Harryxun/sft_time huggingface dataset:
### BUGGY CODE ###

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])

    if arr==[]:
        arr.append([n, 1])

    return arr

N = int(input())
ans = 0
B = N
for z in range(2, int(N**(1/2))+1):
    if B == 1:
        break
    if B < z:
        break
    cnt = len(factorization(z))
    if cnt == 1 and B % z == 0:
        B = B // z
        #print(z)
        ans += 1

if(N == 1):
    print(0)
elif(N != 1 and ans == 0):
    print(1)
else:
    print(ans)

### FIXED CODE ###

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])

    if arr==[]:
        arr.append([n, 1])

    return arr

N = int(input())
ans = 0

A = factorization(N)

for x in A:
    e = x[1]
    for y in range(1,N):
        if e >= y:
            e -= y
            ans += 1
        else:
            break

print(ans)
### BUGGY CODE ###

#bfs 
#0#000  1#100 1#120 1#123
#00000  01010 21212 21212
#000#0  001#1 021#1 321#1
#000#0  001#1 021#1 321#1

from collections import deque

h,w = map(int,input().split())
lis = [input() for x in range(h)]

vy = [0,0,1,-1]
vx = [1,-1,0,0]

reached = [[-1]*w for x in range(h)]
def bfs(bk_lis):
    global ans
    for i in bk_lis:
        q = deque([i])
        reached[i[0]][i[1]]=0
        while q:
            y,x = q.popleft()
            for dy,dx in zip(vy,vx):
                ny,nx = y+dy,x+dx
#                print(ny,nx)
                if not(0<=ny<h and 0<=nx<w):
                    continue#範囲の確認
                if  reached[ny][nx]==-1 or reached[ny][nx]>reached[y][x]+1:
                    reached[ny][nx] = reached[y][x]+1
                    q.append([ny,nx])
#        print(reached)
bk_lis = []
ans=0
for y in range(h):
    for x in range(w):
        if lis[y][x] == '#':
            bk_lis.append([y,x])
#print(bk_lis)
bfs(bk_lis)
for y in reached:
    ans = max(max(y),ans)
#for x in reached:
#    print(x)
print(ans)


### FIXED CODE ###

#bfs 
#0#000  1#100 1#120 1#123
#00000  01010 21212 21212
#000#0  001#1 021#1 321#1
#000#0  001#1 021#1 321#1

from collections import deque

h,w = map(int,input().split())
lis = [input() for x in range(h)]

vy = [0,0,1,-1]
vx = [1,-1,0,0]

reached = [[-1]*w for x in range(h)]
def bfs(bk_lis):
    q = deque()
    for i in bk_lis:
        q.append(i)
        reached[i[0]][i[1]]=0
    while q:
        y,x = q.popleft()
        for dy,dx in zip(vy,vx):
            ny,nx = y+dy,x+dx
#                print(ny,nx)
            if not(0<=ny<h and 0<=nx<w):
                continue#範囲の確認
            if  reached[ny][nx]==-1 or reached[ny][nx]>reached[y][x]+1:
                reached[ny][nx] = reached[y][x]+1
                q.append([ny,nx])
#        print(reached)
bk_lis = []
ans=0
for y in range(h):
    for x in range(w):
        if lis[y][x] == '#':
            bk_lis.append([y,x])
#print(bk_lis)
bfs(bk_lis)
for y in reached:
    ans = max(max(y),ans)
#for x in reached:
#    print(x)
print(ans)
### BUGGY CODE ###

from math import inf

n, k = map(int, input().split())
a = [int(i) for i in input().split()]
dp = [inf for _ in range(n)]
dp[0] = 0
for i in range(1, n):
    for j in range(1, k + 1):
        if i - j >= 0:
            dp[i] = min(dp[i], abs(a[i] - a[i - j]) + dp[i - j])

print(dp[-1])


