Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[s].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void rezolvare()': main.cpp:32:15: warning: unused variable 'k' [-Wunused-variable] nv=i; int k=0,f,j; ^ main.cpp:32:19: warning: unused variable 'f' [-Wunused-variable] nv=i; int k=0,f,j; ^ main.cpp: In function 'int main()': main.cpp:49:9: warning: unused variable 'i' [-Wunused-variable] int i; dfs(1,0); ^