % 2019)
            if retval == 0:
                print(0)
                return
            
    print(retval)
    return
    
if __name__ == '__main__':
    main()

### FIXED CODE ###

def main():
    L, R = map(int, input().split())
    if R // 2019 > L // 2019:
        print(0)
        return
    retval = 2019
    for i in range(L, R):
        for j in range(i+1, R+1):
            retval = min(retval, (i % 2019 * j % 2019) % 2019)
    print(retval)
    return
    
if __name__ == '__main__':
    main()
D = [map(int(),input().split())]
 
if D[2] > D[0] + D[1]:
  print(No)
else:
  print(Yes)

### FIXED CODE ###

D = list(map(int,input().split()))

if D[2] > D[0] + D[1]:
  print("No")
else:
  print("Yes")
a = int(input())
b = int(input())

print(a*b 2*(a+b))


### FIXED CODE ###

a,b = map(int,input().split())
print(a * b,(a + b) * 2)
import sys
from collections import deque, defaultdict
import copy
import bisect
input=sys.stdin.readline
sys.setrecursionlimit(10 ** 9)

N = int(input())
A = []
for i in range(N):
	A.append(int(input()))

B = []
min = -10000000000
for i in range(N):
	if min <= -A[i]:
		min = -A[i]
		B.append(-A[i])
	else:
		loc = bisect.bisect_right(B, -A[i])
		B[loc] = -A[i]

print(len(B))


### FIXED CODE ###


import sys
from collections import deque, defaultdict
import copy
import bisect
input=sys.stdin.readline
sys.setrecursionlimit(10 ** 9)

N = int(input())
A = []
for i in range(N):
	A.append(int(input()))

B = []
min = -10000000000
for i in range(N):
	loc = bisect.bisect_right(B, -A[i])
	if loc == len(B):
		B.append(-A[i])
	else:
		B[loc] = -A[i]

print(len(B))
print(int(sqrt(int(input())))^2)

### FIXED CODE ###

import math
print(int(math.sqrt(int(input())))**2)
import sys
sys.setrecursionlimit(1500)

def f(x, y):
    if x == 0:
        return 0
    if x == y:
        return x
    x, y = min(x, y), max(x, y)
    return 2 * x + f(x, y - x)

N, X = list(map(int, input().split()))
print(f(X, N-X) + N)


### FIXED CODE ###

import sys
sys.setrecursionlimit(1500)

def f(x, y):
    if x == 0:
        return 0
    if y % x == 0:
        return 2 * (y // x) * x - x
    return 2 * (y // x) * x + f(y % x, x)

N, X = list(map(int, input().split()))
print(f(X, N-X) + N)
# imos法
# 長さNの1次元配列において、「ある連続する区間に、ある数vを足す」という操作をK回繰り返した結果を高速で求める
import numpy as np
# 初期入力
import sys
input = sys.stdin.readline
N,K = (int(i) for i in input().split())
A = list(map(int, input().split()))


l =0
r =N
cumulative_sum =[0]*N
#操作数が電球の数より多いとき
if N <=K:
    B=[N]*N
# imos法
else:
    for j in range(K):
        B =[0]*(N+1)
        for i in range(N):
            index =A[i]
            if i-index <0:
                l=0
            else:
                l =i -index
            if i +index >N:
                r =N 
            else:
                r =i +index +1
            B[l] +=1 
            B[r] -=1
        #累積和(imos法) 
        cumulative_sum[0] =B[0]       
        for i in range(1,N):
            cumulative_sum[i] =cumulative_sum[i-1] +B[i]

        A =cumulative_sum
        if sum(A) ==N*N:
            print(*A)
            sys.exit(0)
        cumulative_sum =[0]*N
    
print(*A)

