Compilare: main.cpp: In function 'void removeLeaves()': main.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i = 1; i < adjList.size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int i = 1; i < adjList.size(); i++) { | ~~^~~~~~~~~~~~~~~~