Problem:
 Score : 100 points    Problem Statement You will turn on the air conditioner if, and only if, the temperature of the room is 30 degrees Celsius or above.  The current temperature of the room is X degrees Celsius. Will you turn on the air conditioner?      Constraints  -40 \leq X \leq 40  X is an integer.         Input Input is given from Standard Input in the following format:  X       Output Print Yes if you will turn on the air conditioner; print No otherwise.        Sample Input 1 25      Sample Output 1 No       Sample Input 2 30      Sample Output 2 Yes

Solution (Python):
import sys, bisect, math, itertools, string, queue, copy
import numpy as np
import scipy
from collections import Counter,defaultdict,deque
from itertools import permutations, combinations
from heapq import heappop, heappush
from fractions import gcd
input = sys.stdin.readline
sys.setrecursionlimit(10**8)
mod = 10**9+7
def inp(): return int(input())
def inpm(): return map(int,input().split())
def inpl(): return list(map(int, input().split()))
def inpls(): return list(input().split())
def inplm(n): return list(int(input()) for _ in range(n))
def inplL(n): return [list(input()) for _ in range(n)]
def inplT(n): return [tuple(input()) for _ in range(n)]
def inpll(n): return [list(map(int, input().split())) for _ in range(n)]
def inplls(n): return sorted([list(map(int, input().split())) for _ in range(n)])

x = inp()
ans = 'No'
if x >= 30:
    ans = 'Yes'

print(ans)

Solution (Python):
print ('Yes' if input() >= 30 else 'No')

Solution (Python):
X = int(input())

ans = 'Yes' if X >= 30 else 'No'
print(ans)

Solution (Python):
X = int(input())

if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())

if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if(X >= 30):
  print("Yes")
else:
  print("No")

Solution (Python):
def main():
    X = int(input())
    if X >= 30:
        print('Yes')
    else:
        print('No')

if __name__ == "__main__":
    main()

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
print("Yes" if int(input()) >= 30 else "No")

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

ans = 0
cnt = 0
if n >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
def main():
    x = int(input())
    if x >= 30:
        print('Yes')
    else:
        print('No')
   
    
if __name__ == '__main__':
    main()

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X=int(input())

if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
x=int(input())
if x>=30:print('Yes')
else:print('No')

Solution (Python):
n=int(input())
if n>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
n=int(input())
if n>=30:
  print("Yes")
else:
  print("No")

Solution (Python):
x = int(input())

if x > 29:
    print('Yes')
else:
    print('No')

Solution (Python):




x = int(input())







if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
print('Yes' if x >= 30 else 'No')

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):

X = int(input())


print("Yes" if X>= 30 else "No")

Solution (Python):
print('Yes') if int(input()) >= 30 else print('No')

Solution (Python):
X = int(input())
print('Yes' if X >= 30 else 'No')

Solution (Python):
print("Yes" if int(input()) >= 30 else "No")

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):

X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
print('Yes' if int(input()) >= 30 else 'No')

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x >= 30:
	print("Yes")
else:
  print("No")

Solution (Python):
def resolve():
    x = int(input())
    if x>=30:
        print("Yes")
    else:
        print("No")
resolve()

Solution (Python):
x = int(input())
if x >= 30:
    ans = "Yes"
else:
    ans = "No"
print(ans)

Solution (Python):
N = int(input())

if N >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
if int(input()) >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
if int(input())>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
import sys


inint = lambda: int(sys.stdin.readline())
inintm = lambda: map(int, sys.stdin.readline().split())
inintl = lambda: list(inintm())
instr = lambda: sys.stdin.readline()
instrm = lambda: map(str, sys.stdin.readline().split())
instrl = lambda: list(instrm())

x = inint()

if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
n = int(input())
if n >= 30:
  ans = 'Yes'
else:
  ans = 'No'
print(ans)

Solution (Python):
X = int(input())

if X>=30:
   print("Yes")
else:
   print("No")

Solution (Python):


X = int(input())
if X >=30:
    print('Yes')
else:
    print('No')

