Problem:
 Score : 100 points    Problem Statement Ringo is giving a present to Snuke.  Ringo has found out that Snuke loves yakiniku (a Japanese term meaning grilled meat. yaki : grilled, niku : meat). He supposes that Snuke likes grilled things starting with YAKI in Japanese, and does not like other things.  You are given a string S representing the Japanese name of Ringo's present to Snuke. Determine whether S starts with YAKI .      Constraints  1 \leq |S| \leq 10  S consists of uppercase English letters.         Input Input is given from Standard Input in the following format:  S       Output If S starts with YAKI , print Yes ; otherwise, print No .        Sample Input 1 YAKINIKU      Sample Output 1 Yes  YAKINIKU starts with YAKI .       Sample Input 2 TAKOYAKI      Sample Output 2 No  TAKOYAKI (a Japanese snack. tako : octopus) does not start with YAKI .       Sample Input 3 YAK      Sample Output 3 No

Solution (Python):
N=list(input())
if len(N)>=4:
    if N[:4]==["Y","A","K","I"]:
        print("Yes")
        exit()
print("No")

Solution (Python):
name = input()
if name.startswith("YAKI"):
  print("Yes")
else:
  print("No")

Solution (Python):
a = input()
if a[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
import math
import sys

def getinputdata():

    
    array_result = []
    
    data = input()

    
    array_result.append(data.split(" "))

    flg = 1

    try:


        while flg:

            data = input()

            array_temp = []

            if(data != ""):
                
                array_result.append(data.split(" "))

                flg = 1

            else:

                flg = 0
    finally:


        return array_result





arr_data = getinputdata()

s = arr_data[0][0]

print("Yes" if s[0:4]=="YAKI" else "No")

Solution (Python):
s = input()
if len(s)>=4 and s[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):



s = input()
if len(s) >= 4:
    if s[0:4] == 'YAKI':
        print('Yes')
    else:
        print('No')
else:
    print('No')

Solution (Python):
s=input()
if(s[:4]=="YAKI"):print("Yes")
else:print("No")

Solution (Python):
s = str(input())
if s[:4] == "YAKI":
    print("Yes")
else:
    print("No")

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

    if S[:4] == "YAKI":
        print("Yes")
    else:
        print("No")

if __name__ == '__main__':
    main()

Solution (Python):
if (input()[:4]=="YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
print(['Yes','No'][input()[:4]!='YAKI'])

Solution (Python):
if input().startswith("YAKI"):
  print("Yes")
else:
  print("No")

Solution (Python):
s = input()
print("Yes" if s[0:4] == "YAKI" else "No")

Solution (Python):
s = input()
if s.find('YAKI') == 0:
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
if s.startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):

S = input()
if S.startswith("YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
S = raw_input()
if S[:4]=='YAKI':
    print 'Yes'
else:
    print 'No'

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

if S[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
def solve():
    S = input()
    if S[:4] == "YAKI":
        print("Yes")
    else:
        print("No")
    
solve()

Solution (Python):
import sys
from collections import defaultdict, Counter
from itertools import product, groupby, count, permutations, combinations
from math import pi, sqrt, ceil, floor
from collections import deque
from bisect import bisect, bisect_left, bisect_right
from string import ascii_lowercase
from functools import lru_cache, reduce
from operator import xor
INF = float("inf")
sys.setrecursionlimit(10**7)


dy = [0, -1, 0, 1]
dx = [1, 0, -1, 0]


def inside(y: int, x: int, H: int, W: int) -> bool: return 0 <= y < H and 0 <= x < W


def main():
    S = input()
    print("Yes" if S.startswith("YAKI") else "No")


if __name__ == '__main__':
    main()

Solution (Python):
s = input()
if len(s) >= 4 and s[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
a= input()
if len(a) >= 4:
    if a[0:4] == "YAKI":
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
s = raw_input()
if s[0:4] == "YAKI":
  print "Yes"
else:
  print "No"

