Compilare: main.cpp: In member function 'int edges::push_neighbour(int)': main.cpp:16:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void read_edges(edges*, unsigned int&, unsigned int&)': main.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=m;i++){ ~^~~ main.cpp: In function 'void recursion(edges*, int*, int, unsigned int, unsigned int&)': main.cpp:29:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == n+1) ~~~~^~~~~~ main.cpp: In function 'void solve(edges*, int*, unsigned int, unsigned int&)': main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~