Compilare: main.cpp: In function 'void Solve()': main.cpp:30:9: warning: operation on 'nr' may be undefined [-Wsequence-point] res[++nr][0] = res[nr][1] = b; ^~~~ main.cpp:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<divizori.size();++i) ~^~~~~~~~~~~~~~~~ main.cpp:32:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i;j<divizori.size();++j) ~^~~~~~~~~~~~~~~~