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):
str = input()

a = str.replace('hi', '')


if len(a) > 0:
  print('No')
else:
  print('Yes')

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

if len(s)%2!=0:
    print("No")
    sys.exit()
f=True
for i in range(len(s)//2):
    l=i*2
    if s[l]!="h" or s[l+1]!="i":
        f=False
if f:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()

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

if S[len(S) - 2] == "h" and S[len(S) - 1] == "i":
    print("Yes")
    exit()

print("No")

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

Solution (Python):
import re

s = input()

match = re.match(r"^(hi)+$", s)

result = "Yes" if match else "No"

print(result)

Solution (Python):
import re

str_ = input()
pattern = "hi"

results = re.sub(pattern, "", str_)

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

Solution (Python):
s = input()
next_word = 'h'
is_correct = False

for word in s:
    if word != next_word:
        print('No')
        exit()
    elif word == next_word:
        if next_word == 'h':
            next_word = 'i'
            is_correct = False
        elif next_word == 'i':
            next_word = 'h'
            is_correct = True

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

Solution (Python):
S = input()

if len(S)<=10 and len(S)>=1:
    if (("hi" in S)and(len(S)==2))or(("hihi" in S)and(len(S)==4))or(("hihihi" in S)and(len(S)==6))or(("hihihihi" in S) and (len(S)==8))or(("hihihihihi" in S) and (len(S)==10)):
        print("Yes")
    else:
        print("No")

Solution (Python):
import sys, re, os
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians

from itertools import permutations, combinations, product, accumulate
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from functools import reduce
from bisect import bisect_left, insort_left
from heapq import heapify, heappush, heappop

INPUT = lambda: sys.stdin.readline().rstrip()
INT = lambda: int(INPUT())
MAP = lambda: map(int, INPUT().split())
S_MAP = lambda: map(str, INPUT().split())
LIST = lambda: list(map(int, INPUT().split()))
S_LIST = lambda: list(map(str, INPUT().split()))

sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7


def main():
    S = INPUT()

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

if __name__ == '__main__':
    main()

Solution (Python):
S = input()

while S.find("hi") == 0:
    S = S[2:]

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

Solution (Python):
s = input()
f = 1
if len(s) % 2:
    f = 0
else:
    for h in s[::2]:
        if h != 'h':
            f = 0

    for i in s[1::2]:
        if i != 'i':
            f = 0

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

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

Solution (Python):
n=input()
import re
n2 = re.split('(..)',n)[1::2]


if len(n) % 2 != 0:
    print('No')
else: 
    cnt = 0
    for i,s in enumerate(n2):
        if 'hi' in s:
            cnt += 1
    if cnt == len(n2):
        print('Yes')
    else:
        print('No')

Solution (Python):


def main():
    s = list(input())
    n = len(s)

    chk = 1
    if n % 2 == 0:
        for i in range(n):
            if i % 2 == 0:
                if s[i] != 'h':
                    chk = 0
                    break
            else:
                if s[i] != 'i':
                    chk = 0
                    break
    else:
        chk = 0

    if chk == 1:
        print('Yes')
    elif chk == 0:
        print('No')

if __name__ == '__main__':
    main()

Solution (Python):
from fractions import gcd


import heapq
import math
from collections import defaultdict, Counter, deque
from bisect import *
import itertools
import fractions
import sys
sys.setrecursionlimit(10 ** 7)
MOD = 10 ** 9 + 7
















































































































def main():
    s = input()
    if (len(s)) % 2 == 1:
        print("No")
        exit()
    for i in range(0 , len(s),2):
        if s[i] == "h" and s[i + 1] == "i":
            pass
        else:
            print("No")
            exit()


    print("Yes")
  


if __name__ == '__main__':
    main()

Solution (Python):
from math import floor
s = input()
lens = len(s)
if s == "hi" * floor(lens/2):
    print("Yes")
else:
    print("No")

Solution (Python):
import sys
s=input()
l=len(s)
if l%2==1:
  print('No')
  sys.exit()
for i in range(0,l,2):
  if s[i]=='h':
    if s[i+1]!='i':
      print('No')
      sys.exit()
  else:
    print('No')
    sys.exit()
print('Yes')