### FIXED CODE ###

from math import inf

n, k = map(int, input().split())
a = [int(i) for i in input().split()]
dp = [inf for _ in range(n)]
dp[0] = 0
for i in range(1, n):
    for j in range(1, k + 1):
        if i - j >= 0:
            dp[i] = min(dp[i], abs(a[i] - a[i - j]) + dp[i - j])
        else:
            break

print(dp[-1])
### BUGGY CODE ###

from collections import Counter


def factorization(n):
    arr = Counter()
    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[i] = cnt

    if temp != 1:
        arr[temp] = 1

    if len(arr.keys()) == 0 and n != 1:
        arr[n] = 1

    return arr


N, M = map(int, input().split())
primes = factorization(M)
primeList = list(primes.elements())

ans = 1
for i in range(2 ** len(primeList)):
    t = 0
    x = 1
    while (i >> t) > 0:
        d = primeList[t] if (i >> t) & 1 else 1
        x *= d
        t += 1
    if M // x >= N:
        ans = max(ans, x)

print(ans)


### FIXED CODE ###

from collections import Counter
import sys
sys.setrecursionlimit(10 ** 6)


def factorization(n):
    arr = Counter()
    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[i] = cnt

    if temp != 1:
        arr[temp] = 1

    if len(arr.keys()) == 0 and n != 1:
        arr[n] = 1

    return arr


def dfs(i, x):
    global N, M, ans
    if i == len(primeKeys):
        if M // x >= N:
            ans = max(ans, x)
    else:
        for j in range(primes[primeKeys[i]] + 1):
            nx = x * (primeKeys[i] ** j)
            if M // nx >= N:
                dfs(i + 1, nx)
            else:
                break


N, M = map(int, input().split())
primes = factorization(M)
# primeList = list(primes.elements())
primeKeys = list(primes.keys())

ans = 1
dfs(0, 1)

print(ans)
### BUGGY CODE ###

#!/usr/bin/env python3
# -*- coding: utf-8 -*-


def main():
    N = int(input())
    A = list(map(int, input().split()))
    ans = 1

    for a in A:
        ans *= a
        if a == 0:
            ans = 0
            break
        
    if ans > 10**18:
        print(-1)
    else:
        print(ans)


if __name__ == '__main__':
    main()

### FIXED CODE ###


def main():
    N = int(input())
    A = list(map(int, input().split()))
    ans = 1

    for a in A:
        if a == 0:
            ans = 0
            break
        elif ans < 10**18:
            ans *= a
        
    if ans > 10**18:
        print(-1)
    else:
        print(ans)


if __name__ == '__main__':
    main()
### BUGGY CODE ###

import math
import sys
import collections
import bisect
readline = sys.stdin.readline


def main():
    s = list(readline().rstrip())
    sumS = 0
    for i in range(len(s) - 1):
        if s[i] == 'B':
            sumS += s[i: len(s)].count('W')
    print(sumS)


if __name__ == '__main__':
    main()


### FIXED CODE ###

import math
import sys
import collections
import bisect
readline = sys.stdin.readline


def main():
    s = list(readline().rstrip())
    sumS = 0
    m = s.count('B')
    for i in range(len(s) - 1):
        if s[i] == 'B':
            sumS += (len(s) - m) - i
            m -= 1
    print(sumS)


if __name__ == '__main__':
    main()
### BUGGY CODE ###

N = int(input())
a = []
c = 0
for i in range(N):
    s = sorted(input())
    c += a.count(s)
    a.append(s)
print(c)

### FIXED CODE ###

from collections import defaultdict
from math import factorial
N = int(input())
d = defaultdict(int)
for i in range(N):
    s = ''.join(sorted(input()))
    d[s] += 1
t = 0
for c in d.values():
    if 1 < c:
        t += c * (c-1) // 2
print(t)
### BUGGY CODE ###

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

def gcd2(a, b, c):
	aa = gcd(a,b)
	return gcd(aa,c)

n=int(input())
N=list(range(1,n+1))
print(sum([gcd2(a,b,c) for a,b,c in [[a, b, c] for a in N for b in N for c in N]]))

