Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:58:23: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] dfs ( start , 1 ) ; ^