Compilare: user.cpp: In function ‘void unite(int, int)’: user.cpp:22:9: warning: variable ‘parA’ set but not used [-Wunused-but-set-variable] int parA,parB; ^ user.cpp: In function ‘void process_apm(int)’: user.cpp:45:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (h=0;h<apm.size() && siz_arb<=nodes-1;h++) ^