Solution (Python):
print('Yes' if int(input()) >= 30 else 'No')

Solution (Python):
a = int(input())
print(['No', 'Yes'][a >= 30])

Solution (Python):
N = int(input())
if N < 30:
  print("No")
else:
  print("Yes")

Solution (Python):
x=int(input())
if x>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):

x = int(input())
if x>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
n = int(input())
if n>=30:
  print("Yes")
else:
  print("No")

Solution (Python):
def main():
    X = int(input())

    if X >= 30:
        print("Yes")
    else:
        print("No")

if __name__ == "__main__":
    main()

Solution (Python):


x = int(input())

if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x=int(input())
print("Yes" if x >=30 else "No")

Solution (Python):
print(["No", "Yes"][int(input()) >= 30])

Solution (Python):
X = int(input())

if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
print(['No','Yes'][X>=30])

Solution (Python):
X=int(input())

if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
import sys
import math
import numpy as np
def I():return int(sys.stdin.readline().replace("\n",""))
def I2():return map(int,sys.stdin.readline().replace("\n","").split())
def S():return str(sys.stdin.readline().replace("\n",""))
def L():return list(sys.stdin.readline().replace("\n",""))
def Intl():return [int(k) for k in sys.stdin.readline().replace("\n","").split()]
def Lx(k):return list(map(lambda x:int(x)*-k,sys.stdin.readline().replace("\n","").split()))

if __name__ == "__main__":
    x = I()
    print("Yes" if x >= 30 else "No")

Solution (Python):
N = int(input())

if N >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())

if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())

if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
S=int(input())
if S>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if(X>=30):
  print("Yes")
else:
  print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else: print("No")

Solution (Python):
x = int(input())
if x < 30:
    print("No")
else:
    print("Yes")

Solution (Python):
N = int(input())

if N >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
r = 'Yes' if X >= 30 else 'No'
print(r)

Solution (Python):
X = int(input())

if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())

print('Yes' if x >= 30 else 'No')

Solution (Python):
N=int(input())
if N>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
if x>=30:
  print("Yes")
else:
  print("No")

Solution (Python):

n = int(input())
if n>=30:
     print('Yes')
else:
     print('No')

Solution (Python):
s = int(input())
if s >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
def main():
    print('Yes' if int(input()) >= 30 else 'No')

main()

Solution (Python):
def resolve():
    '''
    code here
    '''
    X = int(input())

    if X >= 30:
        print('Yes')
    else:
        print('No')


if __name__ == "__main__":
    resolve()

Solution (Python):
X = int(input())

if X >= 30:
  print("Yes")
else:
  print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
print("Yes" if int(input()) >= 30 else "No")

Solution (Python):
import sys
def input(): return sys.stdin.readline().strip()



def main():
    N = int(input().strip())
    if N >= 30:
        print("Yes")
    else:
        print("No")

    return


if __name__ == "__main__":
    main()

Solution (Python):
x = int(input())
if x < 30:
  print("No")
else:
  print("Yes")

Solution (Python):
N = int(input())
if N >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
import sys, math
import io, os

from bisect import bisect_left as bl, bisect_right as br, insort
from heapq import heapify, heappush, heappop
from collections import defaultdict as dd, deque, Counter

def data(): return sys.stdin.readline().strip()
def mdata(): return list(map(int, data().split()))
def outl(var) : sys.stdout.write(' '.join(map(str, var))+'\n')
def out(var) : sys.stdout.write(str(var)+'\n')
from decimal import Decimal
from fractions import Fraction

INF = float('inf')
mod = int(1e9)+7


x=int(data())
if x>=30:
    out("Yes")
else:
    out("No")

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
import math

x = int(input())

if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
def main():
    X = int(input())
    if X >= 30:
        print("Yes")
    else:
        print("No")


if __name__ == "__main__":
    main()

Solution (Python):
X = int(input())

if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
if int(input()) >= 30:
  print("Yes")
else:
  print("No")

