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 in C++ (GCC 9.2.1) (judge verdict: Accepted)

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                       *
 *          Fortis Fortuna Adiuvat                                       * 
 *                          "Fortune Favours the bold"                   *
 *                                                                       *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <bits/stdc++.h>
using namespace std;
#define int long long int
#define vll vector<int>
#define pb push_back
#define pll pair<int, int>
#define w(t) int t; cin >> t; while(t--)
#define print(x,y) cout << x << " " << y << endl
#define deb(x) cout << #x << " = " << x << endl
#define deb2(x, y) cout << #x << " = " << x << ", " << #y << " = " << y << endl
#define setbits(x) __builtin_popcountll(x)
#define endl "\n"

template <typename T>
void write(vector<T> &a) {        
    for(auto it = a.begin(); it != a.end(); it++)
        cout << *it << " ";
    cout << endl;}
void random(int nMin, int nMax, int n){
    srand(time(0));
    for(int i = 0; i < n; i++){
        double var = nMin + (int)((double)rand() / ((double)RAND_MAX+1) * (nMax-nMin+1));cout << var << " ";}cout << endl;
}
///////////Helper Functions///////////


////////////Main Method///////////////
int32_t main()
{
//////////////////////////////////////////////////////////
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    cout << setprecision(15);
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    #endif
//////////////////// Code Here ///////////////////////////    
{
    int n;cin >> n;
    if(n >= 30)
        cout << "Yes" << endl;
    else
        cout << "No" << endl;
}    
return 0 ;
}