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 itertools
from collections import deque,defaultdict,Counter
from itertools import accumulate
import bisect
from heapq import heappop,heappush,heapify
import math
from copy import deepcopy
import queue
import numpy as np

Mod = 1000000007
fact = [1, 1]
factinv = [1, 1]
inv = [0, 1] 
for i in range(2, 10**5 + 1):
    fact.append((fact[-1] * i) % Mod)
    inv.append((-inv[Mod % i] * (Mod // i)) % Mod)
    factinv.append((factinv[-1] * inv[-1]) % Mod)
    
def cmb(n, r, p):
    if (r < 0) or (n < r):
        return 0
    r = min(r, n - r)
    return fact[n] * factinv[r] * factinv[n - r] % p
    
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[y] = px
        else:
            self.parent[px] = py
 
    def same_group_or_no(self,x,y):
        return self.findroot(x) == self.findroot(y)
def pow_k(x, n):

    if n == 0:
        return 1

    K = 1
    while n > 1:
        if n % 2 != 0:
            K *= x
        x *= x
        n //= 2

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

if __name__ == '__main__':
    main()

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):
A = int(input())
if 30 <= A:
    print("Yes")
else:
    print("No")

Solution (Python):
T=int(input())
if T>=30:
    print('Yes')
else:
    print('No')

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

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

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

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

Solution (Python):
a = int(input())
if a >=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())
if X <= 29:
    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):
if int(input()) >= 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())
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 30 <= X:
    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')
    exit()
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:
  ans="Yes"
else:
  ans="No"
  
print(ans)

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())
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('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):
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())

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

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

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

Solution (Python):
a=input()

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

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

if input < 30:
  print("No")
else:
  print("Yes")

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

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

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

if x>=30:
    print('Yes')

else:
    print('No')

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


def main():
    t = int(si())
    if t >= 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):
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):
a = int(input())

if a >= 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):
def main():
    X = int(input())
    if X >= 30:
        print('Yes')
    else:
        print('No')
if __name__ == '__main__':
    main()

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

if 30 <= X:
    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:
    ans = "Yes"
else:
    ans = "No"

print(ans)

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 os
import sys
from io import BytesIO, IOBase


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")



def RL(): return map(int, sys.stdin.readline().rstrip().split())
def RLL(): return list(map(int, sys.stdin.readline().rstrip().split()))
def N(): return int(input())
def comb(n, m): return factorial(n) / (factorial(m) * factorial(n - m)) if n >= m else 0
def perm(n, m): return factorial(n) // (factorial(n - m)) if n >= m else 0
def mdis(x1, y1, x2, y2): return abs(x1 - x2) + abs(y1 - y2)
def toord(c): return ord(c)-ord('a')
def lcm(a, b): return a*b//lcm(a, b)
mod = 998244353
INF = float('inf')
from math import factorial, sqrt, ceil, floor, gcd
from collections import Counter, defaultdict, deque
from heapq import heapify, heappop, heappush






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

if __name__ == "__main__":
    main()

Solution (Python):
if int(input()) >= 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):
T = int(input())

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

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

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

if num >= 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())
if 30<=X:
    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 30 <= X:
        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(['No', 'Yes'][int(input()) >= 30])

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

Solution (Python):


X = int(input())


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


print(ans)

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

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

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

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

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

if( temp >= 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):
x = int(input())

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

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

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

Solution (Python):
if __name__ == '__main__':
    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):
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):
c = int(input())
if c >= 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):
a = int(input())
ans ="No"
if a >= 30:
    ans = "Yes"
print(ans)

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):
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):
i = int(input())

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

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

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

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

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

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

else:
	print("No")

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

cond = x >= 30

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

Solution (Python):
t = int(input())
if t < 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):
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):
if int(input())>=30:
  print('Yes')
else:
  print('No')

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

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

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

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

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):



import sys


def std_in():
    return sys.stdin.readline().strip()


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


if __name__ == "__main__":
    main()

Solution (Python):
import sys
import bisect
from functools import lru_cache
from collections import defaultdict
inf = float('inf')
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10**6)
def input(): return sys.stdin.readline().rstrip()
def read():
  return int(readline())
def reads():
  return map(int, readline().split())
X=read()
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())
if X>=30:
	print("Yes")
else:
	print("No")

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

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

Solution (Python):
import sys
import os



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


def str_array():
    return input().strip().split()

def gcd(a,b):
    if b == 0:
        return a
    return gcd(b, a % b);x

def take_input():
	if os.environ.get("check"):
		sys.stdin = open('input.txt', 'r') 
		sys.stdout = open('output.txt', 'w')
		
take_input()


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

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:
    ans = 'Yes'
else:
    ans = 'No'


print(ans)

Solution (Python):
from sys import stdin


def readline_from_stdin() -> str:
    return stdin.readline().rstrip


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

Solution (Python):
import sys
def Ii():return int(sys.stdin.readline())
def Mi():return map(int,sys.stdin.readline().split())
def Li():return list(map(int,sys.stdin.readline().split()))
x = Ii()
if x >= 30:
  print('Yes')
else:
  print('No')

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

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

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):
x = int(input())

