Owl Get a Life

Compile Error

ranges.cpp: In function ‘int32_t main()’:
ranges.cpp:91:18: error: no matching function for call to ‘std::vector<long long int>::assign(long long int)’
91 | mxx.assign(2*n+1);
| ^
In file included from /usr/include/c++/9/vector:67,
from ranges.cpp:6:
/usr/include/c++/9/bits/stl_vector.h:746:7: note: candidate: ‘void std::vector<_Tp, _Alloc>::assign(std::vector<_Tp, _Alloc>::size_type, const value_type&) [with _Tp = long long int; _Alloc = std::allocator<long long int>; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::value_type = long long int]’
746 | assign(size_type __n, const value_type& __val)
| ^~~~~~
/usr/include/c++/9/bits/stl_vector.h:746:7: note: candidate expects 2 arguments, 1 provided
/usr/include/c++/9/bits/stl_vector.h:765:2: note: candidate: ‘template<class _InputIterator, class> void std::vector<_T