Harryxun/stf_run huggingface dataset:
n, k = map(int, input().split())
a = list(map(int, input().split())) 
a.sort()
a.reverse() 
x = a[0]   
for i in range (1, N):
  while a[i] != 0:
    x , a[i] = a[i] , x % a[i]
if K > a[0]:
  print('IMPOSSIBLE')
else:
  print('POSSIBLE' if K%x == 0 else 'IMPOSSIBLE')

### FIXED CODE ###

N,K = map(int, input().split())
A = list(map(int, input().split())) 
A.sort()
A.reverse() 
x = A[0]   
for i in range (1, N):
  while A[i] != 0:
    x , A[i] = A[i] , x % A[i]
if K > A[0]:
  print('IMPOSSIBLE')
else:
  print('POSSIBLE' if K%x == 0 else 'IMPOSSIBLE')
import math
import re
import time

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

total=(L-1)*N+((1+N)/2)*N
mn=1e9
for a in range(N):
    l=L+(a+1)-1
    total2+=l
    mn=min([mn,abs(l)])
#print("{} - {} = {}".format(total,mn,int(total-mn)))
print(int(total-mn))

### FIXED CODE ###

import math
import re
import time

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

total=(L-1)*N+((1+N)/2)*N
mn=1e9
ans=1e9
for a in range(N):
    l=L+(a+1)-1
    if abs(l)<mn:
        mn=min([mn,abs(l)])
        ans=l
print(int(total-ans))
a,b,v,w,t = map(int,input().split())

d = abs(b-a)
p = abs(v-w)
i=0
for i in range(t+1):
  if v<=w:
    print("NO")
  if p*i == d:
    print("YES")


### FIXED CODE ###

a, v = map(int, input().split())
b, w = map(int, input().split())
t = int(input())
if v <= w:
    print('NO')
else:
    if 1 <= (abs(b - a) / (v - w)) <= t:
        print('YES')
    else:
        print('NO')
import sys
import math

t = int(sys.stdin.readline())
for _ in range(t):
    a, b, c, d = map(int, sys.stdin.readline().split())
    if a < b:
        print("No")
    elif d < b:
        print("No")
    elif c >= b:
        print("Yes")
    else:
        g = math.gcd(b, d)
        if b - g + (a % g) > c:
            print("No")
        else:
            print("Yes")

### FIXED CODE ###

import sys

def gcd(x, y):
    x, y = sorted([x, y])
    while y % x:
        y, x = x, y % x
    return x

t = int(sys.stdin.readline())
for _ in range(t):
    a, b, c, d = map(int, sys.stdin.readline().split())
    if a < b:
        print("No")
    elif d < b:
        print("No")
    elif c >= b:
        print("Yes")
    else:
        g = gcd(b, d)
        if b - g + (a % g) > c:
            print("No")
        else:
            print("Yes")
s = input()
ans = "WA"

if s[0] == "A" and a[2:-2].count("C") == 1:
  tmp = s[1:]
  tmp.replace("C","")
  ans = "AC" if tmp.islower() else "WA"
  
print(ans)

### FIXED CODE ###

s = input()
ans = "WA"

if s[0] == "A" and s[2:-1].count("C") == 1:
  tmp = s[1:]
  tmp = tmp.replace("C","")
  ans = "AC" if tmp.islower() else "WA"
  
print(ans)
memo = {
        1:"a", 2:"b", 3:"c",4:"d", 5:"e",
        6:"f", 7:"g", 8:"h", 9:"i",10:"j",
       11:"k",12:"l",13:"m",14:"n",15:"o",
       16:"p",17:"q",18:"r",19:"s",20:"t",
       21:"u",22:"v",23:"w",24:"x",25:"y",26:"z"
        }

n = int(input())

def name(n):
    if n <= 26:
        return memo[n]
    
    memo[n] = name(n//26) + name(n%26)

    return memo[n]
  
print(name(n))

### FIXED CODE ###

n = int(input())

def name(n):
  if (n == 0):
    return "";
  n-=1
  return name(n//26) + chr(ord("a")+ n%26)
  
print(name(n))
while 1:
   H, W = map(int, raw_input().split())
         
   if H == 0 and W == 0:
      break
   for i in range(H):
      if i%2 == 0:
         if W%2 == 0:
            print "#."*(W/2)
         wlif W%2 == 1:
            print "#."*(w/2)+"#"
      elif i%2 == 1:
         if W%2 == 0:
            print ".#"*(W/2)
         elif W%2 == 1:
            print ".#"*(w/2)+"."
   print ""

