Language: Java

/*
मनस्वी म्रियते कामं कार्पण्यं न तु गच्छति ।
अपि निर्वाणमायाति नानलो याति शीतताम् ॥
*/

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp> 
// #include <ext/pb_ds/tree_policy.hpp> 
// using namespace __gnu_pbds;
using namespace std;

#define mod 1000000007
#define pb push_back
#define ll long long int
#define ull unsigned ll
#define ld long double
#define vi vector<int>
#define vl vector<ll>
#define v2i vector<vector<int>>
#define v2l vector<vector<ll>>
#define ppi pair<int,int>
#define ppl pair<ll,ll>
#define vpi vector<ppi>
#define vpl vector<ppl>
#define all(x) x.begin(),x.end()
#define ff first    
#define ss second
#define forn(i,a,b) for(int i=a;i<b;i++)
#define forr(i,a,b) for(int i=a;i>=b;i--)
#define forv(i,m) for(auto i : m)
#define p2d(v) for(auto a:v){for(auto b:a)cout<<b<<" ";cout<<endl;}
#define p1d(v) for(auto a:v)cout<<a<<" ";cout<<endl;
#define ppd(v) for(auto a:v)cout<<a.ff<<" "<<a.ss<<endl;
#define imx INT_MAX
#define imn INT_MIN
#define inf 9000000000000000000
#define minf -inf
#define endl "\n"
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);
#define sze size()
#define rvs reverse 
#define itr iterator 
#define pre cout<<fixed<<setprecision(10);
#define umap unordered_map
#define uset unordered_set
#define pi 3.141592653589793
#define MAXN 100005
#define test1(x) cout << #x " = " << x << endl;
#define test2(x,y) cout << #x " = " << x << " " << #y " = " << y << endl;
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
#define oset tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>

/*
const ll infinity = 9e18;

bool compare(ll a,ll b) {return a > b;}
bool compare1(ppl a,ppl b) {return a.ff > b.ff;}
bool compare2(ppl a,ppl b) {return a.ss < b.ss;}
bool isprime(ll n){if(n < 2) return 0; ll i = 2; while(i*i <= n){if(n%i == 0) return 0; i++;} return 1;}

ll Npower(ll a,ll b) {ll product = 1; while(b){if(b&1){product = product*a;}a = a*a;b = b>>1;} return product;}
ll power(ll a,ll b,ll md = mod) {ll product = 1; while(b){if(b&1){product = (product*a)%md;}a = (a*a)%md;b = b>>1;} return product%md;}
ll GCD(ll a,ll b) {return b==0 ? a:GCD(b,a%b);}
ll LCM(ll a,ll b) {return (a/GCD(a,b))*b; }
*/




int main()
{
    fast

/*
    #ifndef ONLINE_JUDGE
        freopen("input.txt",  "r",  stdin);
        freopen("output.txt", "w", stdout);
    #endif
//*/

        
    ll n;
    cin>>n;

    if(n >= 30) cout<<"Yes";
    else cout<<"No";
        
        












