Compilare: main.cpp: In function 'int main()': main.cpp:58:25: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | res += bits[a].count(); | ^ main.cpp:68:59: warning: array subscript has type 'char' [-Wchar-subscripts] 68 | dppartial[i] = dppartial[i + 1] * (others[s[i]] + 1); | ^ main.cpp:69:32: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | res -= (others[s[i]] - bigger[s[i]] + 1) * dppartial[i + 1]; | ^ main.cpp:69:47: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | res -= (others[s[i]] - bigger[s[i]] + 1) * dppartial[i + 1]; | ^ main.cpp:71:45: warning: array subscript has type 'char' [-Wchar-subscripts] 71 | res += (dppartial[1]) * (others[s[0]] + 1) - 1; | ^