Compilare: user.cpp: In function ‘int main()’: user.cpp:53:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((ii<v[i].size() || jj<v[j].size()) && dr!=1000000) ^ user.cpp:53:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ((ii<v[i].size() || jj<v[j].size()) && dr!=1000000) ^ user.cpp:54:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ii<=v[i].size() && jj<=v[j].size()) ^ user.cpp:54:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ii<=v[i].size() && jj<=v[j].size()) ^ user.cpp:109:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ii<v[i].size()) ^