Solution (Python):
import sys












stdin = sys.stdin
sys.setrecursionlimit(10 ** 7)
MIN = -10 ** 9
MOD = 10 ** 9 + 7
INF = float("inf")
IINF = 10 ** 18

def solve():
    x = int(stdin.readline().rstrip())
    
    
    
    
    
    
    if x >= 30:
        print("Yes")
    else:
        print("No")

if __name__ == '__main__':
    solve()

Solution (Python):
import math
import fractions
import collections
import itertools
X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
x=int(input())

if x>=30:
  print("Yes")
else:
  print("No")

Solution (Python):
x = int(input())

if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):

import numpy as np
import sys
from collections import deque
from collections import defaultdict
import heapq
import collections
import itertools
import bisect
from scipy.special import comb
import copy
sys.setrecursionlimit(10**6)




def zz():
    return list(map(int, sys.stdin.readline().split()))


def z():
    return int(sys.stdin.readline())


def S():
    return sys.stdin.readline()[:-1]


def C(line):
    return [sys.stdin.readline() for _ in range(line)]


X = z()
if(X >= 30):
    print('Yes')
else:
    print('No')

Solution (Python):
import sys
def I(): return int(sys.stdin.readline().rstrip())
X = I()
print('Yes' if X>=30 else 'No')

Solution (Python):


import sys
iim = lambda: map(int, sys.stdin.readline().rstrip().split())

def resolve():
    X = int(input())

    print("Yes" if X >= 30 else "No")

if __name__ == "__main__":
    resolve()

Solution (Python):
def main():
    x=int(input())
    if x>=30:
        print("Yes")
    else:
        print("No")

if __name__=="__main__":
    main()

Solution (Python):
N=int(input())

if N > 29:
    print('Yes')
else:
    print('No')

Solution (Python):





def int_mtx(N):
    x = []
    for _ in range(N):
        x.append(list(input()))
    return x

def int_map():
    return map(int,input().split())

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

def print_space(l):
    return print(" ".join([str(x) for x in l]))


import numpy as np




X = int(input())

if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):

x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
print("Yes" if int(input())>=30 else "No")

Solution (Python):
X = int(input())
if X>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
def main():
    X = int(input())
    if X >= 30:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
import sys


def main():
    input = sys.stdin.buffer.readline
    x = int(input())
    print("Yes" if x >= 30 else "No")


if __name__ == "__main__":
    main()

Solution (Python):

import sys;input = sys.stdin.readline
inp,ip = lambda :int(input()),lambda :[int(w) for w in input().split()]

n = inp()
if n >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
print('YNeos'[int(input())<30::2])

Solution (Python):
import sys
import math
import itertools
import bisect
from copy import copy
from collections import deque,Counter
from decimal import Decimal
def s(): return input()
def i(): return int(input())
def S(): return input().split()
def I(): return map(int,input().split())
def L(): return list(input().split())
def l(): return list(map(int,input().split()))
def lcm(a,b): return a*b//math.gcd(a,b)
sys.setrecursionlimit(10 ** 9)
INF = 10**9
mod = 10**9+7

X = i()
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X=int(input())
if X>=30:print('Yes')
else:print('No')

Solution (Python):
(N, ) = [int(n) for n in input().split()]

print('Yes' if N >= 30 else 'No')

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())

ans = 0
if X >= 30:
    ans = "Yes"
else:
    ans = "No"
print(ans)

Solution (Python):


X=int(input())

if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
def solve():
    X = int(input())
    if X >= 30:
        print('Yes')
    else:
        print('No')


if __name__ == "__main__":
    solve()

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

if n >= 30:
    print('Yes');
else:
    print('No');

Solution (Python):
N = int(input())
print('Yes' if N >= 30 else 'No')

Solution (Python):
X=int(input())
if X>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
a = int(input())

if a >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
a=int(input())
if a>=30:
  print("Yes")
else:
  print("No")

Solution (Python):
x=int(input())
if x>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
x=int(input())
if x>=30:print('Yes')
else:print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):

x = int(input())

print('Yes' if x >= 30 else 'No')

Solution (Python):




def input_int():
    return int(input())



def int1(x):
    return int(x) - 1



def input_to_int_map():
    return map(int, input().split())



def input_to_int_tuple():
    return tuple(map(int, input().split()))



def input_to_int_tuple_minus1():
    return tuple(map(int1, input().split()))


def main():
    x = int(input())

    if x >= 30:
        return "Yes"
    return "No"


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

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())

print('Yes') if x >= 30 else print('No')

Solution (Python):
print(['No','Yes'][int(input())>=30])

Solution (Python):
import sys
from io import StringIO
import unittest


def resolve():
    
    n = int(input())
    
    

    if n >= 30:
        print('Yes')
    else:
        print('No')


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 = """25"""
        output = """No"""
        self.assertIO(input, output)

    def test_入力例_2(self):
        input = """30"""
        output = """Yes"""
        self.assertIO(input, output)


if __name__ == "__main__":
    
    resolve()

Solution (Python):
X = int(input())
if(X>=30):
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
print("Yes" if X >= 30 else "No")

Solution (Python):
X = int(input())
if X >= 30: print("Yes")
else: print("No")

Solution (Python):

X = int(input())
if X >= 30:
  print("Yes")
else:
  print("No")

Solution (Python):
i = int(input())
if i>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
a=int(input())
if a>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
def main():
    x = int(input())
    if x >= 30:
        print("Yes")
    else:
        print("No")

if __name__ == "__main__":
    main()

Solution (Python):
if int(input()) >= 30:
  print("Yes")
else:
  print("No")

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):

x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
N=int(input())
print("Yes" if N>=30 else "No")

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
n = int(input())
if (n >= 30):
    print("Yes")
else:
    print("No")

Solution (Python):
N = int(input())
if N >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())

if X >= 30:
  print("Yes")
else:
  print("No")

Solution (Python):
x=int(input())
print('Yes' if x >=30 else 'No')

Solution (Python):
x=int(input())
print('No'if x<30else'Yes')

Solution (Python):
X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
def main():
    X = int(input())
    if X >= 30:
        return "Yes"
    else:
        return "No"

if __name__ == '__main__':
    print(main())

Solution (Python):
print('Yes' if int(input())>=30 else 'No')

Solution (Python):
n = int(input())
print('Yes' if n >= 30 else 'No')

Solution (Python):
n = int(input())
if n>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
x = int(input())

if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
if int(input())>=30:
    print('Yes')
else:
    print('No')

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


def main():
    x = int(input())
    if x >= 30:
        print("Yes")
    else:
        print("No")


if __name__ == "__main__":
    main()

Solution (Python):
a=int(input())
if not a<30:
  print("Yes")
else:
  print("No")

Solution (Python):
import sys
def input(): return sys.stdin.readline().strip()
def mapint(): return map(int, input().split())
sys.setrecursionlimit(10**9)

X = int(input())
if X>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())

if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x=int(input())
if x>=30:
  print('Yes')
else:
  print('No')

Solution (Python):
X = int(input())

if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
print('Yes' if X >= 30 else 'No')

Solution (Python):
if int(input()) >= 30:
	print("Yes")
else:
	print("No")

Solution (Python):
X = int(input())

if X>=30:
    print('Yes')
else:
    print('No')

Solution (Python):


import sys
import math
import time

import collections
from collections import deque
from collections import Counter
import queue
import copy
import bisect
import heapq
import itertools











X = int(input())

if(X>=30):
  print("Yes")
else:
  print("No")

