Compilare: main.cpp: In function 'int connect(int)': main.cpp:13:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(int it = 0; it < adj[node].size(); ++ it) | ~~~^~~~~~~~~~~~~~~~~~ main.cpp:16:1: warning: no return statement in function returning non-void [-Wreturn-type] 16 | } | ^ main.cpp: In function 'int main()': main.cpp:39:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int it = 0; it < component[i - 1].size(); ++ it) | ~~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:47:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int it = 0; it < component[i].size(); ++ it) | ~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int connect(int)': main.cpp:9:5: warning: infinite recursion detected [-Winfinite-recursion] 9 | int connect(int node) | ^~~~~~~ main.cpp:15:20: note: recursive call 15 | connect(adj[node][it]); | ~~~~~~~^~~~~~~~~~~~~~~