Compilare: main.c: In function 'main': main.c:37:17: warning: array subscript has type 'char' [-Wchar-subscripts] 37 | f1[v[i - m]]--; | ~^~~~~~~ main.c:38:17: warning: array subscript has type 'char' [-Wchar-subscripts] 38 | f1[v[i]]++; | ~^~~