Harryxun/stf_run huggingface dataset:
def solve(n):
    for i in range(n+1):
        if (i+1)*i//2 > n:
            return i-1

from math import sqrt

N = int(input())
P = []
li = []
num = int(sqrt(N))+1
for i in range(2, num):
    if N%i == 0:
        P.append(i)
        P.append(N//i)

for p in P:
    e = 0
    while N%(p**(e+1)) == 0:
        e += 1
    if e > 0:
        li.append((p, e))
    N //= p ** e

ans = 0     
for (a,b) in li:
    ans += solve(b)
    
if ans == 0:
    if N != 1:
        ans += 1
        


print(ans)

### FIXED CODE ###

def solve(n):
    for i in range(n+2):
        if (i+1)*i//2 > n:
            return i-1

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])


    return arr



N = int(input())
li = factorization(N)
ans = 0
for [a,b] in li:
    ans += solve(b)
    
if ans == 0:
    if N != 1:
        ans += 1
print(ans)
c = input()
if c == 'a' or c =='i' or c == 'u' or c == 'e' or c =='o':
  priint('vowel')
else:
  print('consonant')

### FIXED CODE ###

c = input()
if c == 'a' or c =='i' or c == 'u' or c == 'e' or c =='o':
  print('vowel')
else:
  print('consonant')
from heapq import heappush, heappop
from collections import deque,defaultdict,Counter
import itertools
from itertools import permutations,combinations
import sys
import bisect
import string
#import math
#import time
#import random  # randome is not available at Codeforces
def I():
    return int(input())
def MI():
    return map(int,input().split())
def LI():
    return [int(i) for i in input().split()]
def LI_():
    return [int(i)-1 for i in input().split()]
def StoI():
    return [ord(i)-97 for i in input()]
def show(*inp,end='\n'):
    if show_flg:
        print(*inp,end=end)
YN=['Yes','No']
mo=10**9+7
inf=float('inf')
#ts=time.time()
#sys.setrecursionlimit(10**6)
input=lambda: sys.stdin.readline().rstrip()
import sys
sys.setrecursionlimit(10**7)

show_flg=False
show_flg=True


n,m=LI()
a=LI()
g=[[] for _ in range(n)]
ans=0
cmp=0
for i in range(m):
    x,y=LI()
    g[x].append(y)
    g[y].append(x)

rest=[]
q=[]
v=[-1]*n

for i in range(n):
    if v[i]!=-1:
        continue
    p=[]
    cost=[]
    p.append(i)
    heappush(cost,a[i])
    while p:
        c=p.pop()
        v[c]=a[c]
        for nb in g[c]:
            if v[nb]==-1:
                p.append(nb)
                v[nb]=a[nb]
                heappush(cost,a[nb])
    ans+=heappop(cost)
    cmp+=1
    while cost:
        heappush(rest,heappop(cost))

if cmp==1:
    ans=0
elif len(rest)<cmp-1:
    ans="Impossible"
    a[10**100]
else:# cmp=n-m, n-m-1 edges needed, 2n-2m-2 vers, 2n-2m-2-cmp=n-m-2=cmp-2
    for i in range(cmp-2):
        ans+=heappop(rest)

print(ans)

### FIXED CODE ###

from heapq import heappush, heappop
from collections import deque,defaultdict,Counter
import itertools
from itertools import permutations,combinations
import sys
import bisect
import string
#import math
#import time
#import random  # randome is not available at Codeforces
def I():
    return int(input())
def MI():
    return map(int,input().split())
def LI():
    return [int(i) for i in input().split()]
def LI_():
    return [int(i)-1 for i in input().split()]
def StoI():
    return [ord(i)-97 for i in input()]
def show(*inp,end='\n'):
    if show_flg:
        print(*inp,end=end)
YN=['Yes','No']
mo=10**9+7
inf=float('inf')
#ts=time.time()
#sys.setrecursionlimit(10**6)
input=lambda: sys.stdin.readline().rstrip()
import sys
sys.setrecursionlimit(10**7)

show_flg=False
show_flg=True


n,m=LI()
a=LI()
g=[[] for _ in range(n)]
ans=0
cmp=0
for i in range(m):
    x,y=LI()
    g[x].append(y)
    g[y].append(x)