Solution (Python):
S = list(input())
res = 'Yes'
if len(S)%2 == 0:
  for i in range(int(len(S)/2)):
    if S[2*i] == 'h' and S[2*i+1] == 'i':
      res = 'Yes'
    else:
      res = 'No'
      break
else:
  res = 'No'

print(res)

Solution (Python):



import sys

s=input()

l = len(s)

if (l % 2 != 0):
    print('No')
    sys.exit()

for i in range(len(s)):
    if (i % 2 == 0 and s[i] != 'h') or (i % 2 == 1 and s[i] != 'i'):
        print('No')
        sys.exit()

print('Yes')

Solution (Python):
s=input()
n=len(s)

if n%2==1:
    print("No")
else:
    for i in range(0,n,2):
        if s[i]=="h" and s[i+1]=="i":
            if i==n-2:
                print("Yes")
            else:
                continue
        else:
            print("No")
            break

Solution (Python):
def a():
    import re

    S = input()
    pattern = '^(hi)+$'

    if re.match(pattern, S):
        print('Yes')
    else:
        print('No')



if __name__ == "__main__":
    a()

Solution (Python):
S= input()

if len(S) %2 != 0:
  print('No')
  exit()
number = len(S)//2
if 'hi'*number == S:
  print('Yes')
  exit()
print('No')

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

Solution (Python):
s = input()

flag = True
for i in range(len(s)//2):
  if (s[i*2] != "h") | (s[i*2+1] != "i"):
    flag = False

if (flag == True) & (len(s)%2==0):
  print("Yes")
else:
  print("No")

Solution (Python):
s = input()
l = len(s)
if s.count("hi") == l/2:
  print("Yes")
else:
  print("No")

Solution (Python):
import re 

c = input()
res = c.replace('hi', '')
if res == '':
    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()
ret = 'Yes'
if len(s) % 2 == 1:
    ret = 'No'
else:
    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:
            ret = 'No'
            break
print(ret)

Solution (Python):
s = input()

ans = True
for i in range(0, len(s)-1, 2):
  if s[i] + s[i+1] != 'hi':
    ans = False
    
if len(s) % 2 == 1:
  ans = False

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

Solution (Python):
import re
s = input()
ans = 'Yes'
s = re.split('(..)', s)[1::]
s = [x for x in s if x != '']
for c in s:
    if c == 'hi': continue
    ans = 'No'
    break
if len(s) == 0: ans = 'No'
print(ans)

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

    if not len(s)%2 == 0:
        print('No')
        return

    for i in range(len(s)):
        if i%2 == 0:
            if not s[i] == "h":
                print('No')
                return
        else:
            if not s[i] == "i":
                print('No')
                return
    
    print('Yes')

main()

Solution (Python):
str_hi = input()
hi_num = int(len(str_hi) / 2)

if "hi" * hi_num == str_hi:
    print("Yes")
else:
    print("No")

Solution (Python):
import re
strin=input()
pattern = '(hi)+$'
if re.match(pattern, strin):
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()

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

Solution (Python):
s = input()
cnt = 0

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

for i in range(len(s)//2):
    if i == (len(s)/2):
        break
    if s[(i*2):(i+1)*2] != 'hi':
        cnt += 1

print('Yes' if cnt == 0 else 'No')

Solution (Python):
n=input()
import re
n2 = re.split('(..)',n)[1::2]


if len(n) % 2 != 0:
    print('No')
else: 
    cnt = 0
    for i,s in enumerate(n2):
        if 'hi' in s:
            cnt += 1
    if cnt == len(n2):
        print('Yes')
    else:
        print('No')

Solution (Python):
def main():
	s = input()
	for _ in range(15):
		s=s.replace("hi", " ")
	for _ in range(15):
		s=s.replace(" ", "")
	if s=="":
		print("Yes")
	else:
		print("No")

main()

Solution (Python):
n = input()
l = n.replace("hi","")

print("No" if len(set(l)) != 0 else "Yes")

Solution (Python):
S = input()
ans = []
for i in range(5):
    ans.append(S == "hi" * (i + 1))
if any(ans):
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
if len(s)%2 == 0 and len(s)//2 == s.count('hi'):
  print("Yes")
else:
  print("No")

