Compilare: main.cpp: In function 'void citire()': main.cpp:11:9: warning: unused variable 'i' [-Wunused-variable] int i,a,b,j; ^ main.cpp: In function 'int dfs(int)': main.cpp:24:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[poz].size();++i) ~^~~~~~~~~~~~~~ main.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^