Compilare: user.cpp: In function ‘void cerinta1()’: user.cpp:39:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int cerinta2()’: user.cpp:69:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp:81:1: warning: control reaches end of non-void function [-Wreturn-type] } ^