### FIXED CODE ###

# imos法
# 長さNの1次元配列において、「ある連続する区間に、ある数vを足す」という操作をK回繰り返した結果を高速で求める
# 
    
# 初期入力
    
import sys
input = sys.stdin.readline
N,K = (int(i) for i in input().split())
A = list(map(int, input().split()))
    
    
l =0
r =N
cumulative_sum =[0]*N
#操作数が電球の数より多いとき
if N <=K:
    A=[N]*N
# imos法
else:
    for j in range(K):
        B =[0]*(N+1)
        for i in range(N):
            index =A[i]
            if i-index <0:
                l=0
            else:
                l =i -index
            if i +index +1 >=N:
                r =N 
            else:
                r =i +index +1
            B[l] +=1 
            B[r] -=1
        #累積和(imos法) 
        from itertools import accumulate
        del B[-1]
        A =list(accumulate(B))
        if sum(A) ==N*N:
            print(*A)
            sys.exit(0)
    
print(*A)
a = x^3

print(a)


### FIXED CODE ###

number = int(input())
print(number**3)
s=set(input().split())
a='abcdefghijklmnopqrstuvwxyz'
b=set()
for i in range(26):
    b.append(a[i])
if s==b:
    print('None')
else:
    print(b-s)


### FIXED CODE ###

s=set(list(input()))
a=set(list('abcdefghijklmnopqrstuvwxyz'))

if s==a:
    print('None')
else:
    b=sorted(list(a-s))
    print(str(b[0]))
from collections import defaultdict
import sys
input = sys.stdin.readline

N, M = [int(item) for item in input().split()]
A = [int(item) for item in input().split()]
A.sort()

new_dict = defaultdict(lambda: 0)
for i in range(M):
    b, c = [int(item) for item in input().split()]
    new_dict[c] += b
new_dict = sorted(new_dict.items(), key=lambda x: -x[0])

new_list = []
i = 0
for k, v in new_dict:
    new_list.extend([k] * v)
    i += v
    if i >= N:
        break
new_list = new_list[:N]

n = min(N, len(new_list))
for i in range(n):
    if A[i] >= new_list[i]:
        break
    A[i] = new_list[i]

print(sum(A))


### FIXED CODE ###

from collections import defaultdict
import sys
input = sys.stdin.readline

N, M = [int(item) for item in input().split()]
A = [int(item) for item in input().split()]
A.sort()

new_dict = defaultdict(lambda: 0)
for i in range(M):
    b, c = [int(item) for item in input().split()]
    new_dict[c] += b
new_dict = sorted(new_dict.items(), key=lambda x: -x[0])

new_list = []
for k, v in new_dict:
    if v > N:
        v = N
    new_list += [k] * v
    if len(new_list) >= N:
        break

new_list = new_list[:N]

#####

n = min(N, len(new_list))
for i in range(n):
    if A[i] >= new_list[i]:
        break
    A[i] = new_list[i]

print(sum(A))
L, N = map(int,input().split())
S = [input() for i in range(N)]

S.sort()

A=''.join(S)

print(str(A))

### FIXED CODE ###

N, L = map(int,input().split())
S = [input() for i in range(N)]

S.sort()


print("".join(S))
#!/usr/bin/env python3
# encoding:utf-8
import copy
import random
import bisect #bisect_left　これで二部探索の大小検索が行える
import fractions #最小公倍数などはこっち
import math
import sys
import collections
from decimal import Decimal # 10進数で考慮できる

mod = 10**9+7
sys.setrecursionlimit(mod) # 再帰回数上限はでdefault1000

d = collections.deque()
def LI(): return list(map(int, sys.stdin.readline().split()))

N = int(input())
xyh = []
for i in range(N):
    x, y, h = LI()
    xyh.append([x, y, h])


"""

C_x C_y H

XYの高度はmax(H - abs(X - C_x) - abs(Y - C_y), 0)
"""

ans = 0
for c_x in range(101):
    for c_y in range(101):
        H = -1
        for i, (x, y, h) in enumerate(xyh):
            if H == -1 and h != 0:
                H = h + abs(x - c_x) + abs(y - c_y)
            if H != h + abs(x - c_x) + abs(y - c_y):
                break
        else:
            ans = (c_x, c_y, H)
    
X, Y, H = ans
print(X, Y, H)



