Compilare: main.cpp: In function 'int dfs(int)': main.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type] 20 | } | ^ main.cpp: In function 'int main()': main.cpp:25:18: warning: unused variable 'j' [-Wunused-variable] 25 | int n, m, i, j, a, b, cnt=0; | ^ main.cpp: In function 'int dfs(int)': main.cpp:13:5: warning: infinite recursion detected [-Winfinite-recursion] 13 | int dfs(int nod) | ^~~ main.cpp:18:29: note: recursive call 18 | if(marked[i]==0) dfs(i); | ~~~^~~