Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < lists[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:31: 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 = 0; i < leafs.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:79:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for (int j = 0; j < lists[leafs[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:90:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i = 0; i < leafs.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:92:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for (int j = 0; j < lists[leafs[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~