Compilare: user.cpp: In function ‘void hasins(int)’: user.cpp:24:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < has[r].size() ; i++ ) ^ user.cpp: In function ‘void haserase(int)’: user.cpp:39:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < has[r].size() ; i++ ) ^ user.cpp: In function ‘int hassearch(int)’: user.cpp:53:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < has[r].size() ; i++ ) ^ user.cpp: In function ‘void DFS(int, int)’: user.cpp:74:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int hassearch(int)’: user.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type] } ^