Problem:
 Score : 100 points    Problem Statement  A Hitachi string is a concatenation of one or more copies of the string hi .  For example, hi and hihi are Hitachi strings, while ha and hii are not.  Given a string S , determine whether S is a Hitachi string.      Constraints   The length of S is between 1 and 10 (inclusive).  S is a string consisting of lowercase English letters.         Input  Input is given from Standard Input in the following format:  S       Output  If S is a Hitachi string, print Yes ; otherwise, print No .        Sample Input 1 hihi      Sample Output 1 Yes  hihi is the concatenation of two copies of hi , so it is a Hitachi string.       Sample Input 2 hi      Sample Output 2 Yes       Sample Input 3 ha      Sample Output 3 No

Solution (Python):
s = input()


if s == "hi":
  print("Yes")
elif s == "hihi":
  print("Yes")
elif s == "hihihi":
  print("Yes")
elif s == "hihihihi":
  print("Yes")
elif s == "hihihihihi":
  print("Yes")
else:
  print("No")

Solution (Python):
from sys import stdin


def main():
    input = lambda: stdin.readline()[:-1]
    S = input()

    l = len(S)
    if l % 2:
        print('No')
        return
    elif l == 2:
        if S != 'hi':
            print('No')
            return

    for i in range(0, l - 2, 2):
        if S[i:i+2] != 'hi':
            print('No')
            break
    else:
        print('Yes')


main()

Solution (Python):
S = input()
flag = True
for i in range((len(S)+1)//2):
    if S[2*i:2*i+2] != 'hi':
        flag = False
if flag:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()

if len(s)%2 == 1:
    print("No")
    exit()

if s.count("hi")*2 == len(s):
    print("Yes")
else:
    print("No")

Solution (Python):
s=input()
if len(s)%2==0:
    for i in range(0,len(s)//2):
        if s[2*i]!="h" or s[2*i+1]!="i":
            print("No")
            break
            
    else:
        print("Yes")
else:
    print("No")

Solution (Python):
def main():
    s = input()
    while len(s) > 0:
        c = s[:2]
        
        if c != 'hi':
            print('No')
            return
        s = s[2:]
        
    print('Yes')
main()

Solution (Python):
s = input()

if len(s) % 2:
    print('No')
    exit()

for i in range(0, len(s)-1, 2):
    if s[i] != 'h' or s[i+1] != 'i':
        print('No')
        exit()

print('Yes')

Solution (Python):
a = input()
a = a.replace('hi', '')
if len(a) == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
a = "hi"
s = input()
n = 0
for i in range(1,6):
    if a*i==s:
        n = n+1
    else:
        pass
if n>=1:
    print("Yes")
else:
        print("No")

Solution (Python):
S = input()
is_hitachi = True
if len(S) %2 == 0:
    for i in range(0, len(S), 2):
        if not (S[i] == 'h' and S[i + 1] == 'i'):
            is_hitachi = False
    print('YNeos'[not is_hitachi::2])
else:
    print('No')

Solution (Python):
a = input()
if len(a) % 2 == 1:
  print("No")
else:
  answer = "Yes"
  for i in range(0, len(a), 2):
    if a[i:i+2] != "hi":
      answer = "No"
  print(answer)

Solution (Python):

S = input()


result = False
hi = "hi"
s = ""
for i in range(5):
    s += hi
    if S == s:
        result = True
        break


print("Yes" if result else "No")

Solution (Python):
h = input()

han = True

while han:
    if len(h) > 1:
        if h[0:2] == "hi":
            
            if len(h) == 2:
                break
            else:
                h = h[2:]
        else:
            han = False

    elif len(h) == 1:
        han = False
    else:
        han = True

if (han):
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
c = len(s)
if c % 2 == 1:
  print("No")
  exit()
c //= 2
hi = "hi" * c
if s != hi:
  print("No")
else:
  print("Yes")

Solution (Python):
import sys
stdin = sys.stdin
sys.setrecursionlimit(10**9)
ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
nn = lambda: list(stdin.readline().split())
ns = lambda: stdin.readline().rstrip()

s = ns()
s = list(s)

if len(s)%2 == 1:
	print('No')
	exit()

for i in range(0,len(s)//2,2):
	if s[i] != 'h' or s[i+1] != 'i':
		print('No')
		exit()

print('Yes')