### FIXED CODE ###

import math

N = int(input())
 
ans = 0
for a in range(1, N + 1):
    for b in range(1, N + 1):
        tmp = math.gcd(a, b)
        for c in range(1, N + 1):
            ans += math.gcd(tmp, c)
print(ans)
### BUGGY CODE ###

s = input()
ans = 0
while "ABC" in s:
  ans += s.count("ABC")
  s = s.replace("ABC", "BCA")
print(ans)

### FIXED CODE ###

import re

s = input()
ans = 0
s = s.replace("BC", "D")
L = re.split('[BC]', s)
for i in L:
  k = len(i)
  temp = 0
  for j in range(k):
    if i[k-1-j] == "D":
      temp += 1
    else:
      ans += temp
print(ans)
### BUGGY CODE ###

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

for i in A:
    if i in dic:
        dic[i] += 1
    else:
        dic[i] = 1

for i in range(Q):
    b, c = list(map(int, input().split()))
    if b in dic:
        if c in dic:    
            dic[c] += dic.pop(b)
        else:
            dic[c] = dic.pop(b)
    ans = 0
    for num in dic:
        ans += num * dic[num]
    print(ans)

### FIXED CODE ###

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

for i in A:
    if i in dic:
        dic[i] += 1
    else:
        dic[i] = 1

ans = 0
for num in dic:
    ans += num * dic[num]

for i in range(Q):
    b, c = list(map(int, input().split()))
    x = 0
    if b in dic:
        x = dic.pop(b)
        if c in dic:    
            dic[c] += x
        else:
            dic[c] = x
    ans += x * (c-b)
    print(ans)
### BUGGY CODE ###

S = list(input().strip())
length = len(S)

def checkValue():
    count = 0
    for i in range(length):
        group = ""
        for j in range(i, length):
            group += S[j]
            if int(group) % 2019 == 0:
                count += 1
    print(count)
checkValue()
    


### FIXED CODE ###

import numpy as np
#S = list(input().strip())
#length = len(S)
#op = np.asarray(S)

def solution():
    S = input()
    N = len(S)
    num = [0] * 2019
    num[0] = 1
    c, ans, dgt = 0, 0, 1
    for i in range(N-1, -1, -1):
        c = (c + int(S[i]) * dgt) % 2019
        dgt *= 10
        dgt %= 2019
        ans += num[c]
        num[c] += 1
        
    print(ans)

solution()



def sample():
    x = -1
    count = 0
    for i in op:
        x += 1
        group = ""
        for j, name in enumerate(op, x):
            group += name
            if int(group) % 2019 == 0:
                count += 1
    print(count)

def checkValue():
    count = 0
    for i in range(length):
        group = ""
        for j in range(i, length):
            group += op[j]
            if int(group) % 2019 == 0:
                count += 1
    print(count)
#checkValue()
### BUGGY CODE ###

from heapq import heapify, heappush, heappop

n, m = map(int, input().split())
ab = [list(map(int, input().split())) for _ in range(n)]

day = [[] for _ in range(10 ** 5)]
for a, b in ab:
    day[a - 1].append(-b)

work, ans = [], 0
for i in range(m):
    work+=day[i]
    heapify(work)
    if len(work) > 0:
        ans -= heappop(work)
print(ans)


### FIXED CODE ###

import sys
def input():
    return sys.stdin.readline()[:-1]
import heapq
n,m=map(int,input().split())
ab=[list(map(int,input().split())) for i in range(n)]
ab.sort(reverse=True)
h=[]
# print(ab)
ans=0
for i in range(m):
    while(ab and ab[-1][0]<=i+1):
        heapq.heappush(h,-ab[-1][1])
        ab.pop()
    if h:
        ans-=heapq.heappop(h)
    # print(ab)
    # print(ans)


print(ans)
### BUGGY CODE ###

N, M = map(int, input().split())
A = list(map(int, input().split()))
L = []
for i in range(M):
    L.append(list(map(int, input().split())))
for i in range(M):
    if L[i][1] <= min(A):
        pass
    else:
        for j in range(L[i][0]):
            A.append(L[i][1])
sA = sorted(A, reverse = True)
print(sum(sA[:N]))


