Compilare: user.cpp: In function ‘void bellford(int, int)’: user.cpp:64:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i=0; i<graf[nod].size();++i ){ ^ user.cpp:66:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(drum[nod]+graf[nod][i].second<drum[graf[nod][i].first]) ^ user.cpp: In function ‘int print(int, int)’: user.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] } ^