제출 #785960

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
785960		tosivanmak	수열 (APIO14_sequence)	C++17	컴파일 에러	0 ms	0 KiB

sequence

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
struct LINE{
  ld m,c,ocpt;
  bool operator ==(const LINE &l)const{
      return m==l.m&&c==l.c&&ocpt==l.ocpt;
  }
};
deque<LINE>q[2];

pair<ld,ld> int_pt(LINE a, LINE b){
    // a.mx+a.c=b.mx+b.c
    ld x=(b.c-a.c)/(a.m-b.m);
    ld y=(a.m*x+a.c);
    return {x,y};
}
void insert(ll id, LINE a){
    while(q[id].size()>1){
        // cout<<"bruh\n";
        if(a.m==q[id].front().m){
            if(a.c<q[id].front().c){
               break;
            }
            else{
                q[id].pop_front();
            }
        }
        else{
        if(int_pt(a,q[id].front()).first>=q[id].front().ocpt){
           q[id].pop_front();
        }
        else{
            break;
        }
        }
    }
    if(q[id].size()==0){
      a.ocpt=1e18;
      q[id].push_back(a);
    }
    else{
        if(a.m!=q[id].front().m){
    a.ocpt=int_pt(a,q[id].front()).first;
    q[id].push_front(a);
        }
        else if(a.c>q[id].front().c){
            q[id].pop_front();
            if(q[id].size()==0){
                a.ocpt=1e18;
                q[id].push_front(a);
            }
            else{
                a.ocpt=int_pt(a,q[id].front()).first;
                q[id].push_front(a);
            }
        }
    }
}
LINE qry(ll id, ld val){
    ll rid=1-id;
    LINE carry={-1e18,-1e18,-1e18};
    LINE init={-1e18,-1e18,-1e18};
   while(q[rid].size()>=1&&q[rid].back().ocpt>=val){
       carry=q[rid].back();
       q[rid].pop_back();
   }
   if(carry!=init){
       q[rid].push_back(carry);
   }
   return q[rid].back();
}
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL); cout.tie(NULL);
  ll n,k;
  cin>>n>>k;
  ll arr[n+5];
  for(int i=1;i<=n;i++){
      cin>>arr[i];
  }
  ll psum[n+5];
  psum[0]=0;
  for(int i=1;i<=n;i++){
      psum[i]=psum[i-1]+arr[i];
  }
  ll dp[n+5][2];
  for(int i=1;i<=n;i++){
      dp[i][0]=0;
  }
  q[0].push_back({0,0,1e18});
  for(int j=1;j<=k;j++){
      ll id=j%2;
      
      for(int i=1;i<=n-1;i++){
          if(i>=j){
          ll dpcut=(psum[n]-psum[i])*psum[i];
        //   cout<<i<<": "<<j<<": "<<dpcut<<"\n";
          LINE store=qry(id,psum[n]-psum[i]);
          dp[i][id]=dpcut+store.c+store.m*(psum[n]-psum[i]);
         
          } 
          if(i>=j-1&&j!=1){
          LINE put={(ld)-psum[i],(ld)dp[i][(1-id)],0};
          insert((1-id),put);
        //   for(auto u: q[(1-id)]){
        //       cout<<u.m<<" "<<u.c<<" "<<u.ocpt<<"\n";
        //   }
        //   cout<<"\n";
          }
      }
      q[(1-id)].clear();
    //   cout<<j<<": ";
    //   for(int i=1;i<=n-1;i++){
    //        cout<<dp[i][id]<<" ";
    //     //    dp[i][(1-id)]=0;
    //   }
    //   cout<<"\n";
  }
  ll ck=k%2;
  int ans=0;
  for(int i=1;i<=n-1;i++){
     ans=max(ans,dp[i][ck]);
    //  cout<<dp[i][ck]<<" ";
  }
  cout<<ans<<"\n";
}
// sum max =10^9
// dp transformation= assume nothing dp cut val + dp[op][k-1] - op[psum] * (psum[n] - cut pt)
// in cart plane, coordinate of x moves to the left
// search ocpt left
// slope= -op[psum]
// x= psum[n]-psum[i]

컴파일 시 표준 에러 (stderr) 메시지

sequence.cpp: In function 'LINE qry(long long int, long double)':
sequence.cpp:69:12: error: no match for 'operator!=' (operand types are 'LINE' and 'LINE')
   69 |    if(carry!=init){
      |       ~~~~~^~~~~~
      |       |      |
      |       LINE   LINE
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1064:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator!=(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1064 |     operator!=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1064:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1144:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1144 |     operator!=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1144:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1237:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator!=(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1237 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1237:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1311:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1311 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1311:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1405:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1405 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1405:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1479:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1479 |     operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1479:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:1579:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator!=(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1579 |     operator!=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1579:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/regex.h:2126:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator!=(const std::__cxx11::match_results<_BiIter, _Alloc>&, const std::__cxx11::match_results<_BiIter, _Alloc>&)'
 2126 |     operator!=(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:2126:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::match_results<_BiIter, _Alloc>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:496:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  496 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:496:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::pair<_T1, _T2>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:372:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  372 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:372:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::reverse_iterator<_Iterator>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:410:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  410 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:410:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::reverse_iterator<_Iterator>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1444:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1444 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1444:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::move_iterator<_IteratorL>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1501:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1501 |     operator!=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1501:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::move_iterator<_IteratorL>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/postypes.h:227:5: note: candidate: 'template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)'
  227 |     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/postypes.h:227:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::fpos<_StateT>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/string:41,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/allocator.h:213:5: note: candidate: 'template<class _T1, class _T2> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_T2>&)'
  213 |     operator!=(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/10/bits/allocator.h:213:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::allocator<_CharT>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/string_view:525:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)'
  525 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:525:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/string_view:531:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)'
  531 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:531:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/string_view:538:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >, std::basic_string_view<_CharT, _Traits>)'
  538 |     operator!=(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:538:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6229:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 6229 |     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6229:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   'LINE' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6242:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 6242 |     operator!=(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6242:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:14: note:   mismatched types 'const _CharT*' and 'LINE'
   69 |    if(carry!=init){
      |              ^~~~
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from /var/local/lib/isolate/823/bo