Compilare: user.cpp: In function ‘void prim(int)’: user.cpp:34:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < v[nod_curent].size(); i++ ) { ///adaugam muchile vecinilor nodului curent ~~^~~~~~~~~~~~~~~~~~~~~~ user.cpp:49:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( apm.size() == n - 1 ) ~~~~~~~~~~~^~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:77:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < apm.size(); i++ ) ~~^~~~~~~~~~~~