### FIXED CODE ###

N, M = map(int, input().split())
A = list(map(int, input().split()))
K = [1] * N
L = list(zip(K,A))
for i in range(M):
	L.append(list(map(int, input().split())))
S = sorted(L, key = lambda x:x[1], reverse = True)
sum = 0
cnt = 0
for i in range(N):
	if N - cnt <= S[i][0]:
		sum += S[i][1] * (N - cnt)
		break
	else:
		sum += S[i][1] * S[i][0]
		cnt += S[i][0]
print(sum)
### BUGGY CODE ###

s = input()
start = len(s)

while s  != s.replace("01",""):
    s = s.replace("01","")

while s  != s.replace("10",""):
    s = s.replace("10","")
    
print(start-len(s))

### FIXED CODE ###

s = input()
zero = s.count("0")
one = s.count("1")

print(min(zero,one)*2)
### BUGGY CODE ###

import bisect
S=list(input())
T=list(input())
N=len(S)
TI={}
for i in range(N):
  s=S[i]
  if s in T:
    if s in TI:
      TI[s].append(i)
    else:
      TI[s]=[i]

i=-1
for t in T:
  if t not in TI:
    print(-1)
    exit()
  else:
    ni=TI[t][(bisect.bisect_right(TI[t],i%N))%len(TI[t])]
    if ni>i%N:
      i+=ni-i%N
    else:
      i+=N-i%N+ni
print(i+1)

### FIXED CODE ###

import bisect
S=list(input())
T=list(input())
sT=set(T)
N=len(S)
TI={}
for i in range(N):
  s=S[i]
  if s in sT:
    if s in TI:
      TI[s].append(i)
    else:
      TI[s]=[i]

i=-1
for t in T:
  if t not in TI:
    print(-1)
    exit()
  else:
    ni=TI[t][(bisect.bisect_right(TI[t],i%N))%len(TI[t])]
    if ni>i%N:
      i+=ni-i%N
    else:
      i+=N-i%N+ni
print(i+1)
### BUGGY CODE ###

# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline

#n,k,*a = map(int,read().split())
n, = map(int,readline().split())
vw = [(0,0)]+[tuple(map(int,readline().split())) for _ in range(n)]

A = 10
N = min(1<<A,n+1)

memo = [None for _ in range(N)]
L = 10**5+1
memo[0] = [0]*L

for i in range(1,N):
    m = memo[i>>1][:]
    v,w = vw[i]    
    for j in range(L-1,w-1,-1):
        if m[j] < m[j-w]+v:
            m[j] = m[j-w]+v
    memo[i] = m

q, = map(int,readline().split())
for _ in range(q):
    u,l = map(int,readline().split())

    dv = [0]
    dw = [0]
    while u >= N:
        dv += (vw[u][0]+v1 for v1 in dv)
        dw += (vw[u][1]+w1 for w1 in dw)
        u >>= 1
    
    ans = 0
    for v,w in zip(dv,dw):
        if w <= l:
            ans = max(ans,memo[u][l-w]+v)
    print(ans)

        


### FIXED CODE ###

# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline

#n,k,*a = map(int,read().split())

n, = map(int,readline().split())
vw = [[0,0]]+[list(map(int,readline().split())) for _ in range(n)]

def merge(av,aw,bv,bw):
    la,lb = len(aw),len(bw)
    rv = [0]*(la+lb)
    rw = [0]*(la+lb)
    ia = ib = 0
    for i in range(la+lb):
        if ib==lb or (ia < la and aw[ia] < bw[ib]):
            rv[i] = av[ia]
            rw[i] = aw[ia]
            ia += 1
        else:
            rv[i] = bv[ib]
            rw[i] = bw[ib]
            ib += 1
    return rv,rw

A = 10
N = min(1<<A,n+1)
memov = [[] for _ in range(N)]
memow = [[] for _ in range(N)]

memov[0] = [0]
memow[0] = [0]

