Compilare: main.cpp:63:2: warning: backslash-newline at end of file }\ main.cpp: In function 'int32_t main()': main.cpp:40:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll c=0;c<v[j].size();c++) ~^~~~~~~~~~~~ main.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll j=0;j<v[i].size();j++) ~^~~~~~~~~~~~