### FIXED CODE ###

#!/usr/bin/env python3
# encoding:utf-8
import copy
import random
import bisect #bisect_left　これで二部探索の大小検索が行える
import fractions #最小公倍数などはこっち
import math
import sys
import collections
from decimal import Decimal # 10進数で考慮できる

mod = 10**9+7
sys.setrecursionlimit(mod) # 再帰回数上限はでdefault1000

d = collections.deque()
def LI(): return list(map(int, sys.stdin.readline().split()))

N = int(input())
xyh = []
for i in range(N):
    x, y, h = LI()
    xyh.append([x, y, h])


"""

C_x C_y H

XYの高度はmax(H - abs(X - C_x) - abs(Y - C_y), 0)
"""
xyh = sorted(xyh, key=lambda xyh: xyh[2], reverse=True)

# print(xyh)
ans = (0,0,0)
for c_x in range(101):
    for c_y in range(101):
        H = 0
        flag = True
        for i, (x, y, h) in enumerate(xyh):
            if i == 0:
                H = h + abs(x - c_x) + abs(y - c_y)
            if h != max(H - abs(x - c_x) - abs(y - c_y), 0):
            # if H != max(h + abs(x - c_x) + abs(y - c_y), 0):
                flag = False
        if flag:
            ans = (c_x, c_y, H)
    
X, Y, H = ans
print(X, Y, H)
import math
n = int(input())
li = list(map(int,input().split()))
gcd1 = 0
gcd1 = math.gcd(li[0],li[1])
for i in range(2,n):
    gcd1 = math.gcd(gcd1,li[i])
print(gcd1)

### FIXED CODE ###

import fractions
n = int(input())
li = list(map(int,input().split()))
gcd1 = 0
gcd1 = fractions.gcd(li[0],li[1])
for i in range(2,n):
    gcd1 = fractions.gcd(gcd1,li[i])
print(gcd1)
ss=input()
if ss[0] == ss[1] ==s[2] == "R":
  print(3)
elif ss[0] == s[1] == "R" or ss[1]==ss[2] == "R" or ss[2] == ss[0] == "R"
  print(2)
elif "R" in ss:
  print(1)
else:
  print(0)


### FIXED CODE ###

ss=input()
if ss[0] == ss[1] ==ss[2] == "R":
  print(3)
elif ss[0] == ss[1] == "R" or ss[1]==ss[2] == "R":
  print(2)
elif "R" in ss:
  print(1)
else:
  print(0)
[a,b,c]=list(map(int,input().split())
if a<b<c
  print("true")

### FIXED CODE ###

[a,b,c]=list(map(int,input().split()))
if a<=c<=b:
  print("Yes")
else:
  print("No")
from sys import stdin
import numpy as np

n, m = [int(x) for x in stdin.readline().rstrip().split()]
a = np.asarray([[int(x) for x in stdin.readline().rstrip().split()] for _ in range(n)])
b = np.asarray([[int(stdin.readline().rstrip())] for _ in range(m)])
c = a.dot(b)
for i in range(n):
    print(*c[i])


### FIXED CODE ###

from sys import stdin

n, m = [int(x) for x in stdin.readline().rstrip().split()]
a = [[int(x) for x in stdin.readline().rstrip().split()] for _ in range(n)]
b = [[int(stdin.readline().rstrip())] for _ in range(m)]
c = [[0] for _ in range(n)]
for i in range(n):
    for j in range(m):
    	c[i][0] += (a[i][j]*b[j][0])

for i in range(n):
    print(*c[i])
import sys
sys.setrecursionlimit(10**8)

M = 10**9 + 7
K = int(input())
D = int(input())

dp = [[None] * 100 for _ in range(10**5 + 1)]
def f(k, i):
    if dp[i][k] is not None:
        return dp[i][k]

    if i == 0:
        r = (k % D) == 0
        dp[i][k] = r
        return r
    r = sum(f((k + x) % D, i - 1) for x in range(0, 10)) % M
    dp[i][k] = r
    return r

sk = str(K)
dig = len(sk)
answer = 0
s = sum(map(int, list(sk)))
for j in range(int(sk[-1]) + 1):
    if (s - j) % D == 0:
        answer += 1

if dig > 1:
    s -= int(sk[-1])
    for i in range(dig - 1, 1, -1):
        if sk[i - 1] == "0":
            continue
        for j in range(int(sk[i - 1])):
            answer += f(s - 1 - j, dig - i)
        s -= int(sk[i - 1])

    for k in range(1, int(sk[0])):
        answer += f(k, dig - 1)

    if dig > 1: # 先頭0固定
        for k in range(10):
            answer += f(k, dig - 2)


print((answer - 1) % M)