Solution (Python):
a = input()
ok = True
if len(a) % 2 == 0:
    for i in range(0, len(a)//2 + 1, 2):
        if a[i:i + 2] != "hi":
            ok = False
            break
else:
    ok = False


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

Solution (Python):
S = input().strip()

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

Solution (Python):
s = input()


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

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

print('Yes')

Solution (Python):
import sys

q="hi"

S=input()

def check_hitachi(query):
    n=len(query)
    if n % 2 == 1:
        return False
    if query.find(q)==0:
        if n==2:
            return True;
        else:
            return check_hitachi(query[2:])
    else:
        return False

result=check_hitachi(S)
if result:
    print("Yes")
else:
    print("No")

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

Solution (Python):
s=list(input())
flag = "i"
count = 0
for i in range(len(s)):
  if flag =="h":
    if s[i] != "i":
      print("No")
      break
    else:
      flag = "i"
  elif flag =="i":
    if s[i] != "h":
      print("No")
      break
    else:
      flag = "h"
  if i == len(s)-1:
    if s[i]=="i":
      print("Yes")
    else:
      print("No")

Solution (Python):
S = input()

Sa = S.split('hi')
Sa = ''.join(Sa)
if len(S) != len(Sa) and len(Sa) == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
a='hi'
b=0
for n in range(5):
	if s==a*(n+1):
		print("Yes")
		b=1
if b!=1:
	print("No")

Solution (Python):
s = input()

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

Solution (Python):
S = input()

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

if len(S) == 0:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
print("Yes" if all(map(lambda x: x=="", S.split("hi"))) else "No")

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

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

Solution (Python):
S = str(input())
count = 0
if S == "hi":
    count = 1
if S == "hihi":
    count = 1
if S == "hihihi":
    count = 1
if S == "hihihihi":
    count = 1
if S == "hihihihihi":
    count = 1
if count ==1:
    print("Yes")
else:
    print("No")

Solution (Python):
S=input().replace("hi","")
print("Yes" if len(S)==0 else "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()

flag = True
for i,s in enumerate(S):
    if len(S)%2==1:
        print('No')
        flag = False
        break
    elif i%2==1:
        if s != 'i':
            print('No')
            flag = False
            break
    elif i%2==0:
        if s != 'h':
            print('No')
            flag = False
            break
if flag == True:
    print('Yes')

Solution (Python):
print('YNeos'[input().replace('hi','')!=''::2])

Solution (Python):



import sys
from collections import deque as deq
import re

S = input()

print('Yes' if re.match(r'^(hi)+$', S) else 'No')

Solution (Python):
s=input()
answer='Yes'
for i in range(len(s)):
    if len(s)%2==1:
        answer='No'
        break
    elif i%2==0:
        if s[i]!='h' or s[i+1]!='i':
            answer='No'
print(answer)

Solution (Python):
S = input()
if S.count("hi") == len(S)/2:
    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':
    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()
ans = True
if len(s) % 2 != 0:
    print('No')
    exit()

for i in range(0, len(s)-1, 2):
    ans = ans and s[i:i+2] == 'hi'

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

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

Sample = ["hi","hihi","hihihi","hihihihi","hihihihihi"]

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

Solution (Python):
import sys

S = sys.stdin.readline().strip()
if len(S) % 2:
    print("No")
    sys.exit()

for i, s in enumerate(S):
   if i % 2 == 0 and s == "h":
       continue
   elif i % 2 == 1 and s == "i":
       continue
   else:
       print("No")
       sys.exit()

print("Yes")

Solution (Python):
S = input()

if len(S) % 2 != 0:
    print("No")
    exit()

for i in range(0, len(S)):
    if i % 2 == 0:
        if S[i] != 'h':
            print("No")
            exit()
    else:
        if S[i] != 'i':
            print("No")
            exit()
print("Yes")

Solution (Python):
s = input()
n = len(s)
if n % 2 == 1:
  print('No')
elif n % 2 == 0 :
  n = n // 2
  moji =''
  for i in range(n):
    moji += 'hi'
  if s == moji:
    print('Yes')
  else:
    print('No')

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

Solution (Python):
s=input()

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

if len(s)%2==0:
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()

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

for (i,j) in zip(S[::2],S[1::2]):

    if not (i == 'h' and j == 'i'):
        print('No')
        exit()
print("Yes")

