Main.cc: In function 'int main()':
Main.cc:25:25: error: no matching function for call to 'std::vector<std::pair<char, std::vector<int> > >::emplace_back(<brace-enclosed initializer list>)'
   25 |         vec.emplace_back({s,{a,b,c}});
      |         ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
In file included from /usr/include/c++/12.2.1/vector:70,
                 from /usr/include/c++/12.2.1/queue:61,
                 from /usr/include/c++/12.2.1/x86_64-alpine-linux-musl/bits/stdc++.h:86,
                 from Main.cc:1:
/usr/include/c++/12.2.1/bits/vector.tcc:111:7: note: candidate: 'void std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {}; _Tp = std::pair<char, std::vector<int> >; _Alloc = std::allocator<std::pair<char, std::vector<int> > >]'
  111 |       vector<_Tp, _Alloc>::
      |       ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/12.2.1/bits/vector.tcc:111:7: note:   candidate expects 0 arguments, 1 provided