### FIXED CODE ###

while 1:
   H, W = map(int, raw_input().split())
           
   if H == 0 and W == 0:
      break
   for i in range(H):
      if i%2 == 0:
         if W%2 == 0:
            print "#."*(W/2)
         elif W%2 == 1:
            print "#."*(W/2)+"#"
      elif i%2 == 1:
         if W%2 == 0:
            print ".#"*(W/2)
         elif W%2 == 1:
            print ".#"*(W/2)+"."
   print ""
a,b = map(int, input().split())
diff = b - a
def tower(n):
    if n < 1:
        return 0
    return n + tower(n - 1)
print(tower(diff) - b)

### FIXED CODE ###

a,b = map(int, input().split())
print(int(((b-a)*(b-a+1))/2) - b)
aaa

### FIXED CODE ###

m,n = map(int,input().split())
print((m-1)*(n-1))
N, M = map(int, input().split())
I = [N + 1 for i in range(N)]
for i in range(M):
  a, b = map(int, input().split())
  I[a - 1] = min(I[a - 1], b - 1)
cut = 0
for i in range(N):
  if I[i] == i + 1:
    cut += 1
  else:
    I[i + 1] = min(I[i + 1], I[i])
print(cut)

### FIXED CODE ###

N, M = map(int, input().split())
A = []
for i in range(M):
  a, b = map(int, input().split())
  A.append([a - 1, b - 1])
A = sorted(A, key=lambda a: a[0])
cut = 1
b_min = N
for a in A:
  if a[0] >= b_min:
    cut += 1
    b_min = N
  b_min = min(b_min, a[1])
print(cut)
N,Q = [int(i) for i in input().split()]
aaabbb = [[int(i) for i in input().split()] for j in range(N-1)]
pppxxx = [[int(i) for i in input().split()] for j in range(Q)]

tree = [[] for i in range(N+1)]

for a,b in aaabbb:
    a = a
    b = b
    tree[a].append(b)

#print(tree)

counter = [0 for i in range(N+1)]

def dfs(pos,x):
    #print(pos)
    counter[pos]+=x
    for next_pos in tree[pos]:
        dfs(next_pos,x)

for p,x in pppxxx:
    #print("newdfs")
    dfs(p,x)

print(" ".join([str(i) for i in counter[1:]]))


### FIXED CODE ###

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

N,Q = [int(i) for i in input().split()] #N個の頂点、Q回の操作
aaabbb = [[int(i) for i in input().split()] for j in range(N-1)] #木の辺
pppxxx = [[int(i) for i in input().split()] for j in range(Q)] #操作

tree = [[] for i in range(N+1)]

for a,b in aaabbb:
    tree[a].append(b)
    tree[b].append(a)

#print(tree)

counter = [0 for i in range(N+1)]

for p,x in pppxxx:
    counter[p] += x

#print(counter)

def dfs(pos,parent,add):
    counter[pos] += add
    for next_pos in tree[pos]:
        if not next_pos == parent:
            dfs(next_pos,pos,counter[pos])

dfs(1,0,0)

#print(counter)

print(" ".join([str(i) for i in counter[1:]]))
n = int(input())

for i in range(n, 1, -1):
  j = int(i ** 0.5)
  if int(j) ** 2 == i:
    break
print(i)


### FIXED CODE ###

n = int(input())

for i in range(n, 0, -1):
  j = int(i ** 0.5)
  if int(j) ** 2 == i:
    break
print(i)
import sys
N = int(input())
H = input().split()

count = 0
max = 0
flag = []
for i in (range(int(N)-1)):
  if(int(H[i]) >= int(H[i+1])):
    flag.append(i)
  else:
    continue