Solution (Python):
s = input()
if s.startswith("YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
a = raw_input().rstrip()

if len(a)>=4 and a[:4]=='YAKI':
    print 'Yes'
else:
    print 'No'

Solution (Python):
s = input()
if s.find("YAKI")==0:
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
if len(S) < 3:
    print("No")
    exit()

T = S[:4]
if T == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
import numpy as np

S = input()
if S[0:4] == "YAKI":
  print("Yes")
else:
  print("No")

Solution (Python):
S = input()
if S[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()

if S[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time,copy,functools

sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**15
mod = 10**9+7

def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x)-1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def I(): return int(sys.stdin.readline())
def F(): return float(sys.stdin.readline())
def S(): return input()

def main():
    s = S()
    if s[:4] == 'YAKI':
        return 'Yes'

    return 'No'


print(main())

Solution (Python):
a = input()
if a[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s=str(input())
if s[:4]=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S=str(input())
if S[:4]=='YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
print('Yes' if input()[:4]=='YAKI' else 'No')

Solution (Python):
N = list(input())
m = ""
if len(N)  > 3:
    m = N[0] + N[1] + N[2] + N[3]
if m == 'YAKI':
        print('Yes')
else:
        print('No')

Solution (Python):



s = raw_input()

if s[0:4] == "YAKI":
    print "Yes"
else:
    print "No"

Solution (Python):
s=input()
if s[:4]=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):



import re
import itertools

S = raw_input()
matchOBJ = re.search(r'^YAKI', S)

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

Solution (Python):
def main():
    s = input()
    if len(s) < 4 or "YAKI" != s[:4]:
        print("No")
    else:
        print("Yes")


if __name__ == "__main__":
    main()

Solution (Python):
mes="No"
if raw_input()[:4]=="YAKI":mes="Yes"
print mes

Solution (Python):



if __name__ == "__main__":
    S = raw_input()
    if S[0:4] == "YAKI":
        print "Yes"
    else:
        print "No"

Solution (Python):
s=input()
if s[:4]=='YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
if S[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
ans = "Yes" if S[0:4] == "YAKI" else "No"
print(ans)

Solution (Python):
s = input()[:4]
if s == 'YAKI':
	print("Yes")
else:
	print("No")

Solution (Python):
s = raw_input()
if s[0:4] == "YAKI":
 print "Yes"
else:
 print "No"

Solution (Python):
s = input()

if s[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
S = str(input())
if S[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
print("Yes" if input()[:4]=="YAKI" else "No")

Solution (Python):
s = input()
s += "aaa"

if s[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s=input()
if(len(s)>=4) :
	if(s[:4]=="YAKI"): 
		print("Yes")
	else : print("No")
else : print("No")

Solution (Python):
s=raw_input()
if s[:4] == 'YAKI':
    print 'Yes'
else:
    print 'No'

Solution (Python):
s=input()
if s[:4]=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
print('YNeos'[input()[:4]!='YAKI'::2])

Solution (Python):
if input()[:4]=="YAKI":
  print("Yes")
else:
  print("No")

Solution (Python):
s=input()
print("Yes"if(s[:4]=="YAKI")else"No")

Solution (Python):
print(["No","Yes"][input()[0:4]=="YAKI"])

Solution (Python):
s = input()
if len(s)>=4 and s[:4] == 'YAKI':
    print("Yes")
else:
    print("No")

Solution (Python):
if str.lower(input())[:4] == "yaki":
  print("Yes")
else:
  print("No")

Solution (Python):
s=raw_input().strip()
print 'Yes' if s[:4]=="YAKI" else 'No'

Solution (Python):
S=raw_input()
print "Yes" if len(S)>=4 and S[:4]=="YAKI" else "No"

Solution (Python):
N = input()
if N.startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
if s[0:4]=='YAKI' :
  print('Yes')
else :
  print('No')