rest=[]
q=[]
v=[-1]*n

for i in range(n):
    if v[i]!=-1:
        continue
    p=[]
    cost=[]
    p.append(i)
    heappush(cost,a[i])
    while p:
        c=p.pop()
        v[c]=a[c]
        for nb in g[c]:
            if v[nb]==-1:
                p.append(nb)
                v[nb]=a[nb]
                heappush(cost,a[nb])
    ans+=heappop(cost)
    cmp+=1
    while cost:
        heappush(rest,heappop(cost))

if cmp==1:
    ans=0
elif len(rest)<cmp-2:
    ans="Impossible"
else:# cmp=n-m, n-m-1 edges needed, 2n-2m-2 vers, 2n-2m-2-cmp=n-m-2=cmp-2
    for i in range(cmp-2):
        ans+=heappop(rest)

print(ans)
N = int(input())
A = map(int, input().split())

count = 0
flag = True

while flag == True:
    for i in range(N):
        if A[i]%2 == 0:
            A[i] /= 2

        else:
            flag = False
            break

        count += 1

print(count)


### FIXED CODE ###

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

count = -1
flag = True

while flag == True:
    count += 1
    for i in range(N):
        if A[i]%2 == 0:
            A[i] /= 2

        else:
            flag = False
            break



print(count)
S=input
print("yes" if len(S)==len(set(S)) else "no")

### FIXED CODE ###

S=input()
print("yes" if len(S)==len(set(S)) else "no")
def main():
    N,K=map(int,open(0).read().split())
    keta=1
    while flag==0:
        if K**keta<=N and K**(keta+1)>N:
            print(keta+1)
            return
        keta= keta+1

main()

### FIXED CODE ###

def Base_10_to_n(X, n):
    X_dumy = X
    out = ''
    while X_dumy>0:
        out = str(X_dumy%n)+out
        X_dumy = int(X_dumy/n)
    return out
    
def main():
    N,K=map(int,input().split())
    print(len(Base_10_to_n(N,K)))
main()
A,B,C,D = map(int,input().split())

def gcd(a, b):
    while b:
        a, b = b, a % b
    return a

def lcm(a, b):
    return a * b // gcd (a, b)

CD = lcm(C,D)
c_div = 0
d_div = 0
cd_div = 0
ans = 0
if A % C == 0:
    first_C = A
else:
    first_C = A + C -(A%C)
last_C = B -(B%C)
c_div = (last_C - first_C)//C + 1

if A % D == 0:
    first_D = A
else:
    first_D = A + D -(A%D)
    last_D = B - (B%D)
d_div = (last_D - first_D)//D + 1

if A % CD == 0:
    first_CD =A
else:
    first_CD = A + CD -(A%CD)
    last_CD = B -(B%CD)
cd_div = (last_CD - first_CD)//CD + 1

ans = c_div + d_div -cd_div
print(B-A+1-ans)


### FIXED CODE ###

A,B,C,D = map(int,input().split())
def gcd(a, b):
    while b:
        a, b = b, a % b
    return a
def lcm(a, b):
    return a * b // gcd (a, b)
CD = lcm(C,D)
c_div = 0
d_div = 0
cd_div = 0
ans = 0
if A % C == 0:
    first_C = A
else:
    first_C = A + C -(A%C)
last_C = B -(B%C)
c_div = (last_C - first_C)//C + 1

if A % D == 0:
    first_D = A
else:
    first_D = A + D -(A%D)
last_D = B - (B%D)
d_div = (last_D - first_D)//D + 1

if A % CD == 0:
    first_CD =A
else:
    first_CD = A + CD -(A%CD)
last_CD = B -(B%CD)
cd_div = (last_CD - first_CD)//CD + 1

ans = c_div + d_div -cd_div
print(B-A+1-ans)
N = int(input())
B = list(map(int, input().split()))
A = []
A.append(B[N-2])
for i in reversed(range(1, len(B))):
    if B[i]>=B[i-1]:
        A.append(B[i-1])
    else:
        A.append(B[i])

A.append(B[0])
print(A)
print(sum(A))


### FIXED CODE ###

N = int(input())
B = list(map(int, input().split()))
A = []
A.append(B[N-2])
for i in reversed(range(1, len(B))):
    if B[i]>=B[i-1]:
        A.append(B[i-1])
    else:
        A.append(B[i])

A.append(B[0])

print(sum(A))
n=int(input())
d={}
for i in range(1,100):
    for j in range(i,100):
        if i**2>n or j**2>n: break
        for k in range(j,100):
            tmp=i**2+j**2+k**2+i*j+j*k+k*i
            if tmp>n: break
            if i==k: x=1
            elif i==j or j==k: x=3
            else: x=6
            if tmp in d: d[tmp]+=x
            else: d[tmp]=x
for i in range(1,n+1):
    if i in d: print(d[i]

