Eroare de compilare: main.cpp: In function 'int main()': main.cpp:44:26: error: no matching function for call to 'std::vector<int>::insert(int&)' 44 | c[a].insert(b); | ^ In file included from /usr/include/c++/10/vector:72, from /usr/include/c++/10/queue:61, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86, from main.cpp:1: /usr/include/c++/10/bits/vector.tcc:130:5: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(std::vector<_Tp, _Alloc>::const_iterator, const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator; std::vector<_Tp, _Alloc>::value_type = int]' 130 | vector<_Tp, _Alloc>:: | ^~~~~~~~~~~~~~~~~~~ /usr/include/c++/10/bits/vector.tcc:130:5: note: candidate expects 2 arguments, 1 provided In file included from /usr/include/c++/10/vector:67, from /usr/include/c++/10/queue:61, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86, from main.cpp:1: /usr/include/c++/10/bits/stl_vector.h:1293:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(std::vector<_Tp, _Alloc>::const_iterator, std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator; std::vector<_Tp, _Alloc>::value_type = int]' 1293 | insert(const_iterator __position, value_type&& __x) | ^~~~~~ /usr/include/c++/10/bits/stl_vector.h:1293:7: note: candidate expects 2 arguments, 1 provided /usr/include/c++/10/bits/stl_vector.h:1310:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(std::vector<_Tp, _Alloc>::const_iterator, std::initializer_list<_Tp>) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator]' 1310 | insert(const_iterator __position, initializer_list<value_type> __l) | ^~~~~~ /usr/include/c++/10/bits/stl_vector.h:1310:7: note: candidate expects 2 arguments, 1 provided /usr/include/c++/10/bits/stl_vector.h:1335:7: note: candidate: 'std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(std::vector<_Tp, _Alloc>::const_iterator, std::vector<_Tp, _Alloc>::size_type, const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::iterator = std::vector<int>::iterator; std::vector<_Tp, _Alloc>::const_iterator = std::vector<int>::const_iterator; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::value_type = int]' 1335 | insert(const_iterator __position, size_type __n, const value_type& __x) | ^~~~~~ /usr/include/c++/10/bits/stl_vector.h:1335:7: note: candidate expects 3 arguments, 1 provided /usr/include/c++/10/bits/stl_vector.h:1379:2: note: candidate: 'template<class _InputIterator, class> std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(std::vector<_Tp, _Alloc>::const_iterator, _InputIterator, _InputIterator) [with _InputIterator = _InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _Tp = int; _Alloc = std::allocator<int>]' 1379 | insert(const_iterator __position, _InputIterator __first, | ^~~~~~ /usr/include/c++/10/bits/stl_vector.h:1379:2: note: template argument deduction/substitution failed: main.cpp:44:26: note: candidate expects 3 arguments, 1 provided 44 | c[a].insert(b); | ^ Non zero exit status: 1