Submission #676988

#TimeUsernameProblemLanguageResultExecution timeMemory
676988DulguunDetecting Molecules (IOI16_molecules)C++11
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; auto find_subset(int l, int u, int[] w){ int n = sizeof(w)/sizeof(w[0]); vector<pair<int,int>> v(n); for(int i=0; i<n; i++) v[i]={w[i], i}; sort(v.begin(), v.end()); for(int k=n; k>0; k++){ int s=0; for(int i=0; i<k; i++) s+=v[i]; do{ if(s>=l && s<=u) { int sol[k]; for(int j=0; j<k; j++) sol[j]=v[j].second; return sol; }s=s+v[i]-v[i-k]; } while(int i=k; i<n; i++) } }

Compilation message (stderr)

molecules.cpp:4:38: error: expected ',' or '...' before 'w'
    4 | auto find_subset(int l, int u, int[] w){
      |                                      ^
molecules.cpp:4:1: error: 'find_subset' function uses 'auto' type specifier without trailing return type
    4 | auto find_subset(int l, int u, int[] w){
      | ^~~~
molecules.cpp:4:1: note: deduced return type only available with '-std=c++14' or '-std=gnu++14'
molecules.cpp: In function 'auto find_subset(int, int, int*)':
molecules.cpp:5:17: error: 'w' was not declared in this scope
    5 |  int n = sizeof(w)/sizeof(w[0]);
      |                 ^
molecules.cpp:7:38: error: no match for 'operator=' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'} and '<brace-enclosed initializer list>')
    7 |  for(int i=0; i<n; i++) v[i]={w[i], i};
      |                                      ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 molecules.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:390:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type = const std::pair<int, int>&]'
  390 |       operator=(typename conditional<
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:393:41: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::conditional<true, const std::pair<int, int>&, const std::__nonesuch&>::type' {aka 'const std::pair<int, int>&'}
  390 |       operator=(typename conditional<
      |                 ~~~~~~~~~~~~~~~~~~~~~    
  391 |   __and_<is_copy_assignable<_T1>,
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~        
  392 |          is_copy_assignable<_T2>>::value,
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  393 |   const pair&, const __nonesuch&>::type __p)
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:401:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type = std::pair<int, int>&&]'
  401 |       operator=(typename conditional<
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:404:31: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::conditional<true, std::pair<int, int>&&, std::__nonesuch&&>::type' {aka 'std::pair<int, int>&&'}
  401 |       operator=(typename conditional<
      |                 ~~~~~~~~~~~~~~~~~~~~~
  402 |   __and_<is_move_assignable<_T1>,
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  403 |          is_move_assignable<_T2>>::value,
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  404 |   pair&&, __nonesuch&&>::type __p)
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, const _U1&>, std::is_assignable<_T2&, const _U2&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(const std::pair<_U1, _U2>&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
  418 |  operator=(const pair<_U1, _U2>& __p)
      |  ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note:   template argument deduction/substitution failed:
molecules.cpp:7:38: note:   couldn't deduce template parameter '_U1'
    7 |  for(int i=0; i<n; i++) v[i]={w[i], i};
      |                                      ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 molecules.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:430:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, _U1&&>, std::is_assignable<_T2&, _U2&&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
  430 |  operator=(pair<_U1, _U2>&& __p)
      |  ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:430:2: note:   template argument deduction/substitution failed:
molecules.cpp:7:38: note:   couldn't deduce template parameter '_U1'
    7 |  for(int i=0; i<n; i++) v[i]={w[i], i};
      |                                      ^
molecules.cpp:12:27: error: no match for 'operator+=' (operand types are 'int' and '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'std::pair<int, int>'})
   12 |   for(int i=0; i<k; i++) s+=v[i];
molecules.cpp:17:12: warning: address of local variable 'sol' returned [-Wreturn-local-addr]
   17 |     return sol;
      |            ^~~
molecules.cpp:15:9: note: declared here
   15 |     int sol[k];
      |         ^~~
molecules.cpp:18:11: error: 'i' was not declared in this scope
   18 |    }s=s+v[i]-v[i-k];
      |           ^
molecules.cpp:20:9: error: expected primary-expression before 'int'
   20 |   while(int i=k; i<n; i++)
      |         ^~~
molecules.cpp:20:9: error: expected ')' before 'int'
   20 |   while(int i=k; i<n; i++)
      |        ~^~~
      |         )
molecules.cpp:20:9: error: expected ';' before 'int'
   20 |   while(int i=k; i<n; i++)
      |         ^~~
      |         ;
molecules.cpp:20:19: warning: statement has no effect [-Wunused-value]
   20 |   while(int i=k; i<n; i++)
      |                  ~^~
molecules.cpp:20:26: error: expected ';' before ')' token
   20 |   while(int i=k; i<n; i++)
      |                          ^
      |                          ;
molecules.cpp:6:27: warning: control reaches end of non-void function [-Wreturn-type]
    6 |  vector<pair<int,int>> v(n);
      |                           ^