Solution (Python):
X=int(input())

if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
from heapq import heappush, heappop, heapify
from collections import deque, defaultdict, Counter
import itertools
from itertools import permutations, combinations, accumulate, product, combinations_with_replacement
import sys
import bisect
import string
import math
import time


def I(): return int(input())
def S(): return input()
def MI(): return map(int, input().split())
def MS(): return map(str, input().split())
def LI(): return [int(i) for i in input().split()]
def LI_(): return [int(i)-1 for i in input().split()]
def StoI(): return [ord(i)-97 for i in input()]
def ItoS(nn): return chr(nn+97)
def input(): return sys.stdin.readline().rstrip()
def list2d(a, b, c): return [[c] * b for i in range(a)]
def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)]
def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)]
def print_matrix(mat):
    for i in range(len(mat)):
        print(*['IINF' if v == IINF else "{:0=4}".format(v) for v in mat[i]])


yn = {False: 'No', True: 'Yes'}
YN = {False: 'NO', True: 'YES'}
MOD = 10**9+7
inf = float('inf')
IINF = 10**19
l_alp = string.ascii_lowercase
u_alp = string.ascii_uppercase
ts = time.time()
sys.setrecursionlimit(10**6)
nums = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
show_flg = False



def main():
    X = I()

    if X >= 30:
        print('Yes')
    else:
        print('No')


if __name__ == '__main__':
    main()

Solution (Python):
score = int(input())
if score >= 30:
    print('Yes')
else:
    print('No')

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

if 30 <= n:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())

if(X >= 30):
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())

if 30<=X:
  print("Yes")
else:
  print("No")

Solution (Python):
import sys, re
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, tan, asin, acos, atan, radians, degrees, log2, gcd
from itertools import accumulate, permutations, combinations, combinations_with_replacement, product, groupby
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from bisect import bisect, bisect_left, insort, insort_left
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(int, input().split()))
def TUPLE(): return tuple(map(int, input().split()))
def ZIP(n): return zip(*(MAP() for _ in range(n)))
sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7 

from decimal import *



X = INT()
print("Yes" if X >= 30 else "No")

Solution (Python):
x=int(input())
if x>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
n=input()
if n>=30:
    print "Yes"
else:
    print "No"

Solution (Python):
x=int(input())
if x>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
N = int(input())
if N >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X = int(input())
print("Yes" if X>=30 else "No")

Solution (Python):
import sys,queue,math,copy,itertools,bisect,collections,heapq

def main():
    sys.setrecursionlimit(10**7)
    INF = 10**18
    MOD = 10**9 + 7
    LI = lambda : [int(x) for x in sys.stdin.readline().split()]
    _LI = lambda : [int(x)-1 for x in sys.stdin.readline().split()]
    NI = lambda : int(sys.stdin.readline())
    SI = lambda : sys.stdin.readline().rstrip()

    x = NI()
    if x >= 30:
        print('Yes')
    else:
        print('No')

if __name__ == '__main__':
    main()

Solution (Python):
print('Yes' if int(input()) >= 30 else 'No')

Solution (Python):
N = int(input())
if(N >= 30):
  print("Yes")
else:
  print("No")

Solution (Python):
N=int(input())
if N>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
def yn(P):
    if P:
        print("Yes")
    else:
        print("No")
yn(int(input())>=30)

Solution (Python):
X = int(input())

if (X >= 30):
    print('Yes')
else:
    print('No')

Solution (Python):
a=int(input())
if a>=30 :
  print('Yes')
else :
  print('No')

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())

if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
n = int(input())
if n >= 30:
    print('Yes')
else:
    print('No')

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

if n >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x=int(input())

print('Yes') if x>29 else print('No')

Solution (Python):
N = int(input())
if N >= 30:
	print("Yes")

else:
	print("No")

Solution (Python):
import os
import sys
from io import BytesIO, IOBase






def main():
    t = int(input())
    print('Yes' if t>=30 else "No")
        
        
        
        





































BUFSIZE = 8192
class FastIO(IOBase):
    newlines = 0
    def __init__(self, file):
        self._fd = file.fileno()
        self.buffer = BytesIO()
        self.writable = "x" in file.mode or "r" not in file.mode
        self.write = self.buffer.write if self.writable else None
 
    def read(self):
        while True:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            if not b:
                break
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines = 0
        return self.buffer.read()
 
    def readline(self):
        while self.newlines == 0:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            self.newlines = b.count(b"\n") + (not b)
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines -= 1
        return self.buffer.readline()
 
    def flush(self):
        if self.writable:
            os.write(self._fd, self.buffer.getvalue())
            self.buffer.truncate(0), self.buffer.seek(0)

class IOWrapper(IOBase):
    def __init__(self, file):
        self.buffer = FastIO(file)
        self.flush = self.buffer.flush
        self.writable = self.buffer.writable
        self.write = lambda s: self.buffer.write(s.encode("ascii"))
        self.read = lambda: self.buffer.read().decode("ascii")
        self.readline = lambda: self.buffer.readline().decode("ascii")
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")

 
if __name__ == "__main__":
    main()