    return 0;
}

Compiler output:
Main.java:6: error: illegal character: '#'
#include <bits/stdc++.h>
^
Main.java:6: error: class, interface, enum, or record expected
#include <bits/stdc++.h>
         ^
Main.java:12: error: illegal character: '#'
#define mod 1000000007
^
Main.java:12: error: class, interface, enum, or record expected
#define mod 1000000007
        ^
Main.java:13: error: illegal character: '#'
#define pb push_back
^
Main.java:14: error: illegal character: '#'
#define ll long long int
^
Main.java:15: error: illegal character: '#'
#define ull unsigned ll
^
Main.java:16: error: illegal character: '#'
#define ld long double
^
Main.java:17: error: illegal character: '#'
#define vi vector<int>
^
Main.java:18: error: illegal character: '#'
#define vl vector<ll>
^
Main.java:19: error: illegal character: '#'
#define v2i vector<vector<int>>
^
Main.java:20: error: illegal character: '#'
#define v2l vector<vector<ll>>
^
Main.java:21: error: illegal character: '#'
#define ppi pair<int,int>
^
Main.java:22: error: illegal character: '#'
#define ppl pair<ll,ll>
^
Main.java:23: error: illegal character: '#'
#define vpi vector<ppi>
^
Main.java:24: error: illegal character: '#'
#define vpl vector<ppl>
^
Main.java:25: error: illegal character: '#'
#define all(x) x.begin(),x.end()
^
Main.java:26: error: illegal character: '#'
#define ff first    
^
Main.java:27: error: illegal character: '#'
#define ss second
^
Main.java:28: error: illegal character: '#'
#define forn(i,a,b) for(int i=a;i<b;i++)
^
Main.java:28: error: class, interface, enum, or record expected
#define forn(i,a,b) for(int i=a;i<b;i++)
                                ^
Main.java:28: error: class, interface, enum, or record expected
#define forn(i,a,b) for(int i=a;i<b;i++)
                                    ^
Main.java:29: error: illegal character: '#'
#define forr(i,a,b) for(int i=a;i>=b;i--)
^
Main.java:29: error: class, interface, enum, or record expected
#define forr(i,a,b) for(int i=a;i>=b;i--)
                                ^
Main.java:29: error: class, interface, enum, or record expected
#define forr(i,a,b) for(int i=a;i>=b;i--)
                                     ^
Main.java:30: error: illegal character: '#'
#define forv(i,m) for(auto i : m)
^
Main.java:31: error: illegal character: '#'
#define p2d(v) for(auto a:v){for(auto b:a)cout<<b<<" ";cout<<endl;}
^
Main.java:31: error: class, interface, enum, or record expected
#define p2d(v) for(auto a:v){for(auto b:a)cout<<b<<" ";cout<<endl;}
                                                       ^
Main.java:31: error: class, interface, enum, or record expected
#define p2d(v) for(auto a:v){for(auto b:a)cout<<b<<" ";cout<<endl;}
                                                                  ^
Main.java:32: error: illegal character: '#'
#define p1d(v) for(auto a:v)cout<<a<<" ";cout<<endl;
^
Main.java:32: error: class, interface, enum, or record expected
#define p1d(v) for(auto a:v)cout<<a<<" ";cout<<endl;
                                         ^
Main.java:33: error: illegal character: '#'
#define ppd(v) for(auto a:v)cout<<a.ff<<" "<<a.ss<<endl;
^
Main.java:33: error: class, interface, enum, or record expected
#define ppd(v) for(auto a:v)cout<<a.ff<<" "<<a.ss<<endl;
        ^
Main.java:34: error: illegal character: '#'
#define imx INT_MAX
^
Main.java:35: error: illegal character: '#'
#define imn INT_MIN
^
Main.java:36: error: illegal character: '#'
#define inf 9000000000000000000
^
Main.java:37: error: illegal character: '#'
#define minf -inf
^
Main.java:38: error: illegal character: '#'
#define endl "\n"
^
Main.java:39: error: illegal character: '#'
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);
^
Main.java:39: error: class, interface, enum, or record expected
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);
                                              ^
Main.java:40: error: illegal character: '#'
#define sze size()
^
Main.java:41: error: illegal character: '#'
#define rvs reverse 
^
Main.java:42: error: illegal character: '#'
#define itr iterator 
^
Main.java:43: error: illegal character: '#'
#define pre cout<<fixed<<setprecision(10);
^
Main.java:44: error: illegal character: '#'
#define umap unordered_map
^
Main.java:40: error: unnamed classes are a preview feature and are disabled by default.
#define sze size()
        ^
  (use --enable-preview to enable unnamed classes)
Main.java:45: error: illegal character: '#'
#define uset unordered_set
^
Main.java:46: error: illegal character: '#'
#define pi 3.141592653589793
^
Main.java:47: error: illegal character: '#'
#define MAXN 100005
^
Main.java:48: error: illegal character: '#'
#define test1(x) cout << #x " = " << x << endl;
^
Main.java:48: error: illegal character: '#'
#define test1(x) cout << #x " = " << x << endl;
                         ^
Main.java:49: error: illegal character: '#'
#define test2(x,y) cout << #x " = " << x << " " << #y " = " << y << endl;
^
Main.java:49: error: class, interface, enum, or record expected
#define test2(x,y) cout << #x " = " << x << " " << #y " = " << y << endl;
        ^
Main.java:49: error: illegal character: '#'
#define test2(x,y) cout << #x " = " << x << " " << #y " = " << y << endl;
                           ^
Main.java:49: error: illegal character: '#'
#define test2(x,y) cout << #x " = " << x << " " << #y " = " << y << endl;
                                                   ^
Main.java:50: error: illegal character: '#'
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
^
Main.java:50: error: class, interface, enum, or record expected
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
        ^
Main.java:50: error: illegal character: '#'
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                             ^
Main.java:50: error: illegal character: '#'
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                                                     ^
Main.java:50: error: illegal character: '#'
#define test3(x,y,z) cout << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                                                                             ^
Main.java:51: error: illegal character: '#'
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
^
Main.java:51: error: class, interface, enum, or record expected
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
        ^
Main.java:51: error: illegal character: '#'
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                               ^
Main.java:51: error: illegal character: '#'
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                                                       ^
Main.java:51: error: illegal character: '#'
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                                                                               ^
Main.java:51: error: illegal character: '#'
#define test4(w,x,y,z) cout << #w " = " << w << " " << #x " = " << x << " " << #y " = " << y << " " << #z " = " << z << endl;
                                                                                                       ^
Main.java:52: error: illegal character: '#'
#define oset tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>
^
Main.java:52: error: class, interface, enum, or record expected
#define oset tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>
        ^
Main.java:84: error: class, interface, enum, or record expected
    cin>>n;
    ^
Main.java:86: error: class, interface, enum, or record expected
    if(n >= 30) cout<<"Yes";
    ^
Main.java:87: error: class, interface, enum, or record expected
    else cout<<"No";
    ^
Main.java:102: error: class, interface, enum, or record expected
    return 0;
    ^
Main.java:103: error: class, interface, enum, or record expected
}
^
73 errors