Compilare: user.cpp: In function ‘void dijkstraa(long long int*, int*, int)’: user.cpp:55:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:106:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < sola.size() ; i++ ) ^ user.cpp:110:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < solb.size() ; i++ ) ^ user.cpp:114:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < solc.size() ; i++ ) ^ user.cpp: In member function ‘bool compara::operator()(const int&, const int&)’: user.cpp:26:5: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:69:28: warning: ‘index’ may be used uninitialized in this function [-Wmaybe-uninitialized] int minim = 0x3f3f3f3f,index,i,ia,ib,ic; ^