Solution (Python):
X = int(input())
print("Yes") if X >= 30 else print("No")

Solution (Python):
X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):


import sys
stdin = sys.stdin

def ns(): return stdin.readline().rstrip()
def ni(): return int(ns())
def na(): return list(map(int, stdin.readline().split()))

def main():
    x = ni()
    print("Yes" if x >= 30 else "No")

if __name__ == "__main__":
    main()

Solution (Python):
X = int(input())

if X >= 30:
  print('Yes')
else:
  print('No')

Solution (Python):
X = int(input())

if(X >= 30):
    print("Yes")

else:
    print("No")

Solution (Python):
X=int(input())
if X>=30:
    print("Yes")
else:
    print("No")

Solution (Python):

x = int(input())
print("YNeos"[x<30::2])

Solution (Python):
X = int(input())
if X >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
ans = 'Yes' if int(input()) >= 30 else 'No'
print(ans)

Solution (Python):
X = int(input())

if 30 <= X:
    print('Yes')
else:
    print('No')

Solution (Python):
n = int(input())
if n >= 30:
    print("Yes")
    
else:
    print("No")

Solution (Python):
X = int(input())
if X >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):

import sys
import math
from bisect import bisect_left
from bisect import bisect_right
from collections import defaultdict
from heapq import heappop, heappush
import itertools
import random
from collections import deque
from decimal import *
import queue

input = sys.stdin.readline

def inputInt(): return int(input())
def inputMap(): return map(int, input().split())
def inputList(): return list(map(int, input().split()))
def inputStr(): return input()[:-1]

inf = float('inf')
mod = 1000000007




def main():
	N = inputInt()

	if N >= 30:
		print("Yes")
	else:
		print("No")

	




if __name__ == "__main__":
	main()

Solution (Python):
X = int(input())
print("Yes" if X >= 30 else "No")

Solution (Python):
if int(input())>=30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
if x >= 30:
  print('Yes')
else:
  print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
n = int(input())
if n >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
X = int(input())

if X >= 30:
    print ("Yes")
else:
    print ("No")

Solution (Python):
N = int(input())
if N >= 30: print("Yes")
else:print("No")

Solution (Python):
x = int(input())
if x >= 30:
    print("Yes")
else:
    print("No")

Solution (Python):
import math,itertools,fractions,heapq,collections,bisect,sys,queue,copy

sys.setrecursionlimit(10**7)
inf=10**20
mod=10**9+7
dd=[(-1,0),(0,1),(1,0),(0,-1)]
ddn=[(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]

def LI(): return [int(x) for x in sys.stdin.readline().split()]

def I(): return int(sys.stdin.readline())
def F(): return float(sys.stdin.readline())
def LS(): return sys.stdin.readline().split()
def S(): return input()

def main():
  x=I()
  if 30<=x:
    return 'Yes'
  return 'No'


print(main())

Solution (Python):
print('Yes' if int(input()) >= 30.00 else 'No')

Solution (Python):
s = int(input())
if s >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
print('Yes') if int(input()) >= 30 else print('No')

Solution (Python):
x = int(input())
if x >= 30:
    print('Yes')
else:
    print('No')

Solution (Python):
INT = lambda: int(input())
INTM = lambda: map(int,input().split())
STRM = lambda: map(str,input().split())
STR = lambda: str(input())
LIST = lambda: list(map(int,input().split()))
LISTS = lambda: list(map(str,input().split()))

def do():
    n=INT()
    if n>=30:
        print('Yes')
    else:
        print('No')

if __name__=='__main__':
    do()