Eroare de compilare: main.cpp:43:5: error: reference to 'unordered_map' is ambiguous unordered_map children; ^~~~~~~~~~~~~ main.cpp:10:7: note: candidates are: class unordered_map class unordered_map ^~~~~~~~~~~~~ In file included from /usr/include/c++/6/unordered_map:48:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:117, from main.cpp:1: /usr/include/c++/6/bits/unordered_map.h:98:11: note: template<class _Key, class _Tp, class _Hash, class _Pred, class _Alloc> class std::unordered_map class unordered_map ^~~~~~~~~~~~~ main.cpp: In member function 'void TrieNode::insert(std::__cxx11::string, int)': main.cpp:49:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == s.size()) ~~~~~~^~~~~~~~~~~ main.cpp:55:14: error: 'children' was not declared in this scope if (!children.find(s[index])) ^~~~~~~~ main.cpp:58:9: error: 'children' was not declared in this scope children[s[index]]->insert(s, index + 1); ^~~~~~~~ main.cpp: In member function 'bool TrieNode::remove(std::__cxx11::string, int)': main.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == s.size()) ~~~~~~^~~~~~~~~~~ main.cpp:66:32: error: 'children' was not declared in this scope return cnt <= 0 && children.empty(); ^~~~~~~~ main.cpp:69:13: error: 'children' was not declared in this scope if (children.find(s[index])) ^~~~~~~~ main.cpp: In member function 'int TrieNode::count(std::__cxx11::string, int)': main.cpp:81:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == s.size()) ~~~~~~^~~~~~~~~~~ main.cpp:84:13: error: 'children' was not declared in this scope if (children.find(s[index])) ^~~~~~~~ main.cpp: In member function 'int TrieNode::prefix(std::__cxx11::string, int)': main.cpp:92:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == s.size()) ~~~~~~^~~~~~~~~~~ main.cpp:95:13: error: 'children' was not declared in this scope if (children.find(s[index])) ^~~~~~~~ Non zero exit status: 1