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):
import itertools
from collections import deque,defaultdict,Counter
from itertools import accumulate
import bisect
from heapq import heappop,heappush,heapify
from fractions import gcd
from copy import deepcopy
import math
import queue


Mod = 1000000007
import sys
sys.setrecursionlimit(100000) 
  
def sieve_of_eratosthenes(n):
    if not isinstance(n,int):
        raise TypeError("n is not int")
    if n<2:
        raise ValueError("n is not effective")
    prime = [1]*(n+1)
    for i in range(2,int(math.sqrt(n))+1):
        if prime[i] == 1:
            for j in range(2*i,n+1):
                if j%i == 0:
                    prime[j] = 0
    res = []
    for i in range(2,n+1):
        if prime[i] == 1:
            res.append(i)
    return res

 
class UnionFind:
    def __init__(self,n):
        self.parent = [i for i in range(n+1)]
        self.rank = [0 for i in range(n+1)]
    
    def findroot(self,x):
        if x == self.parent[x]:
            return x
        else:
            y = self.parent[x]
            y = self.findroot(self.parent[x])
            return y
    
    def union(self,x,y):
        px = self.findroot(x)
        py = self.findroot(y)
        if px < py:
            self.parent[py] = px
        else:
            self.parent[px] = py
 
    def same_group_or_no(self,x,y):
        return self.findroot(x) == self.findroot(y)

def main(): 
    s = input()
    s = s.replace("hi","")
    print("No" if s else "Yes")

if __name__ == "__main__":
    main()

Solution (Python):
S=input().split("hi")
flag=False


for i in S:
    if i =="":
        continue
    else:
        flag=True
        
if flag:
    print("No")
else:
    print("Yes")

Solution (Python):
s = input()
n = len(s) // 2
lst = [(i + j) for (i, j) in zip(s[::2], s[1::2])]

check = 0
for i in range(n):
    if lst[i] == 'hi':
        check = 1
    else:
        check = 0
        break

if len(s) % 2 == 1:
    check = 0

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

Solution (Python):
S=input()

hi="hi"

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

Solution (Python):


a = list(input())

Flag=True
if a.count('h')+a.count('i')!=len(a):
    Flag = False
if a[0::2].count('h')!=len(a)/2:
    Flag = False
if a[1::2].count('i')!=len(a)/2:
    Flag = False

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

Solution (Python):
import re

s = str(input())
m = re.fullmatch(pattern='(hi)+', string=s)
if m:
  print('Yes')
else:
  print('No')

Solution (Python):
s = str(input())
x = int(len(s) / 2)
if len(s) % 2 == 0:
    if 'hi' * x == s:
        print('Yes')
    else:
        print('No')
else:
    print('No')

Solution (Python):
S = list(input())
for i in range(0, len(S), 2):
    if i + 1 < len(S):
        if 'hi' != S[i] + S[i + 1]:
            print('No')
            exit()
    else:
        print('No')
        exit()
print('Yes')

Solution (Python):
from collections import defaultdict,deque
import sys,heapq,bisect,math,itertools,string,queue,copy,time
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
def inp(): return int(sys.stdin.readline())
def inpl(): return list(map(int, sys.stdin.readline().split()))
def inpl_str(): return list(sys.stdin.readline().split())

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

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

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

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


for i in range(l):
    if i%2 == 0 and S[i]!="h":
        print("No")
        exit()
    if i%2 != 0 and S[i]!="i":
        print("No")
        exit()
print("Yes")

Solution (Python):
test_input = str(input())
v = [(test_input[i*2]+test_input[i*2+1]) for i in range(int(len(test_input)/2))]
if len(test_input)%2 !=0:
    print("No")
elif set(v) == set(["hi"]):
    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 and s[i] != 'h') or ( i % 2 == 1 and s[i] != 'i'):
        print("No")
        exit()

print("Yes")

Solution (Python):
import math
s = input()
n = math.ceil(len(s)/2)
hitachi = ""
for i in range(n):
  hitachi += "hi"
if hitachi in s:
  print("Yes")
else:
  print("No")