### FIXED CODE ###

n=int(input())
d={}
for i in range(1,100):
    if i**2>n: break
    for j in range(i,100):
        if j**2>n: break
        for k in range(j,100):
            tmp=i**2+j**2+k**2+i*j+j*k+k*i
            if tmp>n: break
            if i==k: x=1
            elif i==j or j==k: x=3
            else: x=6
            if tmp in d:
                d[tmp]+=x
            else:
                d[tmp]=x
for i in range(1,n+1):
    if i in d: print(d[i])
    else: print(0)
import numpy as np
H, W, N = map(int, input().split())
d = 10**9+1
L = []
S = set()
for _ in range(N):
    a, b = map(int, input().split())
    S.add((a, b))
Map = np.zeros([5, 5], dtype = 'int')
ans = [0]*10
for i in S:
    a, b = i
    for i in range(-2, 3):
        for j in range(-2, 3):
            a1, b1 = a+i, b+j"""
            if (1<=a1<=H) and (1<=b1<=W):
                if (a1, b1) in S:
                    Map[i+2, j+2] = 1
                else:
                    Map[i+2, j+2] = 0
            else:
                Map[i+2, j+2] = -100
    for i in range(-1, 2):
        for j in range(-1, 2):
            k = 1#Map[i+1:i+4, j+1:j+4].sum()
            if k>=0:
                ans[k]+=1
for i in range(1, 10)[::-1]:
    ans[i] //=i
ans[0] = (W-2)*(H-2)-sum(ans)
for i in ans:
    print(i)"""
        


### FIXED CODE ###

H, W, N = map(int, input().split())
d = 10**9+1
L = []
S = set()
for _ in range(N):
    a, b = map(int, input().split())
    S.add((a, b))
Map =[[0]*5 for _ in range(5)]
ans = [0]*10
for i in S:
    a, b = i
    for i in range(-2, 3):
        for j in range(-2, 3):
            a1, b1 = a+i, b+j

            if (1<=a1<=H) and (1<=b1<=W):
                if (a1, b1) in S:
                    Map[i+2][j+2] = 1
                else:
                    Map[i+2][j+2] = 0
            else:
                Map[i+2][j+2] = -100
    for i in range(-1, 2):
        for j in range(-1, 2):
            res = 0
            for k in range(3):
                for l in range(3):
                    res+=Map[i+1+k][j+1+l]
            if res>=0:
                ans[res]+=1
for i in range(1, 10)[::-1]:
    ans[i] //=i
ans[0] = (W-2)*(H-2)-sum(ans)
for i in ans:
    print(i)
t = input()
n = len(t)
ans = list(t)
for i, c in enumerate(t):
    if c == '?':
        if i == 0:
            if t[i+1] == 'P':
                s = 'D'
            else:
                s = 'P'
        elif i == n-1:
            s = 'D'
        else:
            if ans[i-1] == 'D' and t[i+1] == 'P':
                s = 'D'
            elif ans[i-1] == 'D' and t[i+1] == 'D':
                s = 'P'
            elif ans[i-1] == 'P' and t[i+1] == 'P':
                s = 'D'
            elif ans[i-1] == 'P' and t[i+1] == 'D':
                s = 'D'
            elif ans[i-1] == 'P' and t[i+1] == '?':
                s = 'D'
            elif ans[i-1] == 'D' and t[i+1] == '?':
                s = 'P'
    else:
        s = c
    ans[i] = s
print(''.join(ans))

### FIXED CODE ###

def main():
    t = input()
    if t == '?':
        return 'D'
    n = len(t)
    ans = list(t)
    for i, c in enumerate(t):
        if c == '?':
            if i == 0:
                if t[i+1] == 'P':
                    s = 'D'
                else:
                    s = 'P'
            elif i == n-1:
                s = 'D'
            else:
                if ans[i-1] == 'D' and t[i+1] == 'P':
                    s = 'D'
                elif ans[i-1] == 'D' and t[i+1] == 'D':
                    s = 'P'
                elif ans[i-1] == 'P' and t[i+1] == 'P':
                    s = 'D'
                elif ans[i-1] == 'P' and t[i+1] == 'D':
                    s = 'D'
                elif ans[i-1] == 'P' and t[i+1] == '?':
                    s = 'D'
                elif ans[i-1] == 'D' and t[i+1] == '?':
                    s = 'P'
        else:
            s = c
        ans[i] = s
    return ''.join(ans)

print(main())
a, b = map(int, input().split())
if a < 0 or b < 0:
    break
elif a > 10 **9 or b > 10 **9:
    break
else:
    d = int(a/b)
    r = int(a%b)
    f = float(a/b)
    print(d, r, "{0:01.5f}".format(f))