Solution (Python):
s = input()

count = 0
for index in range(len(s)):
    if index % 2 == 0 and index - 2 <= len(s):
        if s[index:index + 2] == "hi":
            pass
        else:
            count += 1

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

Solution (Python):
S = input()
list = S.split('hi')
while '' in list:
  list.remove('')
if len(list) == 0:
  print('Yes')
else:
  print('No')

Solution (Python):
import sys
text = input()
flag = 0
for s in text:
    if flag == 0 and s == "h":
        flag = 1
    elif flag ==1 and s == "i":
        flag = 0
    else:
        print("No")
        sys.exit()
if flag == 0:
    print("Yes")
else:
    print("No")

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

ans = s.split('hi')
for p in s.split('hi'):
	if p != '':
		ans = False
		break

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

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

Solution (Python):
S = input()

kouho = ["hi", "hihi", "hihihi", "hihihihi", "hihihihihi"]

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

Solution (Python):
import sys

n = input()

i = 0
if len(n) % 2 == 0:
    while True:
        if n[i] == 'h' and n[i+1] == 'i':
            if i == len(n) - 2:
                print('Yes')
                sys.exit()
        else:
            print('No')
            sys.exit()
        i += 2
else:
    print('No')
    sys.exit()

Solution (Python):
s = input()

count = len(s) // 2

if s == 'hi' * count:
  print('Yes')
else:
  print('No')

Solution (Python):
S = input()

if len(S) % 2 ==1:
    out = 'No'

else:
    dammy = 'hi' * (len(S)//2)
    if dammy==S:
        out='Yes'
    else:
        out='No'




print(out)

Solution (Python):
import numpy as np
import fractions

s=str(input())
if(len(s)%2==1):
    print("No")
    exit(0)
for i in range(len(s)-1):
    if(i%2==0):
        if(s[i]!='h' or s[i+1]!='i'):
            print("No")
            exit(0)
    if(s[i]!='h' and s[i]!='i'):
        print("No")
        exit(0)
if(s[len(s)-1]!='h' and s[len(s)-1]!='i'):
    print("No")
    exit(0)
print("Yes")

Solution (Python):
S = input()
HITACHI = "hi"
is_hitachi = True

if len(S)%2 == 0:
  for i in range(len(S)//2):
    if S[2*i:2*i+2] != HITACHI:
      is_hitachi = False
      break
else:
  is_hitachi = False
  
if is_hitachi:
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()
cnt = S.count('hi') * 2
if len(S) == cnt:
    print('Yes')
else:
    print('No')

Solution (Python):
from sys import stdin
import math

s = stdin.readline().rstrip()

flag = False
ss = ''
for i in range(10):
    ss += "hi"
    if s == ss:
        flag = True
        break

if flag:
    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 s[i] == 'h' and s[i+1] == 'i':
        continue
    else:
        print('No')
        exit()


print('Yes')

Solution (Python):
s = list(input())
if s[::2].count('h') == len(s[::2]) and s[1::2].count('i') == len(s[1::2]) and len(s)%2 == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()

if len(S) % 2 != 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')

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()

pre=S[0]

ans='Yes'

if len(S)%2==1:
    print('No')
else:
    for i in range(len(S)):
        if i%2==0:
            if S[i]!='h':
                ans='No'
        else:
            if S[i]!='i':
                ans='No'
    print(ans)

Solution (Python):
def main():
    S = input()

    for i, s in enumerate(S):
        if i % 2 == 0:
            if s == 'h':
                continue
            else:
                print('No')
                exit()
        else:
            if s == 'i':
                continue
            else:
                print('No')
                exit()
    if i % 2 == 0:
        print('No')
    else:
        print('Yes')


if __name__ == '__main__':
    main()

Solution (Python):
s = input()

cnt = 0
for i in range(0, len(s), 2):
    if s[i:i+2] == 'hi':
        cnt += 1

if cnt*2 == len(s):
    print('Yes')
else:
    print('No')

Solution (Python):
S = list(str(input()))

status = 0
det = 0

for i in range(len(S)):
    if status == 0 and S[i] != "h":
        det = -1
        break
    elif status == 1 and S[i] != "i":
        det = -1
        break
    status += 1
    status %= 2

if det == 0 and status == 0:
    print("Yes")
else:
    print("No")