Solution (Python):
s = input()
if len(s) > 3:
    if s[:4] == "YAKI":
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
import sys
st = input()
if len(st) < 4:
    print('No')
    sys.exit()
if st[0] == 'Y':
    if st[1] == 'A':
        if st[2] == 'K':
            if st[3] == 'I':
                print('Yes')
            else:
                print('No')
        else:
            print('No')
    else:
        print('No')
else:
    print('No')

Solution (Python):


s=input()
if s[0:4]=="YAKI":
        print("Yes")
else:
        print("No")

Solution (Python):
S = input()

if S[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
try:
    if S[:4] == "YAKI": print("Yes")
    else: print("No")
except IndexError:
    print("No")

Solution (Python):
s = input()		

if s.find("YAKI") == 0:
	print("Yes")
else:
	print("No")

Solution (Python):
s = input()
a = 'YAKI'
ans = 0
if len(s) >= 4:
    for i in range(4):
        if s[i] == a[i]:
            ans = 1
        else:
            ans = 0
            break
if ans == 1:
    print('Yes')
else:
    print('No')

Solution (Python):
S=input().strip()
if S.find("YAKI")==0:
    print("Yes")
else:
    print("No")

Solution (Python):
def isYaki(S):
    if len(S) < 4:
        return 'No'
    
    answer = 'YAKI'
    for (a, b) in zip(answer, S):
        if a != b:
            return 'No'
    return 'Yes'

if __name__ == '__main__':
    S = input()
    print(isYaki(S))

Solution (Python):
from sys import stdin
s = stdin.readline().strip()
ans = 'No'
if s.startswith('YAKI'):
 ans = 'Yes'
print ans

Solution (Python):
s=raw_input()
if len(s)>=4 and s[0:4]=='YAKI': print 'Yes'
else: print 'No'

Solution (Python):
import sys

s = sys.stdin.readline().strip()

if len(s) >= 4 and s[:4] == 'YAKI':
    sys.stdout.write('Yes')
else:
    sys.stdout.write('No')

Solution (Python):

def main():
	s = input()
	if s[0:4] == "YAKI":
		print("Yes")
	else:
		print("No")

if __name__ == '__main__':
	main()

Solution (Python):
S = input()
if len(S) >= 4:
    if S[:4] == "YAKI":
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
print "Yes" if raw_input().startswith("YAKI") else "No"

Solution (Python):
s = raw_input()

tmp = "YAKI"

if s.find(tmp) != 0:
    print "No"
else:
    print "Yes"

Solution (Python):
s = (raw_input())

if s.startswith('YAKI'):
    print "Yes"
else:
    print "No"

Solution (Python):
s = (raw_input())

if s.startswith('YAKI'):
    print "Yes"
else:
    print "No"

Solution (Python):
s= input()
if len(s)>3 and s[0]=='Y' and  s[1]=='A' and s[2]=='K' and s[3]=='I':
    print("Yes")
else:
    print("No")

Solution (Python):
print("Yes" if input().startswith("YAKI") else "No")

Solution (Python):
s = input()
if len(s) <= 3:
	print('No')
else:
	if s[0] == 'Y' and s[1] == 'A' and s[2] == 'K' and s[3] == 'I':
		print('Yes')
	else:
		print('No')

Solution (Python):


S = input()

S = S[0:4]

if "YAKI" in S:
	print("Yes")

else:
	print("No")

Solution (Python):
import sys
import socket

hostname = socket.gethostname()

if hostname == 'F451C':
    sys.stdin = open('a1.in')


def read_int_list():
    return list(map(int, input().split()))


def read_str_list():
    return input().split()


def read_int():
    return int(input())


def read_str():
    return input()


def main():
    s = read_str()
    if s[0:4] == 'YAKI':
        print('Yes')
    else:
        print('No')


main()

Solution (Python):
s = input()
print('Yes' if s[:4] == 'YAKI' else 'No')

Solution (Python):
s = input()
if s.startswith('YAKI'):print("Yes")
else:print("No")

Solution (Python):
S = raw_input()
if (S[0:4] == "YAKI"):
    print "Yes"
else:
    print "No"

