Compilare: main.cpp: In function 'int32_t main()': main.cpp:42:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll c=0;c<v[x].size();c++) ~^~~~~~~~~~~~ main.cpp:56:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:56:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(ll j=0;j<v[i].size();j++) ^~~ main.cpp:58:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' cout<<endl; ^~~~