Compilare: user.cpp: In function ‘int main()’: user.cpp:23:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] C[s[i]]++; ^ user.cpp:24:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[i]=C[s[i]]; ^ user.cpp:30:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] C[s[i]]++; ^ user.cpp:31:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[i]=C[s[i]]; ^ user.cpp:14:24: warning: variable ‘cn’ set but not used [-Wunused-but-set-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:28: warning: variable ‘l’ set but not used [-Wunused-but-set-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:31: warning: variable ‘t’ set but not used [-Wunused-but-set-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:34: warning: unused variable ‘o’ [-Wunused-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:37: warning: unused variable ‘z’ [-Wunused-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:43: warning: unused variable ‘j’ [-Wunused-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:14:46: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] long long n, y, p, cn, l ,t, o, z, i, j, m; ^ user.cpp:16:21: warning: ‘r’ may be used uninitialized in this function [-Wmaybe-uninitialized] char s[100002], r; ^