Language: C++

#include<bits/stdc++.h>

using namespace std;

// Utility
#define rep(i,n) for(int i = 0; i < (n); ++i)

// Sorting
void insertionSort(int n,int*a,int g=1){for(int i=g;i<n;++i){int v=a[i],j=i-g;while(j>=0&&a[j]>v){a[j+g]=a[j];j-=g;}a[j+g]=v;}}
void shellSort(int n,int*a){vector<int>G;for(int h=1;;){if(h>n)break;G.push_back(h);h=3*h+1;}for(int i=G.size()-1;i>=0;--i)insertionSort(n,a,G[i]);}
int bubbleSort(int n,int*a){int s=0,j;bool f=1;for(int i=0;f;++i){f=0;for(j=n-1;j>=i+1;--j){if(a[j]<a[j-1]){swap(a[j],a[j-1]);f=1;s++;}}}return s;}
int selectionSort(int n,int*a){int s=0,j,m;for(int i=0;i<n-1;++i){m=i;for(j=i;j<n;++j)if(a[j]<a[m])m=j;swap(a[i],a[m]);if(i!=m)++s;}return s;}

// Searching
int binarySearch(int n,int*a,int k){int m,l=0,r=n;while(l<r){m=l+(r-l)/2;if(k<a[m])r=m;else if(a[m]<k)l=m+1;else return m;}return-1;}

// Mathematics
int gcd(int a,int b){!b?a:gcd(b,a%b);}
int lcm(int a,int b){return a/gcd(a,b)*b;}

// Visualization
void printArray(int n,int*a){for(int i=0;i<n;++i)printf(i>0?" %d":"%d",a[i]);printf("\n");}

int main(){
	int k,x; cin >> k >> x;
	cout << k*500>=x ? "Yes" : "No";
}

Compiler output:
a.cc: In function 'int gcd(int, int)':
a.cc:18:38: warning: no return statement in function returning non-void [-Wreturn-type]
   18 | int gcd(int a,int b){!b?a:gcd(b,a%b);}
      |                                      ^
a.cc: In function 'int main()':
a.cc:26:22: error: no match for 'operator>=' (operand types are 'std::basic_ostream<char>' and 'int')
   26 |         cout << k*500>=x ? "Yes" : "No";
      |         ~~~~~~~~~~~~~^~~
      |              |         |
      |              |         int
      |              std::basic_ostream<char>
a.cc:26:22: note: candidate: 'operator>=(int, int)' (built-in)
   26 |         cout << k*500>=x ? "Yes" : "No";
      |         ~~~~~~~~~~~~~^~~
a.cc:26:22: note:   no known conversion for argument 1 from 'std::basic_ostream<char>' to 'int'
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181,
                 from a.cc:1:
/usr/include/c++/14/bits/regex.h:1165:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1165 |     operator>=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1165:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1248:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator>=(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)'
 1248 |     operator>=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1248:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1341:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1341 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1341:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1415:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1415 |     operator>=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1415:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1509:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1509 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1509:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1586:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1586 |     operator>=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1586:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/regex.h:1686:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>=(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1686 |     operator>=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_pair.h:1070:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1070 |     operator>=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1070:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::pair<_T1, _T2>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:476:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  476 |     operator>=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:476:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/stl_iterator.h:520:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  520 |     operator>=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:520:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/stl_iterator.h:1724:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1724 |     operator>=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1724:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::move_iterator<_IteratorL>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/stl_iterator.h:1781:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1781 |     operator>=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1781:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'const std::move_iterator<_IteratorL>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/string_view:739:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>=(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  739 |     operator>=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:739:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/string_view:746:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>=(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  746 |     operator>=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:746:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   'std::basic_ostream<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/string_view:754:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>=(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  754 |     operator>=(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:754:5: note:   template argument deduction/substitution failed:
a.cc:26:24: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   26 |         cout << k*500>=x ? "Yes" : "No";
      |                        ^
/usr/include/c++/14/bits/basic_string.h:3997:5: note: candidate: 't