### FIXED CODE ###

while True:
    a, b = map(int, input().split())
    if a <= 0 or b <= 0:
        break
    elif a > 10 **9 or b > 10**9:
        break
    else:
        d = int(a/b)
        r = int(a%b)
        f = float(a/b)
        print(d, r, "{0:01.5f}".format(f))
        break
base_str = input()
num = int(input())
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
            'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
            'U', 'V', 'W', 'X', 'Y', 'Z']
def replacer(letter, num):
    letter_index = alphabets.index(letter)
    return(alphabets[(letter_index+num)%27])
answer = []
for i in range(len(base_str)):
    answer.append(replacer(base_str[i], num))
answer = ''.join(answer)
print(answer)

### FIXED CODE ###

num = int(input())
base_str = input()
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
            'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
            'U', 'V', 'W', 'X', 'Y', 'Z']
def replacer(letter, num):
    letter_index = alphabets.index(letter)
    return(alphabets[(letter_index+num)%26])
answer = []
for i in range(len(base_str)):
    answer.append(replacer(base_str[i], num))
answer = ''.join(answer)
print(answer)
[w,h,x,y]=[int(i) for i in input().split()]

a=int(0)

if x*2==w and y*2==h:
    a=int(1)
else:
    a=int(0)

print(double(w*h/2)+" "+a)


### FIXED CODE ###

[w,h,x,y]=[int(i) for i in input().split()]

a=int(0)

if x*2==w and y*2==h:
    a=int(1)
else:
    a=int(0)

print(str(w*h/2)+" "+str(a))
from collections import defaultdict
n,k=map(int,input().split())
l=list(map(int,input().split()))
d=defaultdict(set)
def dfsutil(s,a):
    visited[s]=True
    for i in d[s]:
        if visited[i]==False:
            return dfsutil(i,a+1)
    return a,s,i
def dfsutil2(s,k,a):
    visited[s]=True
    if a==k:
        return s
    for i in d[s]:
        if visited[i]==False:
            return dfsutil2(i,k,a+1)
    
visited=defaultdict(bool)

for i in range(len(l)):
    d[i+1].add(l[i])
c=dfsutil(1,1)
# print(c)
if c[1] in d[c[1]]:
    if k>=c[0]:
        print(c[1])
    else:
        visited=defaultdict(bool)
        print(dfsutil2(1,k,0))   
else:
    if k<=c[0]:
        print(dfsutil2(1,k,0))
    if k>c[0]:
        visited=defaultdict(bool)
        c1=dfsutil(c[2],1)
        if c[2]!=1:
            
            k=k-(c[0]-c1[0])
            
        # visited=defaultdict(bool)
        # print(c)
        # print(c1)
        # print(k)
        k=k%c1[0]
        # print(k)
        # print(c1)
        # print(c1)
        
        # print(k)
        visited=defaultdict(bool)
        if k==0:
            print(c[2])
        else:
            print(dfsutil2(c[2],k,0))
        
    


### FIXED CODE ###

from collections import defaultdict
n,k=map(int,input().split())
l=list(map(int,input().split()))
d=defaultdict(int)
for i in range(n):
    d[i+1]=l[i]
visited=set()
l=[]
i=1
while True:
    l.append(i)
    if i not in visited:
        visited.add(i)
    else:
        break
    i=d[i]
first=l.index(l[-1])
if k<first:
    print(l[k])
else:
    k=(k-first)%((len(l)-1)-first)
    k+=first
    print(l[k])
# https://atcoder.jp/contests/abc075/tasks/abc075_c
class UnionFind():
    def __init__(self, N):
        self._root = [-1 for _ in range(N)]

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

    def unite(self, x, y):
        gx = self.find(x)
        gy = self.find(y)
        if gx == gy: return False
        if self._root[gx] > self._root[gy]:
            gx, gy = gy, gx
        self._root[gx] += self._root[gy]
        self._root[gy] = gx
        return True

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

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

    def roots(self):
        return [i for i in self._root if i < 0]


