Compilare: main.cpp: In function 'int top_sort(int)': main.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type] 29 | } | ^ main.cpp:23:5: warning: infinite recursion detected [-Winfinite-recursion] 23 | int top_sort(int node) { | ^~~~~~~~ main.cpp:26:38: note: recursive call 26 | if (!viz[vec.first]) top_sort(vec.first); | ~~~~~~~~^~~~~~~~~~~