Solution (Python):
s = input()

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

Solution (Python):
S = input()
A = 'No'
if len(S) == 2:
    if S == 'hi':
        A = 'OK'
if len(S) == 4:
    if S == 'hihi':
        A = 'OK'
if len(S) == 6:
    if S == 'hihihi':
        A = 'OK'
if len(S) == 8:
    if S == 'hihihihi':
        A = 'OK'
if len(S) == 10:
    if S == 'hihihihihi':
        A = 'OK'

if A == 'OK':
    print('Yes')
else:
    print('No')

Solution (Python):


a = input()

hi = "hi"

for i in range(5):
    if a == hi:
        print("Yes")
        exit(0)
    hi = hi + "hi"
print("No")

Solution (Python):
a=input()

if a=='hi':
  print('Yes')
  exit()
elif a=='hihi':
  print('Yes')
  exit()
elif a=='hihihi':
  print('Yes')
  exit()
elif a=='hihihihi':
  print('Yes')
  exit()
elif a=='hihihihihi':
  print('Yes')
  exit()
  
print('No')

Solution (Python):
n=input()
n2=n.replace('hi','')
if(len(n2)==0):
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
a = S.count("hi")
b = len(S)

if a == b/2 :
    print("Yes")
else:
    print("No")

Solution (Python):



def main():
    s = input()
    n = len(s)
    if n%2!=0:
        print('No')
        return
    else:
        q=s[:2]
        if q!='hi':
            print('No')
            return
        a=2
        while a<=n-2:
            if s[a:a+2]!=q:
                print('No')
                return
            a+=2
        print('Yes')
        return
main()

Solution (Python):
s=input()
while True:
  if len(s)==0:
    print("Yes")
    break
  elif len(s)==1:
    print("No")
    break
  elif s[:2]=="hi":
    s=s[2:]
  else:
    print("No")
    break

Solution (Python):
S = input()
L = len(S)
cnt = S.count("hi")

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

elif (L // 2 == cnt):
    print('Yes')
else:
    print('No')

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

Solution (Python):
S = input()
s = list(S)
k = []
a = round(len(s) / 2)
b = len(s) % 2
if b == 0:
    for i in range(a):
        k.append(s[i * 2]+s[i * 2 + 1])
    n = 0
    for j in range(a):
        if k[j] == "hi":
            n = n + 1
    if n == 0:
        print("No")
    elif n == a:
        print("Yes")
    else:
        print("No")
    
else:
    print("No")

Solution (Python):
import math
import sys

s = input()
num = len(s)


if num % 2 != 0:
    print("No")
    sys.exit()


for i in range(math.floor(num/2)):
    if s[2 * i] != "h":
        print("No")
        sys.exit()


for j in range(math.floor(num/2)):
    if s[2 * j + 1]  != "i":
        print("No")
        sys.exit()
        
print("Yes")

Solution (Python):
s = input()
data = len(s)
s = list(s)
j = 0
for i in s:
  if j%2 == 0:
    if i != "h":
      break
  if j%2 == 1:
    if i != "i":
      break
  j += 1

      
if j == data and data%2 == 0:
  print("Yes")
else:
    print("No")

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

Solution (Python):
S = input()
l = ["hi", "ta", "chi"]
ans = "Yes"

n = []
for i in range(len(S)):
  if i not in n:
    if S[i: i + 2] in l:
      n.append(i + 1)
      continue
    elif S[i: i + 3] in l:
      n.append(i + 2)
    else:
      ans = "No"
      break
print(ans)

Solution (Python):
s = input()
h_else_i = True
 
ret = True
for char in s:
  if h_else_i:
    if char == "h":
      h_else_i = not h_else_i
      continue
    else:
      ret = False
      break
  else:
    if char == "i":
      h_else_i = not h_else_i
      continue
    else:
      ret = False
      break
if ret and h_else_i:
  print("Yes")
else:
  print("No")