### FIXED CODE ###

string = input()
d = int(input())

nums = [int(v) for v in string]
length = len(string) - 1
k = int(string)

M = 10**9 + 7
def mod(v):
    if v >= M:
        return v % M
    return v

dp = [[[None] * 2 for _ in range(d)] for _ in range(length + 2)]
def dfs(i=0, s=0, border=True):
    if dp[i][s][border] is not None:
        return dp[i][s][border]

    if i > length:
        r = int(not bool(s))
        dp[i][s][border] = r
        return r

    cnt = 0
    for n in range(max(9 * (not border), nums[i]) + 1):
        cnt = mod(cnt + dfs(i + 1, (s + n) % d, border and nums[i] == n))
    dp[i][s][border] = cnt
    return cnt
# print(mod(dfs() - 1))

for i in reversed(range(length + 2)):
    for s in reversed(range(d)):
        for border in [False, True]:
            if i > length:
                dp[i][s][border] = int(not bool(s))
                continue

            cnt = 0
            for n in range(max(9 * (not border), nums[i]) + 1):
                cnt = mod(cnt + dp[i + 1][(s + n) % d][border and nums[i] == n])
            dp[i][s][border] = cnt

print(mod(dp[0][0][1] - 1 + M))
import sys
import copy

N = int(input())
table = []
for i in range(N):
    A = [int(j) for j in input().split()]
    table.append(A)
tas = copy.deepcopy(table)
for k in range(N):
    for i in range(N):
        for j in range(N):
            tas[j][i] = min(tas[j][i], tas[j][k] + tas[k][i])

for y in range(N):
    for x in range(y+1, N):
        if A[y][x] != tas[y][x]:
            print(-1)
            sys.exit()
ans = 0
for i in range(N):
    for j in range(i + 1, N):
        flag = True
        for k in range(N):
            if i == k or j == k:
                continue
            if table[j][i] >= table[j][k] + table[k][i]:
                flag = False
        if flag:
            ans += table[j][i]
print(ans)



### FIXED CODE ###

import sys
import copy

N = int(input())
table = []
for i in range(N):
    A = [int(j) for j in input().split()]
    table.append(A)
tas = copy.deepcopy(table)
for k in range(N):
    for i in range(N):
        for j in range(N):
            tas[j][i] = min(tas[j][i], tas[j][k] + tas[k][i])

for y in range(N):
    for x in range(y+1, N):
        if table[y][x] != tas[y][x]:
            print(-1)
            sys.exit()
ans = 0
for i in range(N):
    for j in range(i + 1, N):
        flag = True
        for k in range(N):
            if i == k or j == k:
                continue
            if table[j][i] >= table[j][k] + table[k][i]:
                flag = False
        if flag:
            ans += table[j][i]
print(ans)
n, l = input().split()

def apple_aji(i):
  return int(l) + int(i) - 1

def apple_pie(n):
  ajis = [apple_aji(x) for x in n]
  mini = min(list(map(abs, ajis)))
  ajis.remove(mini)
  return sum(ajis)

print(apple_pie(range(1, int(n))))

### FIXED CODE ###

n, l = input().split()

def apple_aji(i):
  return int(l) + int(i) - 1

def remove_min(p):
  minimun = min(list(map(abs, p)))
  if minimun not in p:
    minimun = minimun * -1
  p.remove(minimun)
  return p

def apple_pie(n):
  ajis = [apple_aji(x) for x in n]
  return sum(remove_min(ajis))

print(apple_pie(range(1, int(n)+1)))
N = input()
A = [a for a in input().split()]

ans = 1

for i in range(len(A)):
    if ans > 10 ** 18:
        print(-1)
        exit()
    ans *= A[i]

print(ans)

