Compilare: main.cpp: In function 'void Add_Word_To_Tree(int, int, std::string, std::vector<std::vector<int> >&, std::vector<std::vector<char> >&, std::vector<thing>&)': main.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (int i = 0; i < Vec[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DeleteWord(int, int, std::string, std::vector<std::vector<int> >&, std::vector<std::vector<char> >&, std::vector<thing>&)': main.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 0; i < Vec[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Appearances(int, int, std::string, std::vector<std::vector<int> >&, std::vector<std::vector<char> >&, std::vector<thing>&)': main.cpp:73:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < Vec[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void PrefixAppear(int, int, std::string, std::vector<std::vector<int> >&, std::vector<std::vector<char> >&, std::vector<thing>&)': main.cpp:96:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 0; i < Vec[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~