Compilare: main.cpp: In function 'int main()': main.cpp:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<A.size(); i++) ~^~~~~~~~~ main.cpp:24:15: warning: statement has no effect [-Wunused-value] lg-p[lg-1]; ~~^~~~~~~~ main.cpp:32:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<B.size(); i++) ~^~~~~~~~~ main.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lg==A.size()) ~~^~~~~~~~~~