Solution (Python):
n = input()
flag = True
if len(n) % 2 == 1:
    flag = False
for i in range(len(n)-1):
    if n[i] == 'h' and n[i+1] == 'i':
        continue
    elif n[i] == 'i' and n[i+1] == 'h':
        continue
    else:
        flag = False
        break
if flag:
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
a = True
for i in range(len(S)):
    if len(S) % 2 != 0:
        a = False 
        break
    else:
        if i %2==0 and (S[i] != 'h' or S[i+1] != 'i'):
            a = False

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

Solution (Python):
S=input()

i=0
flag=0
while i<len(S) and len(S)%2==0:
    if S[i] == 'h' and S[i+1] == 'i':
        i=i+2
    else:
        flag=1
        i=len(S)

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

Solution (Python):
S = input()
hi_count = S.count('hi')

if len(S) == hi_count * 2 :
  print('Yes')
else:
  print('No')

Solution (Python):
s = input()
if s in ["hi" * i for i in range(1, 6)]:
  print("Yes")
else:
  print("No")

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

Solution (Python):
s=input()
cc=s.count('hi')
l=len(s)
if cc==0:
  print('No')
elif l/2==cc:
  print('Yes')
else:
  print('No')

Solution (Python):
S = input()
import re
if re.fullmatch(r'(hi)+',S):
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
if len(S) != (S.count('h') + S.count('h')):
    print('No')
else:
    if S.count('h') == S.count('i') and S.count('i') == S.count('hi'):
        print('Yes')
    else:
        print('No')

Solution (Python):
input_line = input()

remaining = input_line.replace("hi", "")

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

Solution (Python):
s=list(input())
if len(set(s))==2 and all([i=="h" for i in s[0::2]]) and all([i=="i" for i in s[1::2]]) and len(s)%2==0:
    print("Yes")
else:
    print("No")

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

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

if len(ss) == 0:
    ans = 'Yes'
else:
    ans = 'No'

print(ans)

Solution (Python):
x = input()
y = "hi"
for i in range(5):
    if y == x:
        print("Yes")
        break
    y = y + "hi"
else:
    print("No")

Solution (Python):
import re;print("YNeos"[re.match(r"^(hi)+$",input())==None::2])

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

Solution (Python):
import sys
S = input()
if len(S) % 2 == 1:
  print('No')
  sys.exit()


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

Solution (Python):


import sys
import math
import itertools

def main():
    s = sys.stdin.readline().strip()

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

if __name__ == '__main__':
    main()

Solution (Python):
import re

S = input()

items = re.split('(..)',S)[1::2]

flg = False

for item in items:
    if item != "hi":
        flg = True

if len(S) % 2 == 1 or flg:
    print("No")
else:
    print("Yes")

Solution (Python):


S = str(input())

output = 'No'

if ('hi' in S):

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

    if S.isupper():
        output = 'Yes'


print(output)

Solution (Python):
from sys import stdin

def main():

    input = stdin.readline

    S = input()[:-1]

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

    for i in range(len(S)//2):

        if (S[i*2:i*2+2] == "hi"):
            continue
        else:
            print("No")
            return
    
    print("Yes")


if __name__ == "__main__":
    main()

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

Solution (Python):
import sys

S=input().strip()

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

for i,word in enumerate(S):
  if (i%2==0 and word=="h") or (i%2==1 and word=="i"):
    continue
  else:
    print("No")
    break

else:
  print("Yes")

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

Solution (Python):
import re
S = input()

pattern = r'^(hi)+$'
results = re.match(pattern, S)

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

Solution (Python):
S = input()
ans = 'None'
l = len(S)
if not l % 2 == 0:
    ans = 'No'
else:
    for j in range(l//2):
        if not (S[2*j] == 'h' and S[2*j+1] == 'i'):
            ans = 'No'
            break
        if j == (l//2)-1:
            ans = 'Yes'
print(ans)

