Compilare: main.cpp: In function 'void dfs(int)': main.cpp:11:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for(int i = 0; i < v[k].size(); i ++) | ~~^~~~~~~~~~~~~ main.cpp:10:10: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 10 | bool ok = false; | ^~ main.cpp: In function 'void dfs1(int)': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0; i < v[k].size(); i ++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 0; i < rez.size(); i ++) | ~~^~~~~~~~~~~~