Solution (Python):
a=input()
if a[0:4]=="YAKI":
  print("Yes")
else:
  print("No")

Solution (Python):
a = str(raw_input())
if a[0:4] == 'YAKI':
    print 'Yes'
else:
    print 'No'

Solution (Python):
def main():
    S = input()
    
    n = "YAKI"
    
    if(S[:4] == n):
        print("Yes")
    else:
        print("No")
    
if __name__=="__main__":
    main()

Solution (Python):

import sys

s = input()

if len(s) < 4:
    print("No")
    sys.exit()
if s[0]=='Y' and s[1]=='A' and s[2] == 'K' and s[3] == 'I':
    print("Yes")
else:
    print("No")

Solution (Python):
if input().startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):
import sys

print 'Yes' if sys.stdin.readline().startswith('YAKI') else 'No'

Solution (Python):
mystr=input()
if mystr.startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):
import re
s = input()
if re.match('YAKI', s):
    print('Yes')
else:
    print('No')

Solution (Python):
print("Yes" if input()[0:4] == "YAKI" else "No")

Solution (Python):
print('Yes' if input()[:4] == 'YAKI' else 'No')

Solution (Python):
str=input()

if str[0:4]=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
def solution():
	s = list(input().strip())
	if len(s) < 4:
		print('No')
	else:
		s = ''.join(s[:4])
		if s == 'YAKI':
			print('Yes')
		else:
			print('No')



solution()

Solution (Python):
s=raw_input()
print "Yes" if s.startswith("YAKI") else "No"

Solution (Python):
s = input()

txt = "YAKI"

for i in range(4):
    if(len(s) < 4):
        flag = 0
        break
    if(s[i] == txt[i]):
        flag = 1
    else:
        flag = 0
        break

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

Solution (Python):

"""
Created on Sat Sep 23 21:05:25 2017

@author: taichiNakamura
"""

S = input()

def main(S):
    if len(S) < 4:
        return 'No'
    if S[:4] == 'YAKI':
        return 'Yes'
    else:
        return 'No'

print(main(S))

Solution (Python):
S = input()
res = 'No'
if S[0:4] == 'YAKI':
  res = 'Yes'

print(res)

Solution (Python):
def func() :
    s=input()
    if len(s) >= len('YAKI') :
        if s[:4] == 'YAKI' :
            print('Yes')
            return
    print('No')
func()

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

    try:
        if S.index('YAKI'):
            ans = 'No'
        else:
            ans = 'Yes'
    except:
        ans = 'No'

    print(ans)

main()

Solution (Python):

str = input()
check = str.find("YAKI")
if check == 0:
    print("Yes")
else:
    print("No")

Solution (Python):
s = [d for d in input()]
if len(s)>=4:
    if s[0]=='Y' and s[1]=='A' and s[2]=='K' and s[3]=='I':
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
i = input()

if len(i) < 4:
    print('No')
elif i[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
s = list(input())
 
if 4 <= len(s) and s[:4] == list("YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
s=input()
try:
    if s[0]=="Y" and s[1]=="A" and s[2]=="K" and s[3]=="I":
      print("Yes")
    else:
        print("No")
except:
    print("No")

Solution (Python):
if input()[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s = list(input())
if len(s) < 4:
    print('No')
    exit()

if s[0] == 'Y' and s[1] == 'A' and s[2] == 'K' and s[3] == 'I':
    print('Yes')
else:
    print('No')

Solution (Python):
n = input()
if n.endswith('YAKI', 0, 4):
  print('Yes')
else:
  print('No')

Solution (Python):


s = input()
l = s.split("I")
if(l[0] == "YAK" and len(s) > 3):
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
if s[0:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
if len(s) >= 4 and s[:4] == 'YAKI':
	print('Yes')
else:
	print('No')

Solution (Python):


dish = input()
if dish[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()

s=s[:4]

if s=="YAKI": print("Yes")
else: print("No")

Solution (Python):
nyuuryoku = input()

if nyuuryoku[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
print('Yes' if s.startswith('YAKI') else 'No')