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

nodes = []
for _ in range(m):
    a, b = map(int, input().split())
    nodes.append((a, b))

cnt = 0
for i in range(m):
    uf = UnionFind(n)
    for j in range(m):
        if i == j: continue
        uf.unite(nodes[j][0]-1, nodes[j][1]-1)
    cnt += (len(uf.roots()) != 1)
print(cnt)

### FIXED CODE ###

# https://atcoder.jp/contests/abc075/tasks/abc075_c
class UnionFind():
    def __init__(self, N):
        self._root = [-1 for _ in range(N)]

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

    def unite(self, x, y):
        gx = self.find(x)
        gy = self.find(y)
        if gx == gy: return False
        if self._root[gx] > self._root[gy]:
            gx, gy = gy, gx
        self._root[gx] += self._root[gy]
        self._root[gy] = gx
        return True

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

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

    def roots(self):
        return [i for i in self._root if i < 0]


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

nodes = []
for _ in range(m):
    a, b = map(int, input().split())
    nodes.append((a, b))

cnt = 0
for i in range(m):
    uf = UnionFind(n)
    for j in range(m):
        if i != j:
          uf.unite(nodes[j][0]-1, nodes[j][1]-1)
    cnt += (len(uf.roots()) != 1)
print(cnt)
S = input().split()
d = S[0] - S[1]
if d <= 0:
  print('0')
else:
  print(d)
  

### FIXED CODE ###

l = list(map(int, input().split()))
if l[0] - l[1] <= 0:
  print('0')
else:
  print(l[0] - l[1])
N=int(input())
A=list(map(int,input().split()))
print(*A[::-2]+*A[N%2::2])

### FIXED CODE ###

n = int(input())
A = list(map(int,input().split()))
answer = A[1::2][::-1]+A[::2]
if n%2==1:
    answer=answer[::-1]
print(*answer)
a,b,c,k = [int(i) for i in input().split()]
if k<=a:
  print(k)
else if k<=a+b and k>a:
  print(a)
else:
  print(a-(k-a-b))
      

### FIXED CODE ###

a,b,c,k = [int(i) for i in input().split()]
if k<=a:
  print(k)
elif k<=a+b and k>a:
  print(a)
else:
  print(a-(k-a-b))
a = int( input() )
d = int( input() )
for i in range( 0, 5 ):
	print( "yes" )

### FIXED CODE ###

def solve( p, t ):
	global isExist, n, A
	isExist[ t ] = True
	if p < n:
		solve( p+1, t-A[p] )
		solve( p+1, t )
	else:
		return

isExist = [False]*2001 
n = int( input() )
A = [ int( val ) for val in input().rstrip().split( ' ' ) ]
q = int( input() )
M = [ int( val ) for val in input().rstrip().split( ' ' ) ]
s = sum( A )
solve( 0, s )
for i in range( 0, q ):
	if isExist[ M[i] ]:
		print( "yes" )
	else:
		print( "no" )
N, K = map(int, input().split())

if N > K:
    N = N - K*(N//K)

if N=K:
    print(0)
else:
    print(K-N)

### FIXED CODE ###

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

if N > K:
    N = N - K*(N//K)

if N==K:
    print(0)
else:
    print(min(N,K-N))
A = list(map(int,input().split()))
K = int(input())
 
A.sort()
ans =A[0]+A[1]+A[2]*(2**K)

print(ans)

### FIXED CODE ###

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

if a<=b:
    print(a)
else:
    print(a-1)
n=int(input())
a=list(int,input().split())
print(sum(a)-n)

### FIXED CODE ###

n=int(input())
a=list(map(int,input().split()))
print(sum(a)-n)
N = int(raw_input())
H = raw_input()
H = H.split()
for i, val in enumerate(H):
    H[i] = int(val)
Top = 0
Bottom = len(H)-1
T_PList = [0, Bottom]
count = max(H)
total = 0
Top_L = []
Bot_L = []
current_top = H[0]
current_bot = H[0]
if H[0] > H[1]:
    Top_L.append(H[0])
    current_bot = H[1]
    current_top = [-1]
elif H[0] < H[1]:
    current_top = H[1]
    current_bot = -1

for i in range(2,len(H),1):
    if (current_top == H[i-1]) & (H[i]>H[i-1]):
        current_top = H[i]
    elif (current_top == H[i-1]) & (H[i]<H[i-1]):
        Top_L.append(current_top)
        current_bot = H[i]
        current_top = -1
    elif (current_bot == H[i-1]) & (H[i]<H[i-1]):
        current_bot = H[i+1]
    elif (current_bot == H[i-1]) & (H[i]>H[i-1]):
        Bot_L.append(current_bot)
        current_bot = -1
        current_top = H[i]
    # print(current_top)
    # print(current_bot)
last = len(H)
if H[last-1] > H[last-2]:
    Top_L.append(H[last-1])
print(sum(Top_L)-sum(Bot_L))