H.append(10000000000)

for i in flag:
  for j in range(i,int(N)):
    if(max > int(N) - i):
      count = j - i
      break
    
    if(max > int(N) - j):
      count = j - i 
      break

    if(int(H[j]) >= int(H[j+1])):
      continue
    else:
      count = j - i
      break

  if (max < count):
    max = count
    count = 0

print(max)
~              

### FIXED CODE ###

n = int(input())
L = list(map(int,input().split()))
 
count = 0
mcount = 0
for i in range(1,n):
      if L[i - 1] >= L[i]:
            count += 1
            if count >= mcount:
                  mcount = count
      else:
            count = 0
print(mcount)
H,W=map(int,input().split())
S=[input() for _ in range(H)]
Ans = 'Yes'
for i in range (H):
  for j in range (W):
    if S[i][j]=='#':
      if S[max(0,i-1)][j]=='#'or [min(i+1,W)][j]=='#'or[i][max(0,j-1)]=='#'or[i-1][min(j+1,H)]=='#':
        continue
      else:
        Ans = 'No'
  print(Ans)
  

### FIXED CODE ###

H,W=map(int,input().split())
S=[input() for _ in range(H)]
ans='Yes'
for i in range (H):
  for j in range (W):
    if S[i][j]=='#':
      if S[max(0,i-1)][j]!='#' and S[min(i+1,H-1)][j]!='#' and S[i][max(0,j-1)]!='#' and S[i][min(j+1,W-1)]!='#':
        ans='No'
        break
print(ans)
S = input()
s = S[::-1]

cnt = [0]*2019
s[0] = 1
number = 0
d = 1

for i in s:
  number += int(i)*d
  cnt[number % 2019] += 1
  d *= 10
  d = d % 2019

ans = 0
for i in cnt:
ans += i*(i-1) // 2

print(ans)

### FIXED CODE ###

S = input()
s = S[::-1]

cnt = [0]*2019
cnt[0] = 1
number = 0
d = 1

for i in s:
  number += int(i)*d
  cnt[number % 2019] += 1
  d *= 10
  d = d % 2019

ans = 0
for i in cnt:
  ans += i*(i-1) // 2

print(ans)
l,r = map(int,input().split())
L = l%2019
R = r%2019  #2019 = 3*673
N = r-l+1

if N >= 2019 or L>R:
    print(0)
else:
    ans = l*(l+1)%2019
    for i in range(L,R):  #この時点でL<Rは決定済み
        for j in range(i+1,R+1):
            if (i*j)%2019 < ans:
                ans = (i*j)%2019
                if ans == 0:
                    break
        if ans == 0:
            break

print(ans)

### FIXED CODE ###

l,r = map(int,input().split())
L = l%2019
R = r%2019  #2019 = 3*673
N = r-l+1

if N >= 2019 or L>R:
    print(0)
else:
    ans = l*(l+1)%2019
    for i in range(L,R):  #この時点でL<Rは決定済み
        for j in range(i+1,R+1):
            ans = min(ans,(j*i)%2019)
        if ans == 0:
            break
    print(ans)
N=int(input())
l=[0]*10

for i in range(1,N+1):
  if str(i[0])==str(i[-1]):
    l[int(str(i[0]))]+=1

ans=0
for i in range(l):
  ans+=i*i
print(ans)

### FIXED CODE ###

N=int(input())
l=[[0]*10 for i in range(10)]


for i in range(1,N+1):
  l[int(str(i)[0])][int(str(i)[-1])]+=1

ans=0
for i in range(10):
  for j in range(10):
    ans+=l[i][j]*l[j][i]
  
print(ans)
import numpy as np

def count_pair(x):
    cnt = 0
    cnt += (n-np.searchsorted(A, x//A_nega, side='right')).sum()
    if x > 0:
        cnt += len(A_zero)*n
    cnt += np.searchsorted(A, -(-x//A_posi), side='left').sum()
    cnt = (cnt-(A**2 < x).sum())//2
    return cnt

n, k = map(int, input().split())
* A, = map(int, input().split())
A = np.array(A)
A = np.sort(A)
A_posi = A[A > 0]
A_zero = A[A == 0]
A_nega = A[A < 0]
inf = 10**18+1
l, r = -inf, inf
while r - l > 1:
    c = (l + r) // 2
    if count_pair(c) < K:
        l = c
    else:
        r = c
print(l)


### FIXED CODE ###

import numpy as np


def count_pair(x):
    # A内のペアで積がxより小さいものの個数
    # まず(i,j)と(j,i)を重複して数える
    cnt = 0
    # A[i]<0なる各iに対してA[j]>x/A[i]なるjの個数
    cnt += (N-np.searchsorted(A, x//A_nega, side='right')).sum()
    if x > 0:
        # 各iに対してA[j]=0なるjの個数
        cnt += len(A_zero)*N
    # A[i]>0なる各iに対してA[j]<x/A[i]なるjの個数
    cnt += np.searchsorted(A, -(-x//A_posi), side='left').sum()
    # i=jを除いてから2で割る
    cnt = (cnt-(A**2 < x).sum())//2
    return cnt