Solution (Python):
s = str(input())
flag = 0
a = []
if(len(s)%2 != 0):
    print("No")
    exit()
else:
    for i in range(0,len(s),2):
        if(s[i] != "h" or s[i+1] != "i"):
            print("No")
            exit()
print("Yes")

Solution (Python):
if input() in ["hi", "hihi", "hihihi", "hihihihi", "hihihihihi"]:
	print("Yes")
else:
	print("No")

Solution (Python):
S = input()

if len(S) < 2:
    print('No')
    exit()

s = S.replace('hi', '')


print('Yes' if len(s) < 1 else 'No')

Solution (Python):



inp = input()
ln = len(inp)
if ln%2 or ln==0:
    print('No')

else:
    n = ln//2
    st = 'hi'*n
    if st == inp:
        print('Yes')
    else:
        print('No')

Solution (Python):
s=input()
f=True
if len(s)%2==0:
    for i,c in enumerate(s):
        if ("h" if i%2==0 else "i") != c:
            f=False
else:
    f=False
print("Yes" if f else "No")

Solution (Python):
S = input()

for i in range(6):
    if S == 'hi'*i:
        print('Yes')
        exit()
print('No')

Solution (Python):
a = input()
b = a.split("hi")
c = "".join(b)
if len(c) <= 0:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
for i in range(10):
    if S[0:2]=="hi":
        S = S[2:]
if len(S) != 0:
    print("No")
else:
    print("Yes")

Solution (Python):
s = input()

import re

if re.fullmatch('(hi)+', s):
  print('Yes')
else:
  print('No')

Solution (Python):
s = input()
flag = 0
if len(s) % 2 == 1:
  print('No')
else:
  for i in range(len(s)):
    if i % 2 == 0:
      if s[i] == 'h':
        flag += 1
    else:
      if s[i] == 'i':
        flag+= 1
  if flag == len(s):
    print('Yes')
  else:
    print('No')

Solution (Python):
H = True
ans = True
for c in input():
    if H and c != "h":
        ans = False
        break
    elif not H and c != "i":
        ans = False
        break
    H = not H

print("Yes" if ans and H else "No")

Solution (Python):
s=input()
n=len(s)
for i in range(n):
    if i%2==0 and s[i]!="h":
        print("No")
        break
    if i%2!=0 and s[i]!="i":
        print("No")
        break
else:
    if n%2==0:
        print("Yes")
    else:
        print("No")

Solution (Python):


S=input()

t=0
for i in range(5):
    if S=="hi"*(i+1) :
        t=1
        print("Yes")
        break
if t==0:
    print("No")

Solution (Python):
s=input()
if s=='hi':
    print('Yes')
elif s=='hihi':
    print('Yes')
elif s=='hihihi':
    print('Yes')
elif s=='hihihihi':
    print('Yes')
elif s=='hihihihihi':
    print('Yes')
else:
    print('No')

Solution (Python):

 
import math
import itertools
import sys
import copy

 







S = str(input())

if len(S)%2 == 1 :
  print ("No")
  exit()
else :
  c = len(S)//2
  st = ""
  for _ in range(c) :
    st += "hi"
  if S == st :
    print ("Yes")
  else :
    print ("No")

Solution (Python):
S=input()
c = 0
def judge(S):
    c = 0
    if len(S)==1:
        return 'No'
    for i in range(len(S)):
        if i%2==0:
            if S[i] =='h':
                c += 1
            else:
                return 'No'
        else:
            if S[i] =='i':
                c -=1
            else:
                return 'No'
    if c==0:
        return 'Yes'
    else:
        return 'No'
print(judge(S))

Solution (Python):
s = input()
r = 'Yes'
while s:
    if s[:2] == 'hi':
        s = s[2:]
    else:
        r = 'No'
        break
print(r)

Solution (Python):

import sys
def input(): return sys.stdin.readline().rstrip()
S = input()
rule = ['hi', 'hihi','hihihi','hihihihi','hihihihihi']
print('Yes' if S in rule else 'No')

Solution (Python):
s = input().replace("hi",'1')
for a in s:
  if a != '1':
    print("No")
    exit()
print("Yes")

