Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: array subscript has type 'char' [-Wchar-subscripts] if(a[z[r]] == 0) ^ main.cpp:16:15: warning: array subscript has type 'char' [-Wchar-subscripts] a[z[r]]++; ^ main.cpp:18:22: warning: array subscript has type 'char' [-Wchar-subscripts] if(a[z[l]] > 0){ ^ main.cpp:19:22: warning: array subscript has type 'char' [-Wchar-subscripts] a[z[l]]--; ^ main.cpp:20:25: warning: array subscript has type 'char' [-Wchar-subscripts] if(a[z[l]] == 0) ^ main.cpp:10:56: warning: unused variable 'i' [-Wunused-variable] int a[150]{}, l = 0, r = 0, unic = 0, c, best = 0, i, n, besti = 0; ^