Compilare: main.cpp: In function 'void read()': main.cpp:25:31: warning: array subscript has type 'char' [-Wchar-subscripts] 25 | nr[have[x + 1]]--; | ^ main.cpp:27:31: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | nr[have[x + 1]]++; | ^ main.cpp:32:23: warning: array subscript has type 'char' [-Wchar-subscripts] 32 | nr[have[x]]--; | ^ main.cpp:34:23: warning: array subscript has type 'char' [-Wchar-subscripts] 34 | nr[have[x]]++; | ^