Solution (Python):
s = str(input())
x = "hi"
i = 1
count = 0

for i in range(1, 6):
    if(s == x * i):
        count += 1

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

Solution (Python):
s = input().split("hi")

if len(s)==1:
  print("No")
elif len(set(s)) == 1:
  print("Yes")
else:
  print("No")

Solution (Python):
s=input()
a=0
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 = list(input())
con = 0
if (len(s)%2 == 0):
    for i in range(0,len(s),2):
        if (s[int(i)] == 'h'):
            if(s[int(i)+1] =='i'):
                con += 2
            else:
                print('No')
                exit()
        else:
            print('No')
            exit()
    if (con == len(s)):
        print('Yes')
        exit()
print('No')
exit()

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 = "Yes"
cnt = 0
if len(S)%2 == 1:
  ans = "No"
for i in S:
  if cnt%2==0:
    if i != "h":
      ans = "No"
  else:
    if i != "i":
      ans = "No"
  cnt += 1
print(ans)

Solution (Python):
s = input()
flg = 0
if len(s) % 2 == 0:
    for i in range(0, len(s), 2):
       if s[i] != 'h':
           flg = 1
           break
    else:
        for i in range(1, len(s), 2):
            if s[i] != 'i':
                flg = 1
                break
else:
    flg = 1

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

Solution (Python):
S = input()
N = S.count("hi")
L = len(S)
if int(N)*2 == int(L):
	print("Yes")
else:
	print("No")

Solution (Python):
stringToCheck=input()
j=0;
i=0;
notHitachi=False
length=len(stringToCheck)
if length%2 !=0:
 notHitachi=True
else:
 while i < len(stringToCheck):
  i+=2
  if not stringToCheck[j:i]=='hi': notHitachi=True
  j=i
if notHitachi: print("No")
else: print("Yes")

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

Solution (Python):
S = input()
ans = "Yes"
if S.__len__() % 2 != 0:
    ans = "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:
            ans = "No"
print(ans)

Solution (Python):
S = list(input())
len = len(S)
flag = 1
s = S[0]


for i in range(0, len, 2):
    if len%2 == 1:
        flag = 0
        break

    if S[i] != 'h' or S[i+1] != 'i':
            flag = 0

    """""
    if s == 'h':
        if S[i] == 'i':
            flag = 1
    if s == 'i':
        if S[i] == 'h':
            flag = 1
    s = S[i]
    """

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

Solution (Python):
s= input()

flg = 1
if len(s)%2 == 0:
    for i in range(len(s)//2):
        if s[0+i*2:2+i*2] != "hi":
            break
        if i == len(s)//2 -1:
            print("Yes")
            flg = 0
    if flg == 1:
        print("No")
else:
    print("No")

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

if len(list(s_r)) == 0:
    print("Yes")

else:
    print("No")

Solution (Python):
s=input()
b=s.replace('hi','')
if len(s)==1:
    print("No")
else:
    if b=="":
        print("Yes")
    else:
        print("No")

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

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

S = input().strip()
l = ['hi', 'hihi', 'hihihi', 'hihihihi', 'hihihihihi']

print('Yes') if S in l else print('No')

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

Solution (Python):
S = str(input())
ans_h = 0
ans_i = 0
count_h = 0
count_i = 0

for i in range(0,len(S),2):
    if S[i] != 'h':
        ans_h += 1
    else:
        count_h += 1

for j in range(1,len(S),2):
    if S[j] != 'i':
        ans_i += 1
    else:
        count_i += 1

if ans_h == 0 and ans_i == 0 and count_h == count_i:
    print('Yes')
else:print('No')

Solution (Python):
s = input()
for i in range(1,6):
  if s == 'hi'*i:
    print('Yes')
    break
else: print('No')