#from itertools import acumulate
for i in range(1,N):
    v,w = vw[i]
    m2v = [v+v1 for v1 in memov[i>>1]]
    m2w = [w+w1 for w1 in memow[i>>1]]
    memov[i],memow[i] = merge(memov[i>>1],memow[i>>1],m2v,m2w)

    #memov[i] = list(accumulate(memov[i],max))
    for j in range(1,len(memov[i])):
        memov[i][j] = max(memov[i][j-1],memov[i][j])
    
def solve(lstv,lstw,dv,dw,l):
    ans = 0
    idx = len(lstw)-1
    #print(lstv,lstw,dv,dw,l)
    for v,w in zip(dv,dw):
        while idx >= 0 and lstw[idx] + w > l:
            idx -= 1
        if idx >= 0 and v+lstv[idx] > ans:
            ans = v+lstv[idx]
    print(ans)        
 
 

q, = map(int,readline().split())
for _ in range(q):
    u,l = map(int,readline().split())

    dv = [0]
    dw = [0]
    while u >= N:
        v,w = vw[u]
        m2v = [v+v1 for v1 in dv]
        m2w = [w+w1 for w1 in dw]
        dv,dw = merge(dv,dw,m2v,m2w)
        u >>= 1
    
    #for j in range(1,len(dv)):
    #    dv[j] = max(dv[j-1],dv[j])
    
    solve(memov[u],memow[u],dv,dw,l)

#print(memov)
#print(memow)
### BUGGY CODE ###

import sys, math


def solve_greedy(N, D, A, XH):
    ret = 0
    for i, (x, h) in enumerate(XH):
        if h <= 0:
            continue
        tmp = math.ceil(h / A)
        ret += tmp
        for j in range(i + 1, N):
            if XH[j][0] > x + 2 * D:
                break
            XH[j][1] -= A * tmp
    return ret


input = sys.stdin.readline
N, D, A = map(int, input().split())
XH = sorted([list(map(int, input().split())) for _ in range(N)], key=lambda x: x[0])
ans = solve_greedy(N, D, A, XH)
print(ans)


### FIXED CODE ###

import sys
import math
from collections import deque


def bisect(ng, ok, x, q):
    while (abs(ok - ng) > 1):
        mid = (ok + ng) // 2
        if q[mid][0] >= x:
            ok = mid
        else:
            ng = mid
    return ok


def solve_greedy(N, D, A, XH):
    ret = 0
    q = deque([(0, 0)])
    for i, (x, h) in enumerate(XH):
        if q[-1][0] < x:
            damaged = 0
        else:
            i = bisect(0, len(q) - 1, x, q)
            damaged = q[-1][1] - q[i - 1][1]
            # q = q[i-1:]
        if h <= damaged:
            continue
        tmp = math.ceil((h - damaged) / A)
        ret += tmp
        q.append((x + 2 * D, A * tmp + q[-1][1]))
    return ret


input = sys.stdin.readline
N, D, A = map(int, input().split())
XH = sorted([list(map(int, input().split()))
             for _ in range(N)], key=lambda x: x[0])
ans = solve_greedy(N, D, A, XH)
print(ans)
### BUGGY CODE ###

# coding: utf-8
# Your code here!
r , g , b , n = map(int,input().split())
ans = 0
R = -(-n//r)
G = -(-n//g)
for i in range(R+1):
    for j in range(G+1):
        if n-(r*i+g*j)>=0 and (n - (r*i+g*j)) % b ==0:
            ans += 1
print(ans)

### FIXED CODE ###

# coding: utf-8
# Your code here!
r , g , b , n = map(int,input().split())
ans = 0
R = -(-n//r)
G = -(-n//g)
for i in range(R+1):
    for j in range(G+1):
        su = n-r*i-g*j
        if n-r*i-g*j < 0:
            break
        else:
            if (su/b).is_integer():
                ans += 1
print(ans)
### BUGGY CODE ###

