Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int i = 0; i < lists[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void deleteLeafs()': main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int i = 0; i < leafs.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int j = 0; j < lists[leafs[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~