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

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

Solution (Python):
s = input()
length = len(s)

if s == 'hi':
  print("Yes")
else:
  n = length // 2
  if s == 'hi'*n:
    print("Yes")
  else:
    print("No")

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



import sys
sys.setrecursionlimit(200000000)






def pin(type=int):
    return map(type,input().rstrip().split())

def resolve():
    N=input()
    temp=""
    for i in range(5):
        temp+="hi"
        
        if N==temp:
            print("Yes")
            return
    print("No")
    


"""


"""
"""
お前カッコ閉じるの忘れてるだろ
"""
import sys
from io import StringIO
import unittest

class TestClass(unittest.TestCase):
    def assertIO(self, input, output):
        stdout, stdin = sys.stdout, sys.stdin
        sys.stdout, sys.stdin = StringIO(), StringIO(input)
        resolve()
        sys.stdout.seek(0)
        out = sys.stdout.read()[:-1]
        sys.stdout, sys.stdin = stdout, stdin
        self.assertEqual(out, output)
    def test_入力例_1(self):
        input = """hihi"""
        output = """Yes"""
        self.assertIO(input, output)
    def test_入力例_2(self):
        input = """hi"""
        output = """Yes"""
        self.assertIO(input, output)
    def test_入力例_3(self):
        input = """ha"""
        output = """No"""
        self.assertIO(input, output)

if __name__=="__main__":resolve()

Solution (Python):

S = input()
hi_s = "hi"

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

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

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

Solution (Python):
S = input()
l = len(S)
ans = True
if l % 2 != 0:
  ans = False
else:
  for i in range(l):
    if i % 2 == 0 and S[i] == "h": 
      ans = True
    elif i % 2 == 1 and S[i] == "i":
      ans = True
    else:
      ans = False
      break
if ans:
  print("Yes")
else:
  print("No")

Solution (Python):


strings = input().rstrip()
length_strings = len(strings)

correct_strings = "hi" * int(length_strings / 2)

if strings == correct_strings:
    print("Yes")
else:
    print("No")

Solution (Python):
input = input()
n = 2
an = 0
splited = [input[i:i+n] for i in range(0, len(input), n)]
for ahd in splited:
  if splited[an] == "hi":
    an+=1
  else:
    break
if int(an) == int(len(splited)):
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()
if len(S) % 2!=0:
    print("No")
else:
    for i in range(6):
        if "hi" * i == S:
            print("Yes")
            exit()
    print("No")

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

S_len = len(S)
half_len = int(len(S)/2)

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

for i in range(half_len):
    if S[2*i:2*i+2] != 'hi':
        print('No')
        exit()

print('Yes')

Solution (Python):
S = input()
a = len(S) // 2
if 'hi' * a == S:
    print('Yes')
    exit()
print('No')

Solution (Python):
s = input()
k = s.count("hi")
if k==len(s)//2 and len(s)%2==0:
    print("Yes")
else:
    print("No")

Solution (Python):
s=input()
a=len(s)//2
if a*2==len(s):
  st="".join(["hi"]*a)
  if st==s:
    print("Yes")
  else:
    print("No")
else:
  print("No")

Solution (Python):
import re

S = input()

pattern = '^(hi)+$'

if re.match(pattern,S):
    print("Yes")
else:
    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()
if s == 'hi' or s == 'hihi' or s == 'hihihi' or s == 'hihihihi' or s == 'hihihihihi':
    print('Yes')
else:
    print('No')

Solution (Python):
S=[i for i in input()]
flg = True
while len(S)>=2:
    if S[0]=="h" and S[1]=="i":
        del S[0:2]
    else:
        flg = False
        break
if flg and len(S)==0:
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
n = len(s)
if n % 2 == 1:
    print("No")
    exit()

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

print("Yes")

Solution (Python):
s=input()
a=s.split('hi')
f=0
for i in a:
  if(len(i)>0):
    f=1
    print('No')
    break
if(f==0):
  print('Yes')

Solution (Python):
S = str(input())
S = S.replace('hi', "")

if(len(S)==0):
    print("Yes")
else:
    print("No")