Solution (Python):
N = input()
end = False

if len(N)%2 == 1:
  print("No")
  end = True

else:
  for i in range(len(N)):
    if i % 2 == 0:
      if N[i]!="h":
        print("No")
        end = True
        break
    else:
      if N[i] !="i":
        print("No")
        end = True
        break
        
if not end:
  print("Yes")

Solution (Python):
S = input()

ANS = ['hi', 'hihi', 'hihihi', 'hihihihi', 'hihihihihi']
if S in ANS:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()

S = s.split("hi")

if set(S) == {''}:
    print("Yes")
else:
    print("No")

Solution (Python):
s=input()
s0=[x=='h' for i,x in enumerate(s) if i%2==0]
s1=[x=='i' for i,x in enumerate(s) if i%2==1]
if len(s)%2==0 and all(s0) and all(s1):
  print('Yes')
else:
  print('No')

Solution (Python):
s = input()
flag = True
for i in range(0,len(s),2):
    if s[i:i+2] != 'hi':
        flag = False
if flag:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
print('Yes') if S == 'hi' or S == 'hihi' or S == 'hihihi' or S == 'hihihihi' or S == 'hihihihihi' else print('No')

Solution (Python):
import sys

S = input()

mypos = 0

while mypos < len(S):
    if S[mypos:mypos+2] == 'hi':
        mypos += 2
    else:
        print('No')
        sys.exit()
    
print('Yes')

Solution (Python):
s = input()
l = s[0::2]
m = s[1::2]
if set(l) == {'h'} and set(m) == {'i'} and len(s)%2==0:
    print('Yes')
else:
    print('No')

Solution (Python):
s = list(input())
c = 0
ans = 0
if len(s) == 1 and s[0] == "h":
    print("No")
elif s[-1] != "i":
    print("No")
else:
    for i in range(len(s)):
        if s[i] == "h" and c == 0:
            c = 1
            ans += 1
        elif s[i] == "i" and c == 1:
            c = 0
            ans += 1

    if ans == len(s):
        print("Yes")
    else:
        print("No")

Solution (Python):
s = input()

if len(s) %2 == 1:
  print("No")
  exit()
elif len(s)%2 ==0:
  num=0
  for i in range(0,len(s),2):
    if s[i] == "h":
      num +=1
    if s[i+1] =="i":
      num +=1
      
  if num ==len(s):
    print("Yes")
    exit()
    
print("No")

Solution (Python):

MOD = 10 ** 9 + 7
INFI = 10**10

import math

import itertools



import copy
from functools import lru_cache

def sosuhante(n):
    for k in range(2, int(math.sqrt(n))+1):
        if n% k ==0:
            return False
    return True
def cmb(n, r):
    if n - r < r: r = n - r
    if r == 0: return 1
    if r == 1: return n

    numerator = [n - r + k + 1 for k in range(r)]
    denominator = [k + 1 for k in range(r)]

    for p in range(2,r+1):
        pivot = denominator[p - 1]
        if pivot > 1:
            offset = (n - r) % p
            for k in range(p-1,r,p):
                numerator[k - offset] /= pivot
                denominator[k] /= pivot

    result = 1
    for k in range(r):
        if numerator[k] > 1:
            result *= int(numerator[k])

    return result

def kingaku(a,b,n):
    keta=len(str(n))
    return a*n+b*keta

def my_index(l, x, default=False):
    if x in l:
        return l.index(x)
    else:
        return default






def main():
    s=input()
    s=list(s)
    temp=0
    ans="Yes"
    for i in range(len(s)):
        if s[i]=="h" and temp==0:
            temp=1
        elif s[i]=="i" and temp==1:
            temp=0
        else:
            ans="No"
            break
    if len(s)%2!=0:
        ans="No"
    print(ans)


if __name__ == "__main__":
    main()

Solution (Python):
s = input()


length = len(s)//2
if len(s) % 2 != 0:
    print("No")
    exit(0)

tmp = 0
for i in range(0, len(s), 2):
    if s[i] == 'h' and s[i+1] == 'i':
        tmp += 1

if length == tmp:
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()

if len(s) % 2 == 1:
    print('No')
    exit()

for i in range(len(s))[::2]:
    if s[i]+s[i+1] != 'hi':
        print('No')
        exit()
else:
    print('Yes')