# count_pair(x)<Kをみたすxの最大値を二分探索で求める
N, K = map(int, input().split())
* A, = map(int, input().split())
A = np.array(A)
A = np.sort(A)
A_posi = A[A > 0]
A_zero = A[A == 0]
A_nega = A[A < 0]
inf = 10**18+1
l, r = -inf, inf
while r - l > 1:
    c = (l + r) // 2
    if count_pair(c) < K:
        l = c
    else:
        r = c
print(l)
a,b = map(int, raw_input().split())
d = a / b
r = a % b
f = float(a) / float(b)
print " ".join([d, r, f])

### FIXED CODE ###

a,b = map(int, raw_input().split())
d = a / b
r = a % b
f = float(a) / float(b)
print " ".join([str(d), str(r), str('%.5f' % f)])
N=int(input())
p=10**9+7

def primeryNum(n):
    n_=int(n**0.5)
    ary=list(range(n+1))
    ary[1]=0 
    for a in ary:
        if a>n_: break
        elif a==0: continue
        
        for i in range(a*2,n+1,a):
            ary[i]=0           
    return ary

primeryN=primeryNum(N)
divN=[0]*N
for pn in primeryN:
    if pn==0:
        continue
    i=1
    cnt=0
    while (pn**i<N):
        cnt+=(N//pn**i)
        i+=1
    divN[pn]=cnt

ans=1
for d in divN:
    if d==0:
        continue
    ans=(ans*(d+1))%p
print(ans)

### FIXED CODE ###

N=int(input())
p=10**9+7

def primeryNum(n):
    n_=int(n**0.5)
    ary=list(range(n+1))
    ary[1]=0 
    for a in ary:
        if a>n_: break
        elif a==0: continue
        
        for i in range(a*2,n+1,a):
            ary[i]=0           
    return ary

primeryN=primeryNum(N)

divN=[0]*(N+1)
for pn in primeryN:
    if pn==0:
        continue
    # print(pn)
    i=1
    cnt=0
    while (pn**i<=N):
        cnt+=(N//pn**i)
        i+=1
    divN[pn]=cnt

# print(divN)
ans=1
for d in divN:
    if d==0:
        continue
    ans=(ans*(d+1))%p
print(ans)
n, m = map(int, input().split(" "))
nac = 0
npe = 0
cp = 0
is_ac = [False]*n
np_list = [0]*n
for i in range(m):
  p_s, s = input().split(" ")
  p = int(p_s)-1
  cis_ac = is_ac[p]
  
  if cis_ac:
    continue
  if s == "AC":
    nac += 1
    is_ac[p]=True
  else:
    np_list[p] += 1

for a in is_ac:
  if a:
    npe += np_list[a]
print(str(nac)+" "+str(npe))


### FIXED CODE ###

n, m = map(int, input().split(" "))
nac = 0
npe = 0
cp = 0
is_ac = [False]*n
np_list = [0]*n
for i in range(m):
  p_s, s = input().split(" ")
  p = int(p_s)-1
  cis_ac = is_ac[p]
  
  if cis_ac:
    continue
  if s == "AC":
    nac += 1
    is_ac[p]=True
  else:
    np_list[p] += 1

for i, a in enumerate(is_ac):
  if a:
    npe += np_list[i]
print(str(nac)+" "+str(npe))
n = int(input())
a = list(map(int, input().split()))

dp = [0] * n
dp[0] = 0
dp[1] = abs(a[0] - a[1])
dp[2] = dp[0]
for i in range(2, n):
  dp[i] = min(dp[i-2] + abs(a[i-2] - a[i]) , d[i - 1] + abs(a[i - 1] - a[i]))

print(dp[n - 1])  