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

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

Solution (Python):


import sys
import math


debug = False

def log(text):
    if debug:
        print(text)

def parse_input(lines_as_string = None):

    global debug
    lines = []
    if lines_as_string is None:
        debug = False
        for line in sys.stdin:
            lines.append(line.strip())
    else:
        debug = True
        lines = [e for e in lines_as_string.split("\n")][1:-1]

    x = int(lines[0])
    

    return (x, )


def solve(x):

    result = 'No'
    if x >= 30:
        result = 'Yes'
        
    return result
    


def main():
    
    result = solve(*parse_input())
    if isinstance(result, list):
        for r in result:
            print("%s" % r, sep='')
    else:
        print("%s" % result, sep='')

if __name__ == '__main__':

    main()

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

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

Solution (Python):



global FLAG_LOG
FLAG_LOG = False


def log(value):
    
    FLAG_LOG = False
    if FLAG_LOG:
        print(str(value))


def calculation(lines):
    
    X = int(lines[0])
    
    
    
    
    
    
    
    
    

    if X >= 30:
        result = 'Yes'
    else:
        result = 'No'

    return [result]



def get_input_lines(lines_count):
    lines = list()
    for _ in range(lines_count):
        lines.append(input())
    return lines



def get_testdata(pattern):
    if pattern == 1:
        lines_input = ['25']
        lines_export = ['No']
    if pattern == 2:
        lines_input = ['30']
        lines_export = ['Yes']
    return lines_input, lines_export



def get_mode():
    import sys
    args = sys.argv
    global FLAG_LOG
    if len(args) == 1:
        mode = 0
        FLAG_LOG = False
    else:
        mode = int(args[1])
        FLAG_LOG = True
    return mode



def main():
    import time
    started = time.time()
    mode = get_mode()
    if mode == 0:
        lines_input = get_input_lines(1)
    else:
        lines_input, lines_export = get_testdata(mode)

    lines_result = calculation(lines_input)

    for line_result in lines_result:
        print(line_result)

    
    
    
    
    
    
    
    
    
    
    



if __name__ == '__main__':
    main()

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

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

Solution (Python):

from sys import stdin

n = int(stdin.readline().rstrip())

if n > 29:
  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):
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')

main()

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

Solution (Python):

import sys

rl = sys.stdin.buffer.readline
INF = sys.maxsize

X = int(rl())

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

Solution (Python):
import itertools
import functools
import math
from collections import Counter
from itertools import combinations
import re

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

Solution (Python):

import sys
input = sys.stdin.readline

def I(): return int(input())

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

Solution (Python):

X = int(input())


flag = 1


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

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

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

Solution (Python):
a = int(input())
if(a >= 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):
import sys
sys.setrecursionlimit(1000000000)
import math
from math import gcd
def lcm(a, b): return a * b // gcd(a, b)
from itertools import count, permutations, chain, product
from functools import lru_cache
from collections import deque, defaultdict
from pprint import pprint
ii = lambda: int(input())
mis = lambda: map(int, input().split())
lmis = lambda: list(mis())
INF = float('inf')
N1097 = 10**9 + 7

def meg(f, ok, ng):
    while abs(ok-ng)>1:
        mid = (ok+ng)//2
        if f(mid):
            ok=mid
        else:
            ng=mid
    return ok

def get_inv(n, modp):
    return pow(n, modp-2, modp)

def factorials_list(n, modp):    
    fs = [1]
    for i in range(1, n+1):
        fs.append(fs[-1] * i % modp)
    return fs

def invs_list(n, fs, modp):     
    invs = [get_inv(fs[-1], modp)]
    for i in range(n, 1-1, -1):
        invs.append(invs[-1] * i % modp)
    invs.reverse()
    return invs

def comb(n, k, modp):
    num = 1
    for i in range(n, n-k, -1):
        num = num * i % modp
    den = 1
    for i in range(2, k+1):
        den = den * i % modp
    return num * get_inv(den, modp) % modp

def comb_from_list(n, k, modp, fs, invs):
    return fs[n] * invs[n-k] * invs[k] % modp



class UnionFindEx:
    def __init__(self, size):
        
        self.roots = [-1] * size
    def getRootID(self, i):
        r = self.roots[i]
        if r < 0:   
            return i
        else:
            r = self.getRootID(r)
            self.roots[i] = r
            return r
    def getGroupSize(self, i):
        return -self.roots[self.getRootID(i)]
    def connect(self, i, j):
        r1, r2 = self.getRootID(i), self.getRootID(j)
        if r1 == r2:
            return False
        if self.getGroupSize(r1) < self.getGroupSize(r2):
            r1, r2 = r2, r1
        self.roots[r1] += self.roots[r2]    
        self.roots[r2] = r1
        return True

Yes = 'Yes'
No = 'No'


from collections import deque

def main():
    print(Yes if ii()>=30 else No)


main()

Solution (Python):

X = int(input())
if 30 <= X:
  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 30 <= x else 'No')

Solution (Python):







INF = float("inf")
import sys

N = int(sys.stdin.readline())

if 30 <= N:
    print("Yes")
    exit()
print("No")

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

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

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

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

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):
import sys
sys.setrecursionlimit(10 ** 9)

def int1(x): return int(x) - 1
def II(): return int(input())
def MI(): return map(int, input().split())
def MI1(): return map(int1, input().split())
def LI(): return list(map(int, input().split()))
def LI1(): return list(map(int1, input().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def MS(): return input().split()
def LS(): return list(input())
def LLS(rows_number): return [LS() for _ in range(rows_number)]
def printlist(lst, k=' '): print(k.join(list(map(str, lst))))
INF = float('inf')







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

if __name__ == '__main__':
    solve()