### FIXED CODE ###

N = int(input())
H = input()
H = H.split()
for i, val in enumerate(H):
    H[i] = int(val)
maxNum = max(H)
counter = 0
for i in range(maxNum):
    for j, val in enumerate(H):
        if H[j] != 0:
            H[j] -= 1
            if j < (N-1):
                if H[j + 1] == 0:
                    counter += 1
            if j == (N - 1):
                counter += 1
    # print(H)
    # print(counter)
print(counter)
a,b,c = map(int,input().split())
import math
import decimal
decimal.getcontext().prec = 15
if decimal(math.sqrt(a))+decimal(math.sqrt(b)) < decimal(math.sqrt(c)):
    print('Yes')
else:
    print('No')

### FIXED CODE ###

a,b,c = map(int,input().split())
if c-a-b < 0:
    print('No')
elif (c-a-b)**2-4*a*b > 0:
    print('Yes')
else:
    print('No')
N = int(input())
S = [str(input()) for i in range(N)]

ac = 0
wa = 0
tle = 0
re = 0
for i in S:
    if i=='AC':
        ac+=1
    elif i=='WA':
        wa+=1
    elif i='TLE':
        tle+=1
    else:
        re+=1
print('AC x　'+str(ac))
print('WA x　'+str(wa))
print('TLE x　'+str(tle))
print('RE x　'+str(re))


### FIXED CODE ###

N = int(input())
S = [str(input()) for i in range(N)]

ac = 0
wa = 0
tle = 0
re = 0
for i in S:
    if i=='AC':
        ac+=1
    elif i=='WA':
        wa+=1
    elif i=='TLE':
        tle+=1
    else:
        re+=1
print('AC x '+str(ac))
print('WA x '+str(wa))
print('TLE x '+str(tle))
print('RE x '+str(re))
n=int(input())
list=[]
for num in range(n):
    i=int(input())
    list.append(i)
for num in range(n):
    print(list.index(num+1)+1)

### FIXED CODE ###

n=int(input())
a=[0]*n
l =list(map(int, input().split()))
for i in range(n):
    a[l[i]-1]=i+1
for i in range(n):
    print(a[i])
n = int(input())
mul = 1
lst = [map(int.input().split())]
for ele in lst:
  mul = mul *ele
if(mul > 1e18):
  print(-1)
else:
  print(mul)

### FIXED CODE ###

def solve():
    n = int(input())
    lst = list(map(int,input().split()))
    if 0 in lst:
        print(0)
        return
    mul = 1
    for ele in lst:
        mul = mul * ele
        if mul > 1e18:
            print(-1)
            return
    
    print(mul)
    
solve()
S = input()
T = input()

if (S.length < 1 || 10 < S.length):
  return 'No'
elif (S.length+1 == T.length):
  if (S+T[T.length-1] == T):
    return 'Yes'
  else:
    return 'No'
else:
  return 'No'

### FIXED CODE ###

S = input()
T = input()

if len(S) < 1 or 10 < len(S):
  print('No')
elif len(S)+1 == len(T):
  if S+T[len(T)-1] == T:
    print('Yes')
  else:
    print('No')
else:
  print('No')
N = int(input())
a = list(map(int,input().split()))
one = 0
four = 0
two = 0

for j in range(N):

  if a[j]%2 == 1:
    one += 1
  elif a[j]%4 == 0:
    four += 1
  else :
    two +=1

  
if one =< four or (two == 0 and four == one-1):
  print('Yes')
else:
  print('No')

### FIXED CODE ###

N = int(input())
a = list(map(int,input().split()))
one = 0
four = 0
two = 0

for j in range(N):

  if a[j]%2 == 1:
    one += 1
  elif a[j]%4 == 0:
    four += 1
  else :
    two +=1

print("Yes" if four >= one or (four == one - 1 and two == 0) else "No")
S = set(input())
a = set([chr(i) for i in range(ord('a'), ord('z')+1)])
print(sorted(list(a-S))[0])

### FIXED CODE ###

S = set(input())
a = set([chr(i) for i in range(ord('a'), ord('z')+1)])
result = sorted(list(a-S))
if len(result) == 0:
    print('None')
else:
    print(result[0])