Compilare: user.cpp: In function ‘int cuplaj(int)’: user.cpp:32:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp:42:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘void suport(int)’: user.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘int cuplaj(int)’: user.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] } ^