Language: C++

#include <bits/stdc++.h>
using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}


Compiler output:
a.cc:2:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                     ^~~~
a.cc: In function 'int main()':
a.cc:2:119: error: no matching function for call to 'max(int, long long int)'
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                    ~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:2:119: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                    ~~~^~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:2:119: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                    ~~~^~~~~~~
a.cc:2:130: error: no matching function for call to 'max(long long int, int)'
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                               ~~~^~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:2:130: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                               ~~~^~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:2:130: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
    2 | using namespace std;main(){long long n,b ,k,res=0;cin>>n>>k;if(!k)return cout<<n*n,0;for(b = k+1;b<=n;b++)res+=n/b*max(0,b-k)+max(n%b-k+1,0);cout << res;}
      |                                                                                                                               ~~~^~~~~~~~~~~