### FIXED CODE ###

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

dp = [0] * n
dp[0] = 0
dp[1] = abs(a[0] - a[1])

for i in range(2, n):
  dp[i] = min(dp[i-2] + abs(a[i-2] - a[i]) , dp[i - 1] + abs(a[i - 1] - a[i]))

print(dp[n - 1])
#python3

def main():
    n, q = map(int, input().split())
    to = [[] for _ in range(n)]
    for _ in range(n-1):
        a, b = map(lambda x: int(x)-1, input().split())
        to[a].append(b)

    node = [0 for _ in range(n)]
    for _ in range(q):
        p, x = map(int, input().split())
        p -= 1
        node[p] += x  
    def dfs(v, p=-1):
        for u in to[v]:
            if u == p:
                continue
            else:
                node[u] += node[v]
                dfs(u, v)
    dfs(0)
    for i in range(n):
        if i == n-1:
            print(node[i])
        else:
            print(node[i], end=' ')
main()

### FIXED CODE ###

#python3
from collections import deque 
def main():
    n, q = map(int, input().split())
    to = [[] for _ in range(n)]
    for _ in range(n-1):
        a, b = map(lambda x: int(x)-1, input().split())
        to[a].append(b)
        to[b].append(a)

    node = [0 for _ in range(n)]

    for _ in range(q):
        p, x = map(int, input().split())
        node[p-1] += x

    dq = deque() 
    dq.append(0)
    done = [0 for _ in range(n)]
    done[0] = 1
    while len(dq) > 0:
        x = dq.popleft()
        for i in to[x]:
            if done[i] == 1:
                continue
            node[i] += node[x]
            done[i] = 1 
            dq.append(i)

    for i in range(n):
        print(node[i]) if i == n-1 else print(node[i], end=' ')
main()
from collections import defaultdict

def dfs(graph, start):
    stack = [start]
    visited = []
    while stack:
        label = stack.pop(0)
        if label not in visited:
            visited.append(label)
            stack = graph.get(label, []) + stack
    return visited
  
tree = defaultdict(list)
N,Q = map(int, input().split())

lst1 = [list(map(int, input().split())) for i in range(N-1)]
lst2 = [list(map(int, input().split())) for i in range(Q)]
for i in range(N):
  dict(tree)[i+1] = []
for i in lst1:
  tree[i[0]].append(i[1])
ans = [0] * N
memo = {}
for i in lst2:
  start = i[0]
  visited = []
  if (start == 1):
      ans = list(map(lambda x: x + i[1], ans))
  else:
    if start not in memo.keys():
      memo[start] = dfs(dict(tree), start)
    for j in memo[start]:
      if (start <= j):
        ans[j-1] += i[1]
print(" ".join(list(map(str,ans))))

### FIXED CODE ###

a = int(input())

s = input()
ans = s
if (a < 3200):
  ans = 'red'
print(ans)
a, b = map(int, input().split())
if (a*b)%2 ==0:
  print("Even")
  else:
    print("Odd")


### FIXED CODE ###

a,b = map(int, input().split())
if a*b%2 == 1:
  print('Odd')
else:
  print('Even')
from math import gcd

def getMultiCount(start, end, times):
    if end < times: return 0
    s = start-(start%times)
    if s != start: s += times
    e = end-(end%times)
    if s > e: return 0
    return ((e-s)//times)+1
    
def answer(a, b, c, d):
    cCount = getMultiCount(a, b, c)
    dCount = getMultiCount(a, b, d)
    cdCount = getMultiCount(a, b, c*d//gcd(c,d))
    return (b-a+1)-(cCount + dCount - cdCount)

a, b, c, d = map(int, input().split())
print(answer(a, b, c, d))

### FIXED CODE ###

from fractions import gcd
# def gcd(x, y):
#     while(y != 0):
#         temp = y
#         y = x%y
#         x = temp
#     return y

def getMultiCount(start, end, times):
    if end < times: return 0
    s = start-(start%times)
    if s != start: s += times
    e = end-(end%times)
    if s > e: return 0
    return ((e-s)//times)+1
    
def answer(a, b, c, d):
    cCount = getMultiCount(a, b, c)
    dCount = getMultiCount(a, b, d)
    cdCount = getMultiCount(a, b, c*d//gcd(c,d))
    return (b-a+1)-(cCount + dCount - cdCount)

a, b, c, d = map(int, input().split())
print(answer(a, b, c, d))
N = input()
a = [input() for i in range(N)]
b = [0, 0, 0]
for i in a:
	j = 0
	while j < 3:
		if i > b[j]:
			b.insert(j, i)
			break
		j += 1