Solution (Python):


s = input()

fl = True
for i in range(len(s)):
    if i % 2 == 0:
        if s[i] != 'h':
            fl = False
    else:
        if s[i] != 'i':
            fl = False
            
if len(s) % 2 == 1:
    fl = False

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

Solution (Python):
s=input()
n=len(s)
p=0
if n%2==1:
    p=1
else:
    n2=n//2
    for i in range(n2):
        if s[i*2]!='h':
            p=1
        if s[i*2+1]!='i':
            p=1
if p==0:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
if "".join(s.split("hi")) == "":
  print("Yes")
else:
  print("No")

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

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

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

cnt=0
for i in range(len(S)):
	if i%2==0:
		if S[i]=='h':
			cnt+=1
		else:
			break
	else:
		if S[i]=='i':
			cnt+=1
		else:
			break
if cnt==len(S) and len(S)%2==0:
	print('Yes')
else:
	print('No')

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

Solution (Python):
import sys

input_methods=['clipboard','file','key']
using_method=0
input_method=input_methods[using_method]

IN=lambda : map(int, input().split())
mod=1000000007



def cc():
	s = input()
	if len(s)%2 != 0:
		return False
	for i , c in enumerate(list(s)):
		if i % 2 == 0 and c != 'h':
			return False
		if i % 2 == 1 and c != 'i':
			return False
	return True
	
def main():
	ret = 'Yes' if cc() else 'No'
	return ret
	
	

isTest=False

def pa(v):
	if isTest:
		print(v)
		
def input_clipboard():
	import clipboard
	input_text=clipboard.get()
	input_l=input_text.splitlines()
	for l in input_l:
		yield l

if __name__ == "__main__":
	if sys.platform =='ios':
		if input_method==input_methods[0]:
			ic=input_clipboard()
			input = lambda : ic.__next__()
		elif input_method==input_methods[1]:
			sys.stdin=open('inputFile.txt')
		else:
			pass
		isTest=True
	else:
		pass
		
			
	ret = main()
	if ret is not None:
		print(ret)

Solution (Python):


S = input()

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

for i in range(l):

    if (i%2 == 0 and S[i] == "h") or (i%2 == 1 and S[i] == "i"):
        f = True
    else:
        f = False
        break
if f:
    print("Yes")
else:
    print("No")

Solution (Python):
input_str = input()

if input_str.replace("hi","") == "":
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()

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

while i + 1 <= len(S):
    if S[i] == 'h' and S[i+1] == 'i':
        i += 2
    else:
        break

if i == len(S):
    print('Yes')
else:
    print('No')

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

Solution (Python):
S = str(input())
l = len(S)
if l%2 == 1:
    print("No")
else:
    k = 1
    for i in range (l//2):
        if S[2*i] != "h":
            k = 0
        if S [2*i + 1] != "i":
            k = 0
    if k == 0:
        print("No")
    else:
        print("Yes")

Solution (Python):
string = input()
for i in range(len(string)):
    if i % 2 == 0:
        if string[i] == 'h':
            continue
        else:
            print('No')
            break
    elif i % 2 == 1:
        if string[i] == 'i':
            continue
        else:
            print('No')
            break
else:
    if len(string) % 2 == 1:
        print('No')
    else:
        print('Yes')

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

Solution (Python):

if __name__ == "__main__":
    S = input()
    if len(S) % 2 == 0:
        for i in range(0, len(S), 2):
            if S[i] == "h" and S[i+1] == "i":
                ret = "Yes"
            else:
                ret = "No"
                break
    else:
        ret = "No"
    print(ret)

Solution (Python):
def resolve():
    S = input()
    c = list(S)
    count = len(c)
    if count == 1 or count % 2 != 0:
        print('No')
        return

    if count == 2 and S != 'hi':
        print('No')
        return

    for i in range(0, count - 2, 2):
        if ''.join(c[i:i + 2]) != 'hi':
            print('No')
            return
    print('Yes')


resolve()

Solution (Python):
S = input()

for i in range(1,6):
  if S == 'hi'*i:
    print('Yes')
    break
    

else:
  print('No')

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

Solution (Python):
s = input()
if any(s == 'hi'*i for i in range(10)):
    print('Yes')
else:
    print('No')

