Compilare: main.cpp: In function 'void dfs(int, std::vector<bool>&, std::vector<std::vector<int> >&)': main.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int i = 0; i < lists[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void deleteLeafs(std::vector<int>&, std::vector<std::vector<int> >&)': main.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i = 0; i < leafs.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:26:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int j = 0; j < lists[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~