Solution (Python):
inn = input()
ans = "No"
try:
    if inn[0] == "Y" and inn[1] == "A" and inn[2] == "K" and inn[3] == "I":
        ans = "Yes"
except:
    pass
print(ans)

Solution (Python):
s=input()
if(len(s)>=4):
    if(s[0]=="Y" and s[1]=="A" and s[2]=="K" and s[3]=="I"):
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):

S = raw_input()
if S[:4] == 'YAKI':
    print 'Yes'
else:
    print 'No'

Solution (Python):
s=input()

if len(s)>=4:
 if s[0]=="Y" and s[1]=="A" and s[2]=="K"  and s[3]=="I" :
  print("Yes")
 else:
  print("No")
else:
 print("No")

Solution (Python):
s = str(input())
if len(s) > 3:
    if s[:4] == "YAKI":
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
S = input()
if len(S) < 4:
    print("No")
elif S[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
import copy
import sys
from math import *

def get_read_func(fileobject):
    if fileobject == None :
        return raw_input
    else:
        return fileobject.readline


def main():
    if len(sys.argv) > 1:
        f = open(sys.argv[1])
    else:
        f = None
    read_func = get_read_func(f);
    S = read_func().strip()
    if len(S) >= 4 and S[0:4] == "YAKI":
        print "Yes"
    else:
        print "No"

if __name__ == '__main__':
    main()

Solution (Python):
s=raw_input()
if s[:4] == 'YAKI':
    print 'Yes'
else:
    print 'No'

Solution (Python):
s = input()

if 'YAKI' in s[0:4]:
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
if S[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):


s = input()
if (len(s)>3 and s[:4]=="YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
import sys
import socket

if socket.gethostname() == 'N551J':
    sys.stdin = open('a1.in')


def read_int_list():
    return list(map(int, input().split()))


def read_int():
    return int(input())


def read_str_list():
    return input().split()


def read_str():
    return input()


def solve():
    if read_str().startswith('YAKI'):
        return 'Yes'
    return 'No'

def main():
    res = solve()
    print(res)


if __name__ == '__main__':
    main()

Solution (Python):
a = raw_input()
if a[:4] == "YAKI":
	print "Yes"
else:
	print "No"

Solution (Python):
s = raw_input()

if s.startswith("YAKI"):
    print "Yes"
else:
    print "No"

Solution (Python):

import re
s = input()
if re.findall('^YAKI',s):
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
if(len(S) >= 4 and S[:4] == "YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
S = raw_input()

if S.find("YAKI") == 0:
  print 'Yes'
else:
  print 'No'

Solution (Python):
s = raw_input()
if 4 <= len(s) and s[0:4] == "YAKI":
	print "Yes"
else:
	print "No"

Solution (Python):



s = raw_input()

q = "YAKI"

if s[0:4] == q:
    print "Yes"
else:
    print "No"

Solution (Python):
n = input()
if(n[:4] == "YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):


S = input()

if(len(S) < 4):
    print("No")
    quit()

if(S[0] == "Y" and S[1] == "A" and S[2] == "K" and S[3] == "I"):
    print("Yes")
else:
    print("No")

Solution (Python):
def solve():
    s = list(input())
    if "".join(s[:4]) == "YAKI":
        print("Yes")
    else:
        print("No")


solve()

Solution (Python):
present = input()
if(present[:4] == 'YAKI'):
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
S = S[0:4]
if S=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
if s[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S=raw_input()
if len(S)>3:
    if S[:4]=="YAKI":
        print "Yes"
    else:
        print "No"
else:
    print "No"

Solution (Python):



s = list(str(input()))

if len(s) >= 4:
    if s[0] == 'Y' and s[1] == 'A' and s[2] == 'K' and s[3] == 'I':
        print('Yes')
    else:
        print('No')
else:
    print('No')

Solution (Python):
s = input()
print(s.startswith("YAKI") and "Yes" or "No")