### FIXED CODE ###

N = input()
A = [int(a) for a in input().split()]

ans = 1

if 0 in A:
    print(0)
    exit()

for i in range(len(A)):
    if ans > 10 ** 18:
        print(-1)
        exit()
    ans *= A[i]


if ans > 10 ** 18:
    print(-1)
    exit()
print(ans)
# coding: utf-8
# submission # - User: herp_sy
# https://atcoder.jp/contests/
#
# lang: Python3 (3.4.3)

import math
import statistics
import numpy as np
import queue

a,b = map(int, input().split())
print(int(a / math.gcd(a,b) * b))


### FIXED CODE ###

# coding: utf-8
# submission # - User: herp_sy
# https://atcoder.jp/contests/
#
# lang: Python3 (3.4.3)

def gcd(a,b):
  if a == 0:
    return b
  elif b == 0:
    return a
  else:
    return gcd(b,a % b)

a,b = map(int, input().split())
print(int(a / gcd(a,b) * b))
S = int(input())
if S == 'AAA' or S == 'BBB':
    print('No')
else:
    print('Yes')

### FIXED CODE ###

S = input()
if S == 'AAA' or S == 'BBB':
    print('No')
else:
    print('Yes')
import itertools
N,K = map(int,input().split())
A = map(int,input().split())
t = list(list(itertools.combinations(A,K)))
ans = sum(t[0])
for i in t:
    ans = min(ans,sum(i))
print(ans)


### FIXED CODE ###

a = input()
print("A" if a in "ABCDEFGHIJKLMNOPQRSTUVWXYZ" else "a")
a = int(input())
if a == 1:
  print(Hello World)
else:
  list=[int(input()) for i in range(2)]
  print(list[0]+list[1])

### FIXED CODE ###

a = int(input())
if a == 1:
  print('Hello World')
else:
  b=[int(input()) for i in range(2)]
  c=b[0]+b[1]


  print(c)
from collections import defaultdict


def dfs(p, x):
    counter[p] += x
    for c in children[p]:
        dfs(c, x)


children = defaultdict(list)
counter = defaultdict(int)

N, Q = map(int, input().split())
ab = [list(map(int, input().split())) for _ in range(N-1)]
px = [list(map(int, input().split())) for _ in range(Q)]

for i in range(N-1):
    a = ab[i][0]
    b = ab[i][1]
    children[a] += [b]
for i in range(Q):
    p = px[i][0]
    x = px[i][1]
    dfs(p, x)
ans = []
for i in range(1, N+1):
    ans.append(counter[i])
print(' '.join(map(str, ans)))


### FIXED CODE ###

import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**6)


def dfs(cur, par):
    for child in edge[cur]:
        if child == par:
            continue
        counter[child] += counter[cur]
        dfs(child, cur)


N, Q = map(int, input().split())
ab = [list(map(int, input().split())) for _ in range(N-1)]
px = [list(map(int, input().split())) for _ in range(Q)]
counter = [0] * N

edge = [[] for _ in range(N)]
for i in range(N-1):
    a = ab[i][0] - 1
    b = ab[i][1] - 1
    edge[a].append(b)
    edge[b].append(a)

for i in range(Q):
    p = px[i][0] - 1
    x = px[i][1]
    counter[p] += x


dfs(0, -1)
print(*counter)
a, b, c = map(int, input().split())

if abs(a - b) < abs(a - c) and abs(a - b) < abs(b - c):
    print(abs(a - b) + abs(b - c))
elif abs(a - c) < abs(a - b) and abs(a - c) < abs(b - c)
    print(abs(a - c) + abs(b - c)
else:
    print(abs(a - c) + abs(a - b))


### FIXED CODE ###

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

a.sort()

print(a[2]-a[0])
a,b = int(input().split())
#lis = list(map(int,input().split()))
if a<b:
    print("0")
else:
    print("10")

### FIXED CODE ###

a,b = map(int,input().split())
#lis = list(map(int,input().split()))
if a<b:
    print("0")
else:
    print("10")
A,B = map(input().split())
if A>=10 or B>=10: 
    print(-1)
else:
    print(A*B)

