Compilare: main.cpp: In function 'int main()': main.cpp:23:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x!=s.size()) ~^~~~~~~~~~ main.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[i].size();) ~^~~~~~~~~~~~ main.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x!=aux.size()+rez.size()+1) ~^~~~~~~~~~~~~~~~~~~~~~~~~