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

s = set()
for i in range(k):
    l, r = map(int, input().split())
    for i in range(l, r+1):
        s.add(i)

mod = 998244353
col = list(s)
counts = [0]*(n+1)
for i in range(1, n+1):
    for c in col:
        if c > i:
            break
        if c == i:
            counts[i] += 1
            counts[i] = counts[i] % mod
            continue
        else:
            counts[i] += counts[i-c]
            counts[i] = counts[i] % mod

print(counts[n-1] % mod)

### FIXED CODE ###

n, k = map(int, input().split())
# n, k = (2*10**5, 10)


ranges = []
for i in range(k):
    l, r = map(int, input().split())
    # f = (2 * 10 ** 5) // k
    # l, r = (f * i, f*(i+1))
    ranges.append((l, r))

mod = 998244353
counts = [0]*(n+1)
sum_dp = [0]*(n+2)
counts[0] = 1
sum_dp[1] = 1
for i in range(1, n+1):
    for r in ranges:
        left = max(0, i - r[1])
        right = max(0, i - r[0] + 1)
        counts[i] += (sum_dp[right] - sum_dp[left])
        counts[i] = counts[i] % mod
    sum_dp[i+1] = sum_dp[i] + counts[i]


print(counts[n-1] % mod)
### BUGGY CODE ###

import sys

input = sys.stdin.readline
n,m = map(int,input().split())
from collections import defaultdict
dic = defaultdict(list)

for _ in range(m):
    u,v = map(int,input().split())
    dic[u-1].append(v-1)

G = defaultdict(list)
def dfs(p, s, l):
    if l == 3:
        if s != p:
            G[s].append(p)
    else:
        for i in dic[p]:
            dfs(i, s, l+1)

for i in range(n):
    dfs(i, i, 0)
s,t = map(int,input().split())

# G[v]: 頂点vに隣接する頂点list
# N: 頂点数

from collections import deque
dist = [-1]*n
que = deque([s-1])
dist[s-1] = 0
while que:
    v = que.popleft()
    d = dist[v]
    for w in G[v]:
        if dist[w] > -1:
            continue
        dist[w] = d + 1
        que.append(w)
print(dist[t-1])

### FIXED CODE ###

import sys

input = sys.stdin.readline
n,m = map(int,input().split())
from collections import defaultdict
dic = defaultdict(list)

for _ in range(m):
    u,v = map(int,input().split())
    dic[u-1].append(v-1+n)
    dic[u - 1+n].append(v - 1 + 2*n)
    dic[u - 1+2*n].append(v - 1)

G = dic
s,t = map(int,input().split())

# G[v]: 頂点vに隣接する頂点list
# N: 頂点数

from collections import deque
dist = [-1]*(n*3)
que = deque([s-1])
dist[s-1] = 0
while que:
    v = que.popleft()
    d = dist[v]
    for w in G[v]:
        if dist[w] > -1:
            continue
        dist[w] = d + 1
        que.append(w)
print(dist[t-1]//3)
### BUGGY CODE ###

S = input()
Q = int(input())
f = ''
b = ''
r = False
for i in range(Q):
    q = input()
    if q[0] == '1':
        r = not r
    else:
        T, F, C = q.split()
        if (F == '1') ^ r:
            f = C + f
        else:
            b = b + C
S = f + S + b
S = ''.join(list(reversed(S))) if r else S
print(S)

### FIXED CODE ###

S = list(input())
Q = int(input())
f = list()
b = list()
r = False
for i in range(Q):
    q = input()
    if q[0] == '1':
        r = not r
    else:
        T, F, C = q.split()
        if (F == '1') ^ r:
            f.append(C)
        else:
            b.append(C)
if r:
    S = list(reversed(S + b)) + f
else:
    S = list(reversed(f)) + S + b

print(''.join(S))
### BUGGY CODE ###

N = int(input())
H = [int(i) for i in input().split()]

t = 0
if N >= 2:
  for i in range(N-1):
    if H[i] >= min(H[i+1:N]) + 2:
      t += 1
    
if t == 0:
  print("Yes")
else:
  print("No")