Solution (Python):
import sys
import numpy as np



s = input()

if len(s) % 2 != 0:
    print("No")
else:
    for i in range(0, len(s), 2):
        if (s[i:i+2] != "hi"):
            print("No")
            break
    else:
        print("Yes")

Solution (Python):
s = input()
if len(s) % 2:
    print("No")
else:
    if s == "hi" * (len(s) // 2):
        print("Yes")
    else:
        print("No")

Solution (Python):
s = ["hi","hihi","hihihi","hihihihi","hihihihihi"]
if input() in s:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input("")
k = 0
if len(S) % 2 == 1:
    print("No")
else:
    for i in range(0,len(S),2):
        if S[i:i+2] != "hi":
            print("No")
            k = 1
            break
    if k == 0:
        print("Yes")

Solution (Python):
S=input()

ans=False

if len(S)%2==0:
    if S=='hi':
        ans=True
    elif S=='hihi':
        ans=True
    elif S=='hihihi':
        ans=True
    elif S=='hihihihi':
        ans=True
    elif S=='hihihihihi':
        ans=True
    else:
        pass
else:
    pass

if ans==True:
    print('Yes')
else:
    print('No')

Solution (Python):

import copy
import random
import bisect 
import fractions 
import math
import sys
import collections

mod = 10**9+7
sys.setrecursionlimit(mod) 

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

S = str(input())

ans = 1
if len(S) % 2 == 0:
    for i in range(len(S)):
        if i % 2 == 0:
            if "h" == S[i]:
                pass
            else:
                ans = 0
        else:
            if "i" == S[i]:
                pass
            else:
                ans = 0
else:
    ans = 0

if ans:
    print("Yes")
else:
    print("No")

Solution (Python):
s =input()
if s == "hi":
    print ("Yes")
elif s== "hihi":
    print ("Yes")
elif s=="hihihi":
    print ("Yes")
elif s == "hihihihi":
    print ("Yes")
elif s =="hihihihihi":
    print ("Yes")
else:
    print("No")

Solution (Python):
S = input()
List = list(S)
ans = 1
h = 0
ii = 0

for i in range(len(List)):
  a = List[i]
  if a == "h":
    h = 1
    ii = 0
  elif h == 1 and a == "i":
    h = 0
    ii = 1
  else:
    ans = 0

if ans == 1 and ii == 1:
  print("Yes")
else:
  print("No")

Solution (Python):
s=input()
if len(s)%2==1:
    print("No")
    exit()
for i in range(0,len(s)-1,2):
    if not s[i:i+2]=="hi":
        print("No")
        exit()
print("Yes")

Solution (Python):
s=input()
if "hi"==s or "hihi"==s or "hihihi"==s or "hihihihi"==s or "hihihihihi"==s:
    print("Yes")
else:
    print("No")

Solution (Python):
import sys
s = input()
a = s.replace("hi","")
if len(a) == 0:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
t = ""
for _ in range(5):
  t += "hi"
  if t == S:
    print("Yes")
    exit()
print("No")

Solution (Python):
s = input()

ok_list = ["hi" * n for n in range(1, 6)]

if s in ok_list:
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()

def main(S):

    for i, s in enumerate(S):

        if i % 2 == 0:
            if s == 'h': continue
            else       : return "No"
        
        else:
            if s == 'i': continue
            else       : return "No"

    else: 
        if len(S) % 2 == 0:
            return "Yes"
        else:
            return "No"
    

if __name__ == "__main__":

    answer = main(S)
    print(answer)

Solution (Python):
s=input()

if (s == 'hi') or (s == 'hihi'):
    print('Yes')
elif (s == 'hihihi') or (s == 'hihihihi'):
    print('Yes')
elif (s == 'hihihihihi'):
    print('Yes')
else:
    print('No')

Solution (Python):
s=input()
s2=s.replace('hi','')

if s2=="":
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()

hic = S.count('hi')
if hic * 2 == len(S):
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()

if len(s) % 2 != 0:
    print('No')
    exit()

for i in range(0, int(len(s)/2), 2):
    if s[i:i+2] != 'hi':
        print('No')
        exit()

print('Yes')

Solution (Python):
import sys
import math
readline = sys.stdin.buffer.readline

s = readline().rstrip().decode('utf-8')
n = len(s)

if n%2 != 0:
    print("No")
    exit()
else:
    for i in range(0,n,2):
        if s[i:i+2] != "hi":
            print("No")
            exit()
print("Yes")