### FIXED CODE ###

A,B = map(int,input().split())
if A>=10 or B>=10: 
    print(-1)
else:
    print(A*B)
A, B = map(int, input().split())
return A+B if B % A == 0 else B-a

### FIXED CODE ###

A, B = map(int, input().split())
print(A+B if B % A == 0 else B-A)
a=input()
a=int(a)
d=a
if a<2:
    b=a
    a=2
else
    b=2
while c!=0:
    c=a%b
    a=b
    b=c
print(d*2/b)


### FIXED CODE ###

N=input()
N=int(N)
if N%2==0:
    print(N)
else:
    print(N*2)
import sys
import bisect

def dfs(u,k,r=0):

    B = [A[u]]
    if u == k:
        return B, True

    for v in E[u]:
        if v == r: continue  # 親は無視

        Ap, has_k = dfs(v,k,u)
        if has_k:
            B.extend(Ap)
            return B, True

    return [], False

def lis(A):
    
    dp = [A[0]]

    if len(A) == 1:
        return 1

    for i in range(len(A)):
        if A[i] > dp[-1]:
            dp.append(A[i])
        else:
            tmp = bisect.bisect_left(dp, A[i])
            dp[bisect.bisect_left(dp, A[i])] = A[i]
    
    return len(dp)

if __name__ == "__main__":

    N = int(sys.stdin.readline())
    A = [int(x) for x in sys.stdin.readline().split()]
    E = [[] for _ in range(N)]  # 辺の情報
    for _ in range(N-1):
        u, v = map(int, sys.stdin.readline().split())
        E[u-1].append(v-1)
        E[v-1].append(u-1)

    for i in range(N):
        C, _ = dfs(0,i)
        print(lis(C))

### FIXED CODE ###

import sys
import bisect  # 二分法


MAX_N = 200005
INF = 10**9 + 5

sys.setrecursionlimit(MAX_N)

N = int(sys.stdin.readline())
A = [int(x) for x in sys.stdin.readline().split()]
E = [[] for _ in range(N)]  # 辺の情報

for _ in range(N-1):
    u, v = map(int, sys.stdin.readline().split())
    E[u-1].append(v-1)
    E[v-1].append(u-1)

lis = [INF] * N
ans = [0] * N 

def dfs(u,r=-1):

    # u を訪れたときの処理
    i = bisect.bisect_left(lis, A[u])  # 
    old = lis[i]  # 書き換え前の値を一時保存
    lis[i] = A[u]

    for v in E[u]:
        if v == r: continue  # 親は無視

        dfs(v,u)
    
    ans[u] = bisect.bisect_left(lis,INF-1)
    lis[i] = old  # 書き換え前の状態に戻す

dfs(0)
for i in range(N):
    print(ans[i])
k, s = list(map(int, input().split()))
cnt = 0
for i in range(k+1):
    for j in range(k+1):
        for k in range(k+1):
            total = i+j+k
            if total==s:
                cnt += 1
print(cnt)

### FIXED CODE ###

s = input()
print(s.replace(',', ' '))
import sys
input = sys.stdin.readline
n, m = map(int, input().split())
x = list(map(int, input().split()))
a = 0
b = 0
ans = 0
mae = 0
b = [0] * 40
for i in range(40):
    for k in x:
        b[i] += (k & (1 << i)) >> i

c = [0] * 40
if b[0] > n - b[0]:
    c[0] = b[0]
else:
    c[0] = n - b[0]
for i in range(1,40):
    ansb = 0
    if b[i] > n - b[i]:
        ansb += b[k] << k
    else:
        ansb += n - b[k] << k
    c[i] = c[i-1] + ansb
for i in range(39, -1, -1):
    if m & (1 << i):
        ansb = mae
        ansb += b[i] << i
        ansb += c[k]
        if ans < ansb:
            ans = ansb
        mae += n-b[i] << i
    else:
        mae += b[i] << i
ans = max(ans, mae)
print(ans)


### FIXED CODE ###

#A

#B
"""
n = int(input())
l = list(map(int, input().split()))
l.sort()
ans = sum(l) - 2*l[-1]
if ans > 0:
    print("Yes")
else:
    print("No")
"""