Solution (Python):
import re

S = input()

s = re.search(r'^(hi)+$', S)

if s:
    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()

if len(S)%2 == 1:
    print('No')
else:
    for i in range(int(len(S)/2)):
        if S[i*2:i*2+2] != 'hi':
            print('No')
            break
    else:
        print('Yes')

Solution (Python):
S = input()
hitachi = ["h", 'i']
init = 0
for i in range(len(S)):
    if not hitachi[init] == S[i]:
        print("No")
        exit()
    init = 1 - init

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

Solution (Python):
S = input()

res = 'Yes'
if len(S) % 2 != 0:
  res = 'No'
else:
  cnt = len(S) // 2
  for i in range(cnt):
    if S[i * 2 : i * 2 + 2] == 'hi':
      continue
    else:
      res = 'No'

print(res)

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

Solution (Python):
def solve():
  s=list(input())
  if(len(s)<2 or len(s)%2==1):
      print("No")
      return
  for i in range(len(s)):
      if (i%2==0 and s[i]!='h'):
          print("No")
          return
      elif(i%2==1 and s[i]!='i'):
          print("No")
          return
  print("Yes")

solve()

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

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

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





if __name__ == '__main__':
    solve()

Solution (Python):
import sys; sys.setrecursionlimit(2147483647); input = sys.stdin.readline
from math import floor, ceil, sqrt, factorial, log
from collections import Counter, defaultdict, deque
from operator import itemgetter
INF = float('inf'); MOD = 10**9+7
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(MI())
def LIR(n): return [LI() for i in range(n)]
def IS(): return input().rstrip()
import re

def main():
    S = IS()
    if len(S)%2 == 1: print('No')
    elif 'hi'* (len(S)//2) == S: print('Yes')
    else: print('No')

if __name__ == '__main__':
    main()

Solution (Python):
s = input()

i = 0

if(len(s) % 2 != 0):
    ans = "No"
else:
    while i < len(s):
        if(s[i] == 'h' and s[i+1] == 'i'):
            ans = "Yes"
        else:
            ans = "No"
            break
        i += 2

print(ans)

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

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

Solution (Python):
s=input()
s=s.replace("hi","").replace("hihi","").replace("hihihi","").replace("hihihihi","").replace("hihihihi","")
if s == "":
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()
s1 = "hi"
s2 = "hihi"
s3 = "hihihi"
s4 = "hihihihi"
s5 = "hihihihihi"
result = "No"

if S == s1:
    result = "Yes"
elif S == s2:
    result = "Yes"
elif S == s3:
    result = "Yes"
elif S == s4:
    result = "Yes"
elif S == s5:
    result = "Yes"
print(result)

Solution (Python):
S = list(input())
if len(S) == 1:
  print("No")
  exit()
flg = True
for i, s in enumerate(S):
  if i%2 == 0:
    if s != "h":
      flg = False
  else:
    if s != "i":
      flg = False
if flg and len(S)%2 == 0:
  print("Yes")
else:
  print("No")

Solution (Python):
import sys
import textwrap

s=input()
c=-1
if "hi" not in s:
    print("No")
    sys.exit()
    
w=textwrap.wrap(s,2)

for i in w:
    if i!="hi":
        c=0
        break
if c==0:
    print("No")
else:
    print("Yes")

Solution (Python):


import sys
 
stdin = sys.stdin
inf = 1 << 60
mod = 1000000007
 
ni = lambda: int(ns())
nin = lambda y: [ni() for _ in range(y)]
na = lambda: list(map(int, stdin.readline().split()))
nan = lambda y: [na() for _ in range(y)]
nf = lambda: float(ns())
nfn = lambda y: [nf() for _ in range(y)]
nfa = lambda: list(map(float, stdin.readline().split()))
nfan = lambda y: [nfa() for _ in range(y)]
ns = lambda: stdin.readline().rstrip()
nsn = lambda y: [ns() for _ in range(y)]
ncl = lambda y: [list(ns()) for _ in range(y)]
nas = lambda: stdin.readline().split()

s = ns()
n = len(s)
if n % 2 == 1:
    print("No")
else:
    i = 0
    cnt = 0
    while i < n - 1:
        if s[i] == 'h' and s[i + 1] == 'i':
            cnt += 2
        i += 2
    if cnt == n:
        print("Yes")
    else:
        print("No")

