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)

//Romene                           
                             

                                #include<bits/stdc++.h>
                                
                                #include<string>
                                
                                #include <sstream>
                                using namespace std;
             
                                #define ll long long
                                #define ld long double
                                #define pb push_back
                                #define pf push_front
                                #define f first
                                #define s second
                                #define all(c)  c.begin(), c.end()
                                #define ulli unsigned long long int
                                #define lli long long int
                                #define llv vector< ll >
                                #define llc vector< char >
                                #define lls vector< string >
                                #define llb vector< bool >
                                #define mp make_pair
                                #define endl "\n"
                                #define debg cout<<"HI"<<endl;
                                #define ins insert
                                #define foo(i,n) for(ll i = 0;i<n;i++)
                                #define foa(i,a) for(ll i = 0;i<a.size();i++)
                                #define foe(i,a,b) for(ll i = a;i<=b;i++)
                                #define max3(a,b,c) max(max(a,b),c)
                                #define min3(a,b,c) min(min(a,b),c)
                                #define INF 2147483647
                                #define len length
                                #define sp setprecision(16)
                                #define mod 1000000007
                                
                                 
                                ll powr(ll b,ll m){  
                                  ll ans=1;
                                  while(m>0){
                                  if(m%2==1){
                                  ans=(ans*b)%mod;
                                  }
                                  b=(b*b)%mod;
                                  m=m/2;
                                   
                                      
                                  }
                                  return ans;
                                }
                                 ll gcd1(ll a,ll b){
                                  if(a==0)
                                    return b;
                                  else{
                                    return gcd1( b%a, a);
                                  }
                                 }
                                 ll lcm(ll a, ll b)  
                              {  
                                 return (a*b)/gcd1(a, b);  
                              }  
                                 ll mod1(ll a){
                                  if(a<0)
                                    return -1*a;
                                  else{
                                    return a;
                                  }
                                 }
                              
                                 bool isPrime(int num){
                               
                                for(int i = 2; i*i <= (num); i++) {
                                   if(num % i == 0) {
                                      return false;
                                      break;
                                   }
                                }
                               

                                return true;
                            }
                         
                         
                           
                         
                           
                                      
                                int main(){
                                  /* #ifndef ONLINE_JUDGE
                                    freopen("input.txt", "r", stdin);
                                    freopen("output.txt", "w", stdout);
                                    #endif*/
                                    ios::sync_with_stdio(0);
                                    cin.tie(0); cout.tie(0);
                                
                                 
                                     int f1;
                                 f1=1;
                                 
                                
                                                           
                                    
                                 for(int y2=0;y2<f1;y2++){
                               ll n;
                                   cin >> n;
                               if(n>=30)cout << "Yes";
                               else cout << "No";
                               }


           




                                           
                                    cerr << "Time : " << 1000 * ((double)clock()) / (double)CLOCKS_PER_SEC << "ms\n";
                                
                              
                                
                                                                                       
                                                   
                                 }