Eroare de compilare: main.cpp: In function 'int main()': main.cpp:30:22: error: no matching function for call to 'std::vector<int>::insert(int&)' 30 | gr[n1].insert(n2); | ~~~~~~~~~~~~~^~~~ In file included from /usr/include/c++/12.2.1/vector:64, from /usr/include/c++/12.2.1/functional:62, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:71, from main.cpp:1: /usr/include/c++/12.2.1/bits/stl_vector.h:1477:9: note: candidate: 'template<class _InputIterator, class> constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, _InputIterator, _InputIterator) [with <template-parameter-2-2> = _InputIterator; _Tp = int; _Alloc = std::allocator<int>]' 1477 | insert(const_iterator __position, _InputIterator __first, | ^~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1477:9: note: template argument deduction/substitution failed: main.cpp:30:22: note: candidate expects 3 arguments, 1 provided 30 | gr[n1].insert(n2); | ~~~~~~~~~~~~~^~~~ In file included from /usr/include/c++/12.2.1/vector:70: /usr/include/c++/12.2.1/bits/vector.tcc:133:5: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator; value_type = int]' 133 | vector<_Tp, _Alloc>:: | ^~~~~~~~~~~~~~~~~~~ /usr/include/c++/12.2.1/bits/vector.tcc:133:5: note: candidate expects 2 arguments, 1 provided /usr/include/c++/12.2.1/bits/stl_vector.h:1388:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator; value_type = int]' 1388 | insert(const_iterator __position, value_type&& __x) | ^~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1388:7: note: candidate expects 2 arguments, 1 provided /usr/include/c++/12.2.1/bits/stl_vector.h:1406:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, std::initializer_list<_Tp>) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator]' 1406 | insert(const_iterator __position, initializer_list<value_type> __l) | ^~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1406:7: note: candidate expects 2 arguments, 1 provided /usr/include/c++/12.2.1/bits/stl_vector.h:1432:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, size_type, const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator; size_type = long unsigned int; value_type = int]' 1432 | insert(const_iterator __position, size_type __n, const value_type& __x) | ^~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1432:7: note: candidate expects 3 arguments, 1 provided Non zero exit status: 1