Solution (Python):
n= str(input())
if len(n)==n.count('hi')*2:
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()

while len(S) > 0:
    
    if S[:2] != 'hi':
        print('No')
        exit()
    S = S[2:]
    
print('Yes')

Solution (Python):
s = input()
if (len(s) == 2 and s == "hi") or (len(s) == 4 and s == "hihi") or (len(s) == 6 and s == "hihihi") or (len(s) == 8 and s == "hihihihi") or (len(s) == 10 and s == "hihihihihi"):
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()

print("Yes" if len(s.replace("hi","")) == 0 else "No")

Solution (Python):
S = list(input())
N = len(S)

if N%2 == 1:
    print('No')
    exit()
for i in range(0,N,2):
    if S[i] != 'h' or S[i+1] != 'i':
        print('No')
        exit()

print('Yes')

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

Solution (Python):
S = input()
l = len(S)
kazu = S.count('hi')
if kazu == l / 2:
    print('Yes')
else:
    print('No')

Solution (Python):
def main():
  s=input()
  if s.count('hi')==len(s)//2 and len(s)>=2 and len(s)%2==0:
    print('Yes')
  else:
    print('No')

  
if __name__ == '__main__':
    main()

Solution (Python):
s = raw_input()
if 'hi' in s and s.count('hi')*2 != len(s):
    print "No"
elif 'hi' in s:
    print "Yes"
else:
    print "No"

Solution (Python):
S = input()
judge = True
if len(S)%2==1:
  print('No')
  exit()
for i in range(len(S)):
  if i%2==0:
    if S[i]=='h':
      continue
    else:
      judge=False
      break
  else:
    if S[i]=='i':
      continue
    else:
      judge=False
      break
      
if judge:
  print('Yes')
else:
  print('No')

Solution (Python):
S = input()

length = len(S)
ans = "Yes"
for i in range(length):
    if (i % 2 == 0):
        if (S[i] != "h"):
            ans = "No"
    else:
        if (S[i] != "i"):
            ans = "No"
if (length % 2 != 0):
    ans = "No"

print(ans)

Solution (Python):
s = input()
t =0 
for s in s:
  if s == "h":
    t=1
  elif s =="i":
    if t == 0:
      t = 0
      print("No")
      quit()
    t = 0
  else:
    print("No")
    quit()
if t == 1:
  print("No")
else:
  print("Yes")

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

Solution (Python):
ans = ['hi','hi'*2,'hi'*3,'hi'*4,'hi'*5]

w = input()

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

Solution (Python):
S=input()
l=len(S)
T=str("")

for i in range(int(l/2)):
	T+=str("hi")

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

Solution (Python):
s = input()

hi = 'hi'

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

Solution (Python):
S = input()

if len(S.replace("hi","")) == 0:
    print("Yes")
else:
    print("No")

Solution (Python):
def main():
    S = input()
    L_S = len(S)

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

    for i in range(L_S // 2):
        if S[i * 2] != 'h' or S[i * 2 + 1] != 'i':
            print('No')
            exit()
    print('Yes')


if __name__ == '__main__':
    main()

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

flag = 0
if len(n) % 2 != 0:
    print("No")
else:
    for i in range(int(len(n)//2)):
        if n[i * 2] == "h" and n[i * 2 + 1] == "i":
            flag = 1
        else:
            flag = 0
    if flag == 1:
        print("Yes")
    else:
        print("No")

Solution (Python):
import sys

lines = sys.stdin.readlines()
 
text = lines[0]

import re
if re.match(r'^(hi)+$', text):
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
a = ["hi", "hihi", "hihihi", "hihihihi", "hihihihihi"]
if s in a:
    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':
                pass
            else:
                flag = 1
        else:
            if s[i] == 'i':
                pass
            else:
                flag = 1

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

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

Solution (Python):
S = list(input())
l = len(S)
if (l % 2 == 0):
    ans = "Yes"
    for i in range(0,l,2):
        if ("".join(S[i:i+2]) != "hi"):
            ans = "No"
    print(ans)
else:
    print("No")

Solution (Python):
S=input()
flag=True

if len(S)%2!=0:
  print("No")
else:
  for i in range(len(S)//2):
    if S[2*i]+S[2*i+1]=="hi":
      pass
    else:
      flag=False
      break
      
  if flag:
    print("Yes")
  else:
    print("No")