for i in b[:3]:
	print i

### FIXED CODE ###

import sys

a = []
for line in sys.stdin:
    a.append(int(line))
b = [0, 0, 0]
for i in a:
	j = 0
	while j < 3:
		if i > b[j]:
			b.insert(j, i)
			break
		j += 1

for i in b[:3]:
	print i
N = int(input())
A = list(map(int,input().split()))
A.insert(0,0)
A.append(0)
dif = []
for i in range(N + 1):
	dif.append((abs(A[i+1] - A[i])))

temp_sum = sum(dif)
for i in range(N):
	print(sum - dif[i] - dif[i+1] + abs(A[i+2] - A[i]))

### FIXED CODE ###


N = int(input())
A = list(map(int,input().split()))
A.insert(0,0)
A.append(0)
dif = []
for i in range(N + 1):
	dif.append((abs(A[i+1] - A[i])))

temp_sum = sum(dif)
for i in range(N):
	print(temp_sum - dif[i] - dif[i+1] + abs(A[i+2] - A[i]))
from collections import defaultdict
from operator import sub

def main():
    N = int(input())
    balls = [tuple(map(int,input().split())) for _ in range(N)]
    d = defaultdict(int)
    for i in range(N):
        for j in range(N):
            if i == j:
                continue
            d[tuple(map(sub, balls[i], balls[j]))] += 1
    try:
        mmax = max(d.values())
        mmax = int(N - mmax)
        print(mmax)
    except RuntimeError:
        print(100)


if __name__ == '__main__':
    main()

### FIXED CODE ###

from collections import defaultdict
from operator import sub

def main():
    N = int(input())
    balls = [tuple(map(int,input().split())) for _ in range(N)]
    d = defaultdict(int)
    for i in range(N):
        for j in range(N):
            if i == j:
                continue
            d[tuple(map(sub, balls[i], balls[j]))] += 1
    try:
        mmax = N - max(d.values(), default=0)
        print(mmax)
    except ValueError:
        print(100)

if __name__ == '__main__':
    main()
a = map(int, raw_input().split())
print ,a[0]*a[1],2*a[0]+2*a[1]

### FIXED CODE ###

a = map(int, raw_input().split())
print a[0]*a[1],2*a[0]+2*a[1]
n,k = map(int,input().split())


import math
i = 1

while i <= k:
  x = int(math.factorial(n-k+i)/((math.factorial(n-k))*(math.factorial(i))))
  print(int(x%((10**9) + 7)))
  i += 1

### FIXED CODE ###

import math
 
def combination_count(n,k):
    if k > n or k < 0:
        return 0
    if n == 0 or k == 0:
        return 1
    
    s = math.factorial(n)
    t = math.factorial(k)
    u = math.factorial(n-k)
    
    return s//(t*u)
    
n,k = map(int,input().split())
 
mod = 10**9 + 7
 
for i in range(1,k+1):
    x = combination_count(n-k+1,i) * combination_count(k-1, i-1)
    print(x%mod)
n=input("east_west road:")
print(n)
m=input("north_south road:")
print(m)
block =(int(n)-1) * (int(m)-1)
print(block) 

### FIXED CODE ###

n,m = list(map(int,input().split()))
print((n-1)*(m-1))
N = int(input())
P = list(map(int, input().split()))
cnt = 1
for i in range(1,N):
    if P[i] < min(P[0:i]): cnt += 1
print(cnt)

### FIXED CODE ###

N, M = map(int, input().split())
if N == M:
    print('Yes')
else:
    print('No')
N=int(input())
d=[int(input().sprit())]
d.sort()
print(d[N]-d[N-1])

### FIXED CODE ###

N=int(input())
x=int(N/2)
d=[int(x) for x in (input().split())]
d.sort()
print(d[x]-d[x-1])
N=int(input())
l=list(map(int,input().split()))

a='Yes'
for i in range(N-1):
  if a[i]=a[i+1]:
    continue
  elif a[i]<a[i+1]:
    a[i+1]-=1
  else:
    a='No'
    
print(a)

### FIXED CODE ###

n = int(input())
h = list(map(int, input().split()))
 
before = 0
result = 'Yes'
for i in range(len(h)):
    if i == 0:
        before = h[i] - 1
    else:
        if before < h[i]:
            before = h[i] - 1
        elif before == h[i]:
            before = h[i]
        else:
            result = 'No'
print(result)
A,B = input().split()

print(int(int(A)*round(float(b)*100)//100))

