Compilare: main.cpp: In function 'int main()': main.cpp:26:43: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | v[i] = {v[nr - 1].first + dir[ch].first,v[nr - 1].second + dir[ch].second}; | ^~ main.cpp:26:76: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | v[i] = {v[nr - 1].first + dir[ch].first,v[nr - 1].second + dir[ch].second}; | ^~ main.cpp:61:33: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized] 61 | fout<<cnt<<' '<<sx + 1<<'\n'; | ^~~~