Compilare: main.cpp: In function 'void solve()': main.cpp:33:31: warning: array subscript has type 'char' [-Wchar-subscripts] 33 | nr[have[x + 1]]--; | ^ main.cpp:35:31: warning: array subscript has type 'char' [-Wchar-subscripts] 35 | nr[have[x + 1]]++; | ^ main.cpp:42:26: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | nr[have[a[i]]]--; | ^ main.cpp:44:26: warning: array subscript has type 'char' [-Wchar-subscripts] 44 | nr[have[a[i]]]++; | ^