relativnost.cpp: In function 'void update(long long int, long long int, long long int)':
relativnost.cpp:35:46: error: no match for 'operator=' (operand types are 'std::vector<long long int>' and 'void')
35 | tree[x]=merg(&tree[2*x], &tree[2*x+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 relativnost.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 = long long int; _Alloc = std::allocator<long long int>]'
210 | vector<_Tp, _Alloc>::
| ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/vector.tcc:211:42: note: no known conversion for argument 1 from 'void' to 'const std::vector<long long 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 = long long int; _Alloc = std::allocator<long long 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 'void' to 'std::vector<long long 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 = long long int; _Alloc = std::allocator<long long 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 'void' to 'std::initializer_list<long long int>'
788 | operator=(initializer_list<value_type> __l)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
relativnost.cpp: At global scope:
relativnost.cpp:38:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
38 | main()
| ^~~~