### FIXED CODE ###

a, b = map(str, open(0).read().split())
print(int(a)*int(b[:-3]+b[-2:]) // 100)
N = int(input())
a = str(N)[0]+"0"
if N%2==1:
  print(0)
else:
  if N >= 24:
    print(int(a)**(len(str(N))-1)+25*10**(len(str(N))-3)-5)
  else:
    print(int(a)**(len(str(N))-2))

### FIXED CODE ###

N = int(input())
num = 10
cnt = 0
if N%2!=0:
  print(0)
  exit()
for i in range(1, N+1):
  cnt += N//num
  num = num*5
  if num > N:
    break
print(cnt)
import numpy as np

N = int(input())
M = int(input())
A = np.array(list(map(int, input().split())))
Needed = np.sum(A)
if Needed > N:
    print(-1)
else:
    print(N - Needed)

### FIXED CODE ###

import numpy as np

N = int(input().split()[0])
A = np.array(list(map(int, input().split())))
Needed = np.sum(A)
if Needed > N:
    print(-1)
else:
    print(N - Needed)
a, b, c = list(map(int, input().split()))
print('Yes' if 2 * Decimal(math.sqrt(a*b)) < c - a - b else 'No')

### FIXED CODE ###

from decimal import *
import math
a, b, c = list(map(int, input().split()))
print('Yes' if c - a - b> 0 and 4*a*b < (c - a - b)**2 else 'No')
n = int(input())
a = list(map(int, input().split()))
q = int(input())
m = list(map(int, input().split()))

def f(i, m):
    if m == 0:
        return True
    elif i >= n:
        return False
    elif f(i+1, m):
        return True
    elif f(i+1, m-a[i]):
        return True

for k in m:
    print('yes' if f(0, k) else 'no')


### FIXED CODE ###

n = int(input())
a = list(map(int, input().split()))
q = int(input())
m = list(map(int, input().split()))
memory = [[-1 for i in range(max(m)+1)]for j in range(n)]

def f(i, m):
    if m == 0:
        return 1
    elif i >= n:
        return 0
    elif memory[i][m] != -1:
        return memory[i][m]
    elif m - a[i] >= 0:
        res0 = f(i+1, m)
        res1 = f(i+1, m-a[i])
        if res0 or res1:
            memory[i][m] = 1
            return 1
        else:
            memory[i][m] = 0
            return 0
    else:
        res = f(i+1, m)
        memory[i][m] = res
        return res

for k in m:
    print('yes' if f(0, k) else 'no')
s=input()
if s[0]==s[1] or s[1]==s[2] or s[2]==s[3] or s[3]==s[4]:
    print('Bad')
else:
    print('Good')

### FIXED CODE ###

s=input()
if s[0]==s[1] or s[1]==s[2] or s[2]==s[3]:
    print('Bad')
else:
    print('Good')
x, n = map(int, input().split())
if n == 0:
  print(x)
else:
  p = list(map(int, input().split()))
  p.sort()
  p1 = {i for i in range(p[0],p[-1]+1)}
  p = set(p)
  p2 = p1 - p
  p2 = list(p2)
  absv = x
  for i in range(len(p2)):
    if absv > abs(x - p2[i]):
      absv = abs(x - p2[i])
      value = x - p2[i]
  print(x - value)

### FIXED CODE ###

x, n = map(int, input().split())
if n == 0:
  print(x)
else:
  p = list(map(int, input().split()))
  absv = x
  value = x
  for i in range(-1, 102):
    if i in p:
      pass
    else:
      if absv > abs(x - i):
        absv = abs(x - i)
        value = x - i
  print(x - value)
1 a = int(input())
  2 s = input()
  3
  4
  5 if a < 3200 :
  6     print('red')
  7 else:
  8     print(s)

### FIXED CODE ###

a = int(input())
s = input()

if a < 3200 :
    print('red')
else:
    print(s)
X,Y= (int(i) for i in input().split())
x=X
i=1
while(x<=Y):
    x=2*x
    i+==1
print(i)

### FIXED CODE ###

X,Y= (int(i) for i in input().split())
x=X
i=0
while(x<=Y):
    x=2*x
    i+=1
print(i)