### FIXED CODE ###

N = int(input())
H = [int(i) for i in input().split()]

t = 0
s = 0
if N >= 2:
  for i in range(N-1):
    if H[i] > H[i+1]:
      t += 1
      if t == 2:
        s += 1
    if H[i] < H[i+1]:
      t = 0
    if H[i] >= H[i+1] +2:
      s += 1
if s == 0:
  print("Yes")
else:
  print("No")
### BUGGY CODE ###

n, k = map(int, input().split())
h = [int(i) for i in input().split()]

dp = [float('inf')]*n
dp[0] = 0

for i in range(1,n):
    for j in range(max(0,i-k),i):
        dp[i] = min(dp[i], dp[j]+abs(h[i]-h[j]) )

print(dp[-1])


### FIXED CODE ###

N, K = [int(i) for i in input().split()]
h = [int(i) for i in input().split()]

# dp=[0 for i in range(N)]
dp = [float("inf")]*(N)
dp[0] = 0
dp[1] = abs(h[1] - h[0])


for i in range(N-1):
  for j in range(1, min(K+1, N - i)):
    dp[i+j]=min(dp[i+j], dp[i]+ abs(h[i+j]-h[i]))
print(dp[N-1])
### BUGGY CODE ###

from bisect import bisect
N = int(input())
sides = sorted(map(int, input().split()))

ans = 0
for i in range(1, N - 1):
    for j in range(i + 1, N + 1):
        ans += N - j - bisect(sides, sides[-i] - sides[-j], hi=N-j)
print(ans)


### FIXED CODE ###

from bisect import bisect
N = int(input())
sides = sorted(map(int, input().split()))

ans = 0
for i in range(1, N - 1):
    for j in range(i + 1, N + 1):
        ans += N - j - bisect(sides, sides[-i] - sides[-j], hi=N-j)
print(ans)
### BUGGY CODE ###

mod = 10**9+7
n = int(input())
s = input()
d = {}
for i in list(s):
    if i in d:
        d[i] += 1
    else:
        d[i] = 1
dic = [j for i, j in d.items()]
result = 0
for i in range(1, 2**len(dic)):
    c = 1
    n = []
    num = i
    for j in dic:
        if num%2==1:
            c *= j
            c %= mod
            n.append(j)
        else:
            n.append(0)
        num >>= 1
    result += c
    result %= mod

print(result%mod)

### FIXED CODE ###

mod = 10**9+7
n = int(input())
s = input()
d = {}
for i in s:
    if i in d:
        d[i] += 1
    else:
        d[i] = 1
result = 1
for i, j in d.items():
    result = (result*(j+1))%mod

print((result-1)%mod)
### BUGGY CODE ###

N=int(input())
L=list(map(int,input().split()))
S=set(L)
ans=0

for s in S:
    tmp=L.count(s)
    if tmp>s:
        ans+=tmp-s
    elif tmp<s:
        ans+=tmp

print(ans)


### FIXED CODE ###

N=int(input())
L=list(map(int,input().split()))
S=set(L)
ans=0
dict={}

for s in S:
    dict[s]=0

for l in L:
    dict[l]+=1

for d in dict.items():
    num=d[0]
    amount=d[1]

    if amount>num:
        ans+=amount-num
    elif amount<num:
        ans+=amount

print(ans)
### BUGGY CODE ###

N = int(input())
L = list(map(int,input().split()))
ans = 0
for i in range(N):
    for j in range(i):
        for k in range(j):
            if L[i] < L[j]+L[k] and L[j] < L[i]+L[k] and L[k] < L[i]+L[j]:
                ans += 1
print(ans)

### FIXED CODE ###

from bisect import bisect_right, bisect_left

N = int(input())
L = list(map(int,input().split()))
L.sort()
ans = 0

for i in range(N-2):
    for j in range(i+1,N-1):
        a = L[i]
        b = L[j]
        left = abs(a-b)
        right = a+b
        q = max(j+1,bisect_left(L,right))
        w = max(j+1,bisect_right(L,left))
        ans += q-w
print(ans)