/in/foo.cc: In function 'void getprimes_2()':
/in/foo.cc:13:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |                 for (int j=0;j<primes.size()&&primes[j]*i<=N;j++)
      |                              ~^~~~~~~~~~~~~~
/in/foo.cc:16:57: error: 'primesp' was not declared in this scope; did you mean 'primes'?
   16 |                         k[i]=max({primes[j],primes[j]*i,primesp[i]});
      |                                                         ^~~~~~~
      |                                                         primes
/in/foo.cc:16:33: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
   16 |                         k[i]=max({primes[j],primes[j]*i,primesp[i]});
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/12/string:50,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/istream:38,
                 from /usr/include/c++/12/sstream:38,
                 from /usr/include/c++/12/complex:45,
                 from /usr/include/c++/12/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:54,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/12/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
/in/foo.cc:16:33: note:   candidate expects 2 arguments, 1 provided
   16 |                         k[i]=max({primes[j],primes[j]*i,primesp[i]});
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/12/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
/in/foo.cc:16:33: note:   candidate expects 3 arguments, 1 provided
   16 |                         k[i]=max({primes[j],primes[j]*i,primesp[i]});
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/12/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:65:
/usr/include/c++/12/bits/stl_algo.h:5746:5: note: candidate: 'template<class _Tp> _Tp std::max(initializer_list<_Tp>)'
 5746 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/12/bits/stl_algo.h:5746:5: note:   template argument deduction/substitution failed:
/usr/include/c++/12/bits/stl_algo.h:5756:5: note: candidate: 'template<class _Tp, class _Compare> _Tp std::max(initializer_list<_Tp>, _Compare)'
 5756 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/12/bits/stl_algo.h:5756:5: note:   template argument deduction/substitution failed: