Compilare: main.cpp: In function 'void DFS(int)': main.cpp:16:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void vecini(int, int)': main.cpp:29:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp:35:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vec.size()&&ok;i++) ~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:11: warning: unused variable 'm' [-Wunused-variable] int t,m,c,z,i,x,y; ^ main.cpp:44:13: warning: unused variable 'c' [-Wunused-variable] int t,m,c,z,i,x,y; ^