Solution (Python):
s = input()
for i in s.split("hi"):
  if i:
    print("No")
    break
else:
  print("Yes")

Solution (Python):
s = input()
p = len(s)
s = s.replace('hi', '')
a = len(s)
if a==0:
  print('Yes')
else:
  print('No')

Solution (Python):
s = input()

if len(s)%2 != 0:
    print('No')
    exit()
else:
    for x in range(0,len(s), 2):
        if s[x:x+2] != 'hi':
            print('No')
            exit()
print('Yes')

Solution (Python):
S = input()
j = True
if len(S)&1: j = False
else:
    for i in range(0,len(S),2):
        if S[i] != 'h' or S[i+1] != 'i':
            j = False
            break
print('Yes' if j else 'No')

Solution (Python):
S = input()
for i in range(1,6):
  hikaku = 'hi' * i
  if S == hikaku:
    print('Yes')
    exit()
print('No')

Solution (Python):
S = input()
flag = False
for i in range(1, 6):
  if "hi"*i == S:
    flag = True
if flag:
  print("Yes")
else:
  print("No")

Solution (Python):
S=input()
flag=True
for i in range(len(S)):
    if i%2==0:
        if S[i]!="h":
            flag=False
            break
    else:
        if S[i]!="i":
            flag=False
            break

if flag and len(S)%2==0:
    print("Yes")
else:
    print("No")

Solution (Python):
s = str(input())
if len(s.replace('hi', '')) == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
S=input()
flg=0
if len(S)%2==1:
  flg=1
else:
  for i in range(len(S)//2):
    if not(S[i*2]=="h" and S[i*2+1]=="i"):
      flg=1
if flg==0:
  print("Yes")
else:
  print("No")

Solution (Python):

from fractions import gcd
import math

from math import factorial as f

from math import ceil,floor,sqrt


import bisect
import re
import heapq


from copy import deepcopy
import itertools

from sys import exit

ii = lambda : int(input())
mi = lambda : map(int,input().split())
li = lambda : list(map(int,input().split()))

yes = "Yes"
no = "No"

def main():
    s = input()
    if len(s) %2:
        print(no)
        exit()

    for i in range(len(s)):
        if i%2 == 0 and s[i] == 'h':
            continue
        elif i%2 == 1 and s[i] == 'i':
            continue
        else:
            print(no)
            exit()
    
    print(yes)
            




main()

Solution (Python):
import sys

def I(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def LMI(): return list(map(int, sys.stdin.readline().split()))
MOD = 10 ** 9 + 7


S = input()
if len(S) % 2 != 0:
    print('No')
    exit(0)
for i, c in enumerate(S):
    if i % 2 == 0 and c != 'h':
        print('No')
        exit(0)
    if i % 2 != 0 and c != 'i':
        print('No')
        exit(0)
print('Yes')

Solution (Python):
s = input()

for i in range(1,6):
  t = "hi" * i
  if t == s:
    print("Yes")
    exit()
  
print("No")

Solution (Python):
s=input()
l=len(s)
bo =True
if l%2==1:
	print("No")
else:
	x=int(l/2)
	for i in range(x):
		if s[2*i]!="h" or s[2*i+1]!="i":
			bo=False
			break
	if bo==True:
		print("Yes")
	else:
		print("No")

Solution (Python):
s = input()
if len(s)%2:
    print('No')
    exit()
for i in range(len(s)//2):
    if s[i*2:i*2+2] != 'hi':
        print('No')
        exit()
print('Yes')

Solution (Python):
n = list(input())
if len(n) % 2 != 0:
         print("No")
         exit()
for i in range(len(n)):
         if i % 2 == 0:
                  if n[i] != "h":
                           print("No")
                           exit()
         elif i % 2 == 1:
                  if n[i] != "i":
                           print("No")
                           exit()
print("Yes")

Solution (Python):
S = input()
flag=0
for i in range(0,len(S),2):
    s = S[i:i+2]
    if s!="hi":
        flag=1
        break
if flag==1:
    print("No")
else:
    print("Yes")

