Compilare: main.cpp: In function 'int main()': main.cpp:77:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i = 1; i < only_node.size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:88:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for(int i = 0; i < only_node.size(); i++) | ~~^~~~~~~~~~~~~~~~~~