Submission #1296879

#TimeUsernameProblemLanguageResultExecution timeMemory
1296879nataliaaWorld Map (IOI25_worldmap)C++20
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; vector<int> ans; vector<int> v[N+1]; rec(int u, int w) { ans.push_back(w); for(int i = 0; i < v[w].size(); i++) { if(v[w][i]!=u){ rec(w, v[w[i]]); ans.push_back(v[w[i]]); } } } vector<vector<int>> create_map(int N, int M, vector<int> A, vector<int> B){ for(int i = 0; i < M; i++) { v[A[i]].push_back(B[i]); v[B[i]].push_back(A[i]); } ans = rec(0, 1); vector<vector<int>> ans1; for(int i = 0; i < ans.size(); i++) { ans1[i] = ans; } return ans1; }

Compilation message (stderr)

worldmap.cpp:4:15: error: 'N' was not declared in this scope
    4 | vector<int> v[N+1];
      |               ^
worldmap.cpp:5:1: error: ISO C++ forbids declaration of 'rec' with no type [-fpermissive]
    5 | rec(int u, int w) {
      | ^~~
worldmap.cpp: In function 'int rec(int, int)':
worldmap.cpp:7:24: error: 'v' was not declared in this scope
    7 |     for(int i = 0; i < v[w].size(); i++) {
      |                        ^
worldmap.cpp:9:23: error: invalid types 'int[int]' for array subscript
    9 |             rec(w, v[w[i]]);
      |                       ^
worldmap.cpp:10:30: error: invalid types 'int[int]' for array subscript
   10 |             ans.push_back(v[w[i]]);
      |                              ^
worldmap.cpp:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
   13 | }
      | ^
worldmap.cpp: In function 'std::vector<std::vector<int> > create_map(int, int, std::vector<int>, std::vector<int>)':
worldmap.cpp:17:9: error: 'v' was not declared in this scope
   17 |         v[A[i]].push_back(B[i]);
      |         ^
worldmap.cpp:20:20: error: no match for 'operator=' (operand types are 'std::vector<int>' and 'int')
   20 |      ans = rec(0, 1);
      |                    ^
In file included from /usr/include/c++/13/vector:72,
                 from /usr/include/c++/13/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:53,
                 from worldmap.cpp:1:
/usr/include/c++/13/bits/vector.tcc:210:5: note: candidate: 'constexpr std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const std::vector<_Tp, _Alloc>&) [with _Tp = int; _Alloc = std::allocator<int>]'
  210 |     vector<_Tp, _Alloc>::
      |     ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/vector.tcc:211:42: note:   no known conversion for argument 1 from 'int' to 'const std::vector<int>&'
  211 |     operator=(const vector<_Tp, _Alloc>& __x)
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from /usr/include/c++/13/vector:66:
/usr/include/c++/13/bits/stl_vector.h:766:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::vector<_Tp, _Alloc>&&) [with _Tp = int; _Alloc = std::allocator<int>]'
  766 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |       ^~~~~~~~
/usr/include/c++/13/bits/stl_vector.h:766:26: note:   no known conversion for argument 1 from 'int' to 'std::vector<int>&&'
  766 |       operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move())
      |                 ~~~~~~~~~^~~
/usr/include/c++/13/bits/stl_vector.h:788:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::initializer_list<_Tp>) [with _Tp = int; _Alloc = std::allocator<int>]'
  788 |       operator=(initializer_list<value_type> __l)
      |       ^~~~~~~~
/usr/include/c++/13/bits/stl_vector.h:788:46: note:   no known conversion for argument 1 from 'int' to 'std::initializer_list<int>'
  788 |       operator=(initializer_list<value_type> __l)
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~