Compilare: main.cpp: In function 'int main()': main.cpp:13:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<A.size()){ ~^~~~~~~~~ main.cpp:19:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<A.size()){ ~^~~~~~~~~ main.cpp:30:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<B.size()){ ~^~~~~~~~~ main.cpp:35:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==A.size()){ ~^~~~~~~~~~ main.cpp:38:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] }else if(i<B.size()){ ~^~~~~~~~~