Solution (Python):

a = input()

if a == 'hi' or a =='hihi' or a =='hihihi' or a =='hihihihi' or a =='hihihihihi':
    print('Yes')
else:
    print('No')

Solution (Python):
def solve():
    S = input()
    if len(S) % 2 == 1 or len(S) == 0:
        print('No')
        exit()
    for i in range(len(S)):
        if i % 2 == 0:
            if S[i] != 'h':
                print('No')
                exit()
        else:
            if S[i] != 'i':
                print('No')
                exit()
    print('Yes')


if __name__ == '__main__':
    solve()

Solution (Python):
s = input()

s_num = len(s)
flag = 0 if s_num%2==0 else 1
for i in range(s_num//2):
    if s[2*i:2*i+2] != 'hi':
        flag = 1

ans = 'No' if flag==1 else 'Yes'
print(ans)

Solution (Python):
S=list(input())
odd = 1
for i in range(len(S)):
    if odd == 1:
        if S[i] != 'h':
            print ("No")
            exit(0)
    if odd == 0:
        if S[i] != 'i':
            print ("No")
            exit(0)

    odd = 1 - odd

if odd == 1:
    print ("Yes")
else:
    print ("No")

Solution (Python):
S=input()

print('Yes' if S.replace('hi','')=='' else 'No')

Solution (Python):


import sys
import math
from bisect import bisect_right as br
from bisect import bisect_left as bl
sys.setrecursionlimit(2147483647)
from heapq import heappush, heappop,heappushpop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
from itertools import permutations
mod = 10**9 + 7
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

s = input()
n = len(s)
flg = False
for i in range(n):
    if not flg:
        if s[i] == 'h':
            flg = True
            continue
    else:
        if s[i] == 'i':
            flg = False
            continue
    print('No')
    quit()
if s[-1] != 'i':
    print('No')
else:
    print('Yes')

Solution (Python):
S = input()

if len(S) % 2 != 0:
    print("No")
else:
    N = int(len(S) / 2)

    flag = 0

    for indx in range(N):
        if ((S[indx * 2 + 0] != "h") or
            (S[indx * 2 + 1] != "i")):
            flag = 1

    if flag == 0:
        print("Yes")
    else:
        print("No")

Solution (Python):
s = input()
if len(s) % 2 == 1:
    print('No')
else:
    x = s.count('hi')
    if x == len(s) // 2:
        print('Yes')
    else:
        print('No')

Solution (Python):
import sys
def input():
    return sys.stdin.readline()[:-1]

S = input()
L = len(S)
if not L%2==0:
    print('No')
    exit()
i = 0
while i<L:
    if not S[i:i+2]=='hi':
        print('No')
        exit()
    i+=2
print('Yes')

Solution (Python):

S = list(input())
count = 0
if len(S) % 2 == 1:
    print("No")
    exit()
else:

    for i in range(0,int(len(S)//2),2):
        if S[i]+S[i+1] == "hi":
            pass
        else:
            print("No")
            exit()

    print("Yes")

Solution (Python):
S = input()
len_s = len(S)
hitachi = 'hihihihihi'
if len_s%2==1:
    print('No')
else:
    if S==hitachi[0:len_s]:
        print('Yes')
    else:
        print('No')

Solution (Python):
S = input()

S_sp = S.split("hi")

if set(S_sp) == {""}:
    print("Yes")
else:
    print("No")

Solution (Python):
s = input().replace('hi','')

if len(s) == 0:
  print('Yes')
else:
  print('No')

Solution (Python):

import sys

YES = "Yes"  
NO = "No"  


def solve(S: str):
    ans = YES

    for i, s in enumerate(S):
        if i%2==0:
            if s != "h":
                ans = NO
                break
        else:
            if s != "i":
                ans = NO
                break
    if len(S) % 2 == 1:
        ans = NO
    print(ans)



def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    S = next(tokens)  
    solve(S)

if __name__ == '__main__':
    main()

Solution (Python):
s = list(input())

i = 0
if len(s) % 2 != 0:
    print("No")
    exit()
while i < len(s):
    if s[i] != "h" or s[i + 1] != "i":
        print("No")
        exit()
    i += 2

print("Yes")

