Compilare: main.cpp: In function 'void getTotal()': main.cpp:31:19: warning: array subscript has type 'char' [-Wchar-subscripts] total[S[i]][0]++; ^ main.cpp:47:20: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp:47:40: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp:47:69: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp:49:20: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp:49:40: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp:49:69: warning: array subscript has type 'char' [-Wchar-subscripts] total[c][nrt] = 2 * total[c][nrt - 1] + 2 * total[inv(c)][nrt - 1]; ^ main.cpp: In function 'long long int cnt(int, long long int, char)': main.cpp:79:27: warning: array subscript has type 'char' [-Wchar-subscripts] ret += total[c][nr - 1]; ^ main.cpp:81:32: warning: array subscript has type 'char' [-Wchar-subscripts] ret += total[inv(c)][nr - 1]; ^ main.cpp: In function 'int main()': main.cpp:93:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] cin >> k >> q >> S + 1; ~~^~~