Borderou de evaluare (job #676786)

Compilare: main.cpp: In function 'bool is_valid_tree(tree_node*)': main.cpp:49:31: warning: comparison of integer expressions of different signedness: 'std::vector<tree_node*>::size_type' {aka 'unsigned int'} and 'std::map<char, int>::mapped_type' {aka 'int'} [-Wsign-compare] 49 | if (node->children.size() != type_dim[node->type]) { main.cpp: In function 'int main()': main.cpp:98:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 98 | for (int i = 1; i < tree_str.size(); i++) { | ~~^~~~~~~~~~~~~~~~~