Solution (Python):
import sys
import bisect
MAX_INT = int(10e15)
MIN_INT = -MAX_INT
mod = 1000000007
sys.setrecursionlimit(1000000)
def IL(): return list(map(int,input().split()))
def SL(): return input().split()
def I(): return int(sys.stdin.readline())
def S(): return input()

s = S()
N = len(s)
if N%2 == 0:
  if s.count("hi") == N//2:
    print("Yes")
  else:
    print("No")
else:
  print("No")

Solution (Python):
n = str(input())
ans = 'Yes'
if len(n)%2 == 1:
    ans = 'No'
else:
    for i in range(0, len(n)-1, 2):
        if n[i] != 'h' or n[i + 1] != 'i':
            ans = 'No'

print(ans)

Solution (Python):
s = input()

if len(s) % 2 == 0:
    ans = True
else:
    ans = False

for i in range(len(s)):
    if i % 2 == 0:
        if s[i] != 'h':
            ans = False
    else:
        if s[i] != 'i':
            ans = False

if ans:
    print('Yes')
else:
    print('No')

Solution (Python):

S = input()
c = S.count('hi')
s = S.split('hi')

for ss in s:
    if ss=='':continue
    elif ss!='hi':
        print('No')
        exit()

if len(s)-1==c : print('Yes')
else: print('No')

Solution (Python):
S = input()
if S == "hi" or S == "hihi" or S == "hihihi" or S == "hihihihi" or S == "hihihihihi" : print("Yes") 
else: print("No")

Solution (Python):
s=input()

if s == 'hi' or s == 'hihi' or s == 'hihihi' or s == 'hihihihi' or s == 'hihihihihi':
    print('Yes')
else:
    print('No')

Solution (Python):
s = str(input())

if s == "hi" or s == "hihi" or s == "hihihi" or s == "hihihihi" or s == "hihihihihi":
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()

ans = 'No'

if s.count('hi') * 2 == len(s):
    ans = 'Yes'

print(ans)

Solution (Python):
N = input()
chk = 0
if len(N)%2 == 1:
  print("No")
else:
  for i in range(len(N)//2):
    if N[(2*i):(2*i+2)] != "hi":
      chk = 1
      break
    else:
      continue
  if chk == 1:
    print("No")
  else:
    print("Yes")

Solution (Python):
s = input()
l = len(s)
c = s.count('hi')
if 2 * c == l:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
if s == "hi" or s == "hihi" or s == "hihihi" or s == "hihihihi" or s == "hihihihihi":
    print("Yes")
else:
    print("No")

Solution (Python):

s = input()

f = len(s) % 2 == 0
for c in s[0::2]:
    if c != 'h':
        f = False

for c in s[1::2]:
    if c != 'i':
        f = False

if f:
    print('Yes')
else:
    print('No')

Solution (Python):
from collections import defaultdict
from collections import deque
from string import ascii_uppercase
import sys, bisect, math, heapq

stdin = sys.stdin
read_int = lambda : list(map(int,stdin.readline().split()))
read_str = lambda : stdin.readline().rstrip()

S = read_str()

def solve():
    if len(S) < 2 or len(S) % 2 == 1:
        return 'No'
    for i, s in enumerate(S):
        if i % 2 == 0:
            if s != 'h': return 'No'
        else:
            if s != 'i': return 'No'
    return 'Yes'

if __name__ == "__main__":
    print(solve())

Solution (Python):
s = input()

n = len(s)

if n % 2 == 1:
    print('No')
else:
    for i in range(0, n, 2):
        if s[i:i+2] != 'hi':
            print('No')
            break
    else:
        print('Yes')

Solution (Python):
s  = input()
ans = ['hi','hihi','hihihi','hihihihi','hihihihihi']
if s in ans:
    print('Yes')
else:print('No')

Solution (Python):
s = input()

correct = True
if len(s) % 2 != 0:
    print("No")
    correct = False
else:
    length = len(s) // 2
    for i in range(length):
        if s[i * 2] != "h":
            print("No")
            correct = False
            break
        elif s[i*2 +1] != "i":
            print("No")
            correct = False
            break

if correct:
    print("Yes")

Solution (Python):
s=input()
if len(s)%2==1:
	print("No")
	exit()
for i in range(len(s)//2):
	if s[i*2]+s[i*2+1]=="hi":
		continue
	else:
		print("No")
		exit()
print("Yes")

