Compilare: user.cpp: In function ‘void verificare()’: user.cpp:17:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[k].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:38:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<t[i].size(); j++) ^ user.cpp: In function ‘void verificare()’: user.cpp:22:38: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (qq==false) { nr++; h[v[k][poz]]=1; } ^