#C
"""
import bisect
n, m = map(int, input().split())
x = list(map(int, input().split()))
x.sort()
xb = [abs(x[i] - x[i + 1]) for i in range(m-1)]
xb.sort(reverse=True)
ans = sum(xb[n - 1::])
print(ans)
"""

#D
n, m = map(int, input().split())
x = list(map(int, input().split()))
a = 0
b = 0
ans = 0
ansb = 0
mae = 0
b = [0 for i in range(40)]
for i in range(40):
    for k in x:
        b[i] += (k & (1 << i)) >> i

for i in range(39, -1, -1):
    if m & (1 << i) > 0:
        ansb = mae
        ansb += b[i] << i
        for k in range(i):
            ansb += max(b[k], n-b[k]) << k
        ans = max(ans, ansb)
        mae += (n-b[i]) << i
    else:
        mae += b[i] << i
ans = max(ans, mae)
print(ans)
N, M, C = map(int, input().split())
B = list(map(int, input().split()))
A = [0] * N
for i in range(N):
  A[i] = list(map(int, input().split()))

ans = 0
for i in range(N):
  y = C
  for j in range(M):
    y += A[j]*B[j]
  if y > 0:
    ans += 1
print(ans)


### FIXED CODE ###

N, M, C = map(int, input().split())
B = list(map(int, input().split()))
A = [0] * N
for i in range(N):
  A[i] = list(map(int, input().split()))

ans = 0
for i in range(N):
  y = C
  for j in range(M):
    y += A[i][j]*B[j]
  if y > 0:
    ans += 1
print(ans)
import math
R = int(input())
L = R*math.pie
print(L)

### FIXED CODE ###

import math
R = int(input())
L = 2*R*math.pi
print(L)
A, B = map(int, input().split())
if abs(A - b) <= 1:
    print("Brown")
else:
    print("Alice")

### FIXED CODE ###

A, B = map(int, input().split())
if abs(A - B) <= 1:
    print("Brown")
else:
    print("Alice")
import math

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

def lcm(x, y):
    return (x * y) // math.gcd(x, y)

def count_multiple(n):
    return (B // n) - ((A - 1) // n)

def count_not_multiple(n):
    return (B - A + 1) - count_multiple(n)

cnm = count_not_multiple
print(cnm(C) + cnm(D) - cnm(lcm(C, D)))


### FIXED CODE ###

import fractions

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

def lcm(x, y):
    return (x * y) // fractions.gcd(x, y)

def count_multiple(n):
    return (B // n) - ((A - 1) // n)

def count_not_multiple(n):
    return (B - A + 1) - count_multiple(n)

cnm = count_not_multiple
print(cnm(C) + cnm(D) - cnm(lcm(C, D)))
M = 998244353

N = int(input())
d_list = list(map(int, input().split()))
d_list.sort()

def fact(n):
	f = 1
	for i in range(2, n + 1):
		f = (f * i) % M
	return f

def check():
	d = d_list.pop(0)
	if d != 0:
		print(0)
	else:
		if d_list[0] == 0:
			print(0)
		else:
			d_counts = [1]
			prev_d = 0
			for d in d_list:
				if prev_d == d:
					d_counts[prev_d] += 1
				elif prev_d + 1 == d:
					d_counts.append(1)
					prev_d = d
				else:
					print(0)
					return
		count = 1
		prev_d = d_counts.pop(0)
		for d in d_counts:
			count = (count * pow(prev_d, d)) % M
			prev_d = d
		print(count)

check()


### FIXED CODE ###

M = 998244353

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

def check():
	if d_list[0] != 0:
		print(0)
		return
	d_list.sort()
	d_counts = []
	prev_d = -1
	for d in d_list:
		if prev_d == d:
			d_counts[prev_d] += 1
		elif prev_d + 1 == d:
			d_counts.append(1)
			prev_d = d
		else:
			print(0)
			return
	count = 1
	prev_c = d_counts.pop(0)
	if prev_c != 1:
		print(0)
	else:
		for c in d_counts:
			count = (count * pow(prev_c, c, M)) % M
			prev_c = c
		print(count)

check()