Solution (Python):
print "Yes" if raw_input().startswith("YAKI") else "No"

Solution (Python):

print("Yes" if input()[:4]=='YAKI' else 'No')

Solution (Python):
print(("Yes" if input()[0:4] == 'YAKI' else "No"))

Solution (Python):
def read(): return list(map(int, input().split()))


def main():
    s = input()
    if len(s) < 4:
        print("No")
        return

    for i in range(4):
        if s[i] != "YAKI"[i]:
            print("No")
            return

    print("Yes")


if __name__ == '__main__':
    main()

Solution (Python):



s = input()
if(len(s) < 4) : print("No")
else:
    if(s[0:4] == "YAKI") : print("Yes")
    else:print("No")

Solution (Python):







yes = "Yes"
s = input()
ans = "YAKI"

if len(s) >= 4:
    if s[:4] == ans:
        print("Yes")
    else:
        print("No")
else:
    print("No")

Solution (Python):
value = input()

if value[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):



s = input()
head = s[:4]

if head == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
print("Yes" if input().startswith("YAKI") else "No")

Solution (Python):
string = input()
if len(string) < 4:
    print("No")
elif string[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):

def II(): return int(input())
def ILI(): return list(map(int, input().split()))


def read():
    S = str(input())
    return (S,)


def solve(S):
    if len(S) < 4:
        return "No"
    if "".join(S[0:4]) == "YAKI":
        return "Yes"
    else:
        return "No"


def main():
    params = read()
    print(solve(*params))


if __name__ == "__main__":
    main()

Solution (Python):
s = input()
if len(s) >= 4 and s[:4] == "YAKI":
	print("Yes")
else:
	print("No")

Solution (Python):



import array
from bisect import *
from collections import *
import fractions
import heapq 
from itertools import *
import math
import re
import string

S = input()
if S.startswith('YAKI'):
    print("Yes")
else:
    print("No")

Solution (Python):

"""
Created on Sat Sep 23 20:49:53 2017

@author: thvinmei
"""

if __name__ == '__main__':
    S=input()
    
    if (S[0:4]=="YAKI"):
        print("Yes")
    else:
        print("No")

Solution (Python):
INF = 999999999999999999L
try:
    inFile = open("A.txt")
except:
    inFile = None

def read():
    if inFile:
        return inFile.readline().strip()
    else:
        return raw_input().strip()

def read_ints():
    return map(int,read().split())

s = read()
if s.startswith("YAKI"):
    print "Yes"
else:
    print "No"

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

if s[:4] == 'YAKI':
  print('Yes')
else:
  print('No')

Solution (Python):
print("Yes" if input().startswith("YAKI") else "No")

Solution (Python):
S = input()
if S[0:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S=input()
print( 'Yes' if len(S) >= 4 and S[0:4] == 'YAKI' else 'No')

Solution (Python):
S = input()
ans = S[0:4]
if ans == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
print('No' if len(s) < 4 or 'YAKI' != s[:4] else 'Yes')

Solution (Python):
if __name__ == '__main__':
    S = input()
    if S[:4] == "YAKI":
        print("Yes")
    else:
        print("No")

Solution (Python):

import heapq
import math

tmp = input()
ans = False
if len(tmp) >= 4 and tmp[:4] == 'YAKI':
    ans = True
print('Yes' if ans else 'No')

Solution (Python):
print('Yes' if input()[:4] == 'YAKI' else 'No')

Solution (Python):
i = input()
if i[:4] == "YAKI":
 print("Yes")
else:
 print("No")

Solution (Python):
x = input()
if x.startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):
s = raw_input()
while (len(s) < 10):
    s += "

if s[0:4] == "YAKI":
    print "Yes"
else:
    print "No"

Solution (Python):


s = input()
if s.startswith('YAKI'):
    print("Yes")
else:
    print("No")

Solution (Python):















def main():
    print("Yes" if input().strip().startswith("YAKI") else "No")

main()

Solution (Python):
S=input()
if S[:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
s = input()
print('Yes' if 'YAKI' == s[0:min(4, len(s))] else 'No')

