Eroare de compilare: main.cpp: In function 'int main()': main.cpp:22:31: error: no matching function for call to 'std::vector<char>::push_back()' st.pb(); ^ In file included from /usr/include/c++/6/vector:64:0, from /usr/include/c++/6/queue:61, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:86, from main.cpp:1: /usr/include/c++/6/bits/stl_vector.h:914:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::value_type = char] push_back(const value_type& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:914:7: note: candidate expects 1 argument, 0 provided /usr/include/c++/6/bits/stl_vector.h:932:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = char; _Alloc = std::allocator<char>; std::vector<_Tp, _Alloc>::value_type = char] push_back(value_type&& __x) ^~~~~~~~~ /usr/include/c++/6/bits/stl_vector.h:932:7: note: candidate expects 1 argument, 0 provided main.cpp:20:19: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(s[i]==')') ^ Non zero exit status: 1