Language: C++

#include "bits/stdc++.h"
using namespace std;
int main()
{
    long long n, k, total = 0;
    scanf("%lld %lld", &n, &k);
    for (long long i = k + 1; i <= n; ++i)
    {
        if (k)
        {
            total += n / i * (i - k) + max(0, n % i - k + 1);
        }
        else
        {
            total += n / i * (i - k) + max(0, n % i - k);
        }
    }
    printf("%lld\n", total);
}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:43: error: no matching function for call to 'max(int, long long int)'
   11 |             total += n / i * (i - k) + max(0, n % i - k + 1);
      |                                        ~~~^~~~~~~~~~~~~~~~~~
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:11:43: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   11 |             total += n / i * (i - k) + max(0, n % i - k + 1);
      |                                        ~~~^~~~~~~~~~~~~~~~~~
/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:11:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   11 |             total += n / i * (i - k) + max(0, n % i - k + 1);
      |                                        ~~~^~~~~~~~~~~~~~~~~~
a.cc:15:43: error: no matching function for call to 'max(int, long long int)'
   15 |             total += n / i * (i - k) + max(0, n % i - k);
      |                                        ~~~^~~~~~~~~~~~~~
/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:15:43: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   15 |             total += n / i * (i - k) + max(0, n % i - k);
      |                                        ~~~^~~~~~~~~~~~~~
/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:15:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   15 |             total += n / i * (i - k) + max(0, n % i - k);
      |                                        ~~~^~~~~~~~~~~~~~