Solution (Python):
import sys

def main():
    s = input()
    sl = list(s)
    sl_o = [c == 'h' for c in s[::2]]
    sl_e = [c == 'i' for c in s[1::2]]
    if all(sl_o) and all(sl_e) and s[-1] == ('i'):
        print('Yes')
    else:
        print('No')

if __name__ == '__main__':
    main()

Solution (Python):
s = input()
t = s.replace('hi', '')
print('Yes') if t == '' else print('No')

Solution (Python):
s = input()

s = s.replace("hi","")

if s == "":
  ans = "Yes"
else:
  ans = "No"

print(ans)

Solution (Python):

from collections import defaultdict,deque
from heapq import heappush, heappop
from bisect import bisect_left, bisect_right
import sys, random, itertools, math
sys.setrecursionlimit(10**5)
input = sys.stdin.readline
sqrt = math.sqrt
def LI(): return list(map(int, input().split()))
def LF(): return list(map(float, input().split()))
def LI_(): return list(map(lambda x: int(x)-1, input().split()))
def II(): return int(input())
def IF(): return float(input())
def LS(): return input().split()
def S(): return list(input().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = 1e10


def solve():
    s = S()
    i = 0
    while i != len(s):
        if s[i] == "h" and s[i + 1] == "i":
            i += 2
        else:
            print("No")
            return

        if len(s) == i + 1:
            print("No")
            return
        
    print("Yes")
    return



if __name__ == '__main__':
    solve()

Solution (Python):
import sys
input = sys.stdin.readline

S=input().strip()

while S:
    if S[-2:]=="hi":
        S=S[:-2]
    else:
        break

if S:
    print("No")
else:
    print("Yes")

Solution (Python):
def main():
    s = input()
    
    if len([x for x in s.split('hi') if x != '']) == 0:
        print('Yes')
    else:
        print('No')

if __name__ == '__main__':
    main()

Solution (Python):
n = input()
if len(n)%2==1:
  print('No')
  exit()
for i in range(len(n)):
  if i%2==0:
    if n[i]!='h':
      print('No')
      exit()
  else:
    if n[i]!='i':
      print('No')
      exit()
print('Yes')

Solution (Python):
def main(s):
    if len(s)%2 != 0 :
        return False
    for i in range(len(s)):
        res = True
        if i%2 == 1:
            continue
        else:
            if s[i]!="h" or s[i+1]!="i":
                return False
    return res

s = input()
print("Yes" if main(s) else "No")

Solution (Python):
s = input()
ss = len(s)
if ss % 2 == 1:
  print("No")
  exit()
fl = True
for i in range(ss//2):
  if s[2*i:2*i+2] != "hi":
    fl = False
if fl:
  print("Yes")
else:
  print("No")

Solution (Python):

a = input()

ans = "No"
if len(a) % 2 == 0:
    for i in range(int(len(a)/2)):
        if a[i*2] != "h" or a[i*2+1] != "i":
            break
    else:
        ans = "Yes"
print(ans)

Solution (Python):
s = input()
if len(s) % 2 == 1:
  print('No')
  exit()
for i in range(len(s)//2):
  
  if s[2*i:2*i+2] != 'hi':
    print('No')
    break
else:
  print('Yes')

Solution (Python):
s=input()
if len(s)%2==1:print("No");exit()
for i in range(0,len(s),2):
    if s[i]+s[i+1]=="hi":
        continue
    else:
        print("No")
        exit()
print("Yes")

Solution (Python):
s = input()
ans = "Yes"
if len(s)%2 == 0:
    i = 0
    while(i < len(s)//2+1):
        if s[i:i+2] != "hi":
            ans = "No"
            break
        i += 2
else:
    ans = "No"
print(ans)

Solution (Python):
S = input()
h = "hi"

for i in range(5):
    if (len(S) == 1 or S.find(h) != 0):
        print("No")
        exit()
    S = S[2:]
    if (len(S) == 0):
        break

print("Yes")

Solution (Python):
s = list(input())
a = 0
for i in range(len(s)):
  if i%2 == 0:
    if s[i] == "h":
      continue
    else:
      a += 1
  elif i%2 == 1:
    if s[i] == "i":
      continue
    else:
      a += 1
if s[-1] == "h":
  a += 1
if a == 0:
  print("Yes")
else:
  print("No")