Solution (Python):
s = input()

judge = False

if len(s)%2 ==1:
    judge = True

for i in range(len(s)//2):
    if s[i*2:i*2+2] != "hi":
        judge = True

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

Solution (Python):
import sys
import re
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
from itertools import accumulate, permutations, combinations, product
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from bisect import bisect, bisect_left
from fractions import gcd
from heapq import heappush, heappop
from functools import reduce
def input(): return sys.stdin.readline().strip()
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(): return list(map(str, input().split()))
sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7

S = input()

l = []
for i in range(0, len(S), 2):
    tmp = S[i:i+2]
    l.append(tmp)

flag = 0
for j in l:
    if j != 'hi':
        flag = 1
        break

if len(S) > 0 and flag == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
hitachi = 'hi'
l = len(s) // 2
print('Yes' if hitachi*l == s else 'No')

Solution (Python):
S = input()
if S.count("hi") > 0:
    num = S.count("hi")
    S = S.replace("hi", "", num)
    if len(S) == 0:
        print("Yes")
    else:
        print("No")
else:
    print("No")

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

Solution (Python):
s = list(map(str, input()))
flag = 0
for i in range(len(s)):
    if i%2 == 1 and s[i] != 'i':
        flag = 1
    elif i % 2 ==0 and s[i] != 'h':
        flag = 1
if len(s)%2 == 1:
    flag = 1
if flag == 0:
    print('Yes')
else:
    print('No')

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

for i in range(10):
    if "hi" * i == s:
        print("Yes")
        exit(0)

print("No")

Solution (Python):
s=input()
f=1
i=0
if len(s)%2!=0:
    print("No")
    exit()
while i<len(s):
    if s[i]=="h" and s[i+1]=="i":
        i+=2
    else:
        f=0
        break
if f:
    print("Yes")
else:
    print("No")

Solution (Python):
a = str(input())
b = len(a)
B = int(b/2)
c = 'hi'*B
if a == 'hi':
    print('Yes')
elif b/2 == 1 or b/2 == 2 or b/2 == 3 or b/2 == 4 or b/2 == 5:
    if a == c:
        print('Yes')
    else:
        print('No')
else:
    print('No')

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

Solution (Python):
S = list(input())
rem=len(S)
ans='No'

if rem%2:
    pass
else:
    for i in range(rem//2):
        if S[2*i]=='h' and S[2*i+1]=='i':
            pass
        else:
            break  
    else:
        ans='Yes'
        
print(ans)

Solution (Python):
import sys
s = input()
x = -1
for i in s :
    x += 1
    if x % 2 == 0 :
        if s[x] != "h" :
            print("No")
            sys.exit()
    else :
        if s[x] != "i" :
            print("No")
            sys.exit()

if len(s)%2 != 0 :
    print("No")
    sys.exit() 

print("Yes")

Solution (Python):
import re

S = input()

answer = "No"

for i in range(0,len(S),2):
    if S[i:i+2] == "hi":
        answer = "Yes"
    else:
        answer = "No"



print(answer)

Solution (Python):
S = input()

string_num = len(S) // 2

is_true = True
if len(S) % 2 != 0:
    is_true = False

elif S.count('h') != string_num or S.count('i') != string_num:
    is_true = False

else:
    for i in range(0, len(S) - 1, 2):
        if S[i:i + 2] != 'hi':
            is_true = False

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

Solution (Python):
def hi(S):
    for i in S:
        if i != "":
            return False
    return True

S = input()
S = S.split('hi')

if hi(S) == True:
    print('Yes')
else:
    print('No')