Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:13:23: 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 < v[x].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, int, int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i = 0; i < v[x].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void rez(int)': main.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int i = 0; i < v[x].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:41:17: warning: 'im' may be used uninitialized in this function [-Wmaybe-uninitialized] 41 | nrd[im] += nrd[x]; | ~~~~~~~~^~~~~~~~~