Solution (Python):
print("Yes" if input()[0:4]=="YAKI" else "No")

Solution (Python):
S = input()
if S[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()
if s.find("YAKI") == 0:
    print("Yes")
else:
    print("No")

Solution (Python):
s = input()

if(len(s)< 4):
    print("No")
elif(s[:4] == "YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):

def inpl(): return tuple(map(int, input().split()))
text = input()

if text[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):

def get_ln_inputs():
    return input().split()


def get_ln_int_inputs():
    return list(map(int, get_ln_inputs()))


def main():
    S = get_ln_inputs()[0]
    if S[:4] == 'YAKI':
        print("Yes")
    else:
        print("No")
    return


main()

Solution (Python):
print 'Yes' if raw_input().startswith('YAKI') else 'No'

Solution (Python):


print("Yes" if input()[:4]=='YAKI' else 'No')

Solution (Python):
if raw_input().startswith('YAKI'):
  print 'Yes'
else:
  print 'No'

Solution (Python):
s = input()
if(s[:4] == "YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
s = raw_input()
if s[:4] == 'YAKI':
	print 'Yes'
else:
	print 'No'

Solution (Python):
s = input()
if s[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
S = raw_input()
if S.startswith("YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()
print('Yes' if S[:4] == 'YAKI' else 'No')

Solution (Python):
S = input()

if S[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
from math import *


def main():
        s = input()
        if s[:4] == 'YAKI':
                print('Yes')
        else:
                print('No')
        

if __name__ == '__main__':
        main()

Solution (Python):
S = input()
if S[0:4] == 'YAKI':
    print('Yes')
else:
    print('No')

Solution (Python):
S = input()
if S[:4] == "YAKI": print("Yes")
else: print("No")

Solution (Python):





def main():
    S = input()

    print("Yes" if S.startswith("YAKI") else "No")

if __name__ == "__main__": main()

Solution (Python):
S = input()

if S[:4]=="YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):
x = raw_input()
if x.startswith('YAKI'):
    print "Yes"
else:
    print "No"

Solution (Python):
S = raw_input()
if S[:4] == "YAKI":
    print "Yes"
else:
    print "No"

Solution (Python):
S = raw_input()

if S[:4] == "YAKI":
    print "Yes"
else:
    print "No"

Solution (Python):
a=raw_input()
if a[:4] == 'YAKI':
  print 'Yes'
else:
  print 'No'

Solution (Python):
s = raw_input()
if s.startswith("YAKI"):
  print("Yes");
else :
  print("No")

Solution (Python):



from __future__ import division, print_function
import sys


def main():
    print("Yes" if sys.stdin.readline().strip().startswith("YAKI") else "No")


if __name__ == '__main__':
    main()

Solution (Python):
a = input()
if(a[:4] == "YAKI"): print("Yes")
else: print("No")

Solution (Python):
S = input()
if S[:4] == "YAKI":
    print("Yes")
else:
    print("No")

Solution (Python):


if input().startswith("YAKI"):
    print("Yes")
else:
    print("No")

Solution (Python):
S = input()

if S.startswith("YAKI"):
  print('Yes')
else:
  print('No')

Solution (Python):
S = input()
print("Yes" if S[:4] == "YAKI" else "No")

Solution (Python):
print 'Yes' if raw_input().startswith('YAKI') else "No"

Solution (Python):
print('Yes' if input().startswith('YAKI') else 'No')

Solution (Python):
S = input()

if S.startswith('YAKI'):
    print('Yes')
else:
    print('No')

Solution (Python):
print("Yes" if input()[:4] == "YAKI" else "No")

Solution (Python):
print 'Yes' if raw_input().startswith('YAKI') else 'No'

Solution (Python):
s = input()
if s[:4] == "YAKI":
  print("Yes")
else:
  print("No")

Solution (Python):


s = input()

if s.startswith("YAKI"):
    print("Yes")

else:
    print("No")