#define A4(x) (x),(x),(x),(x)
#define A16(x) A4(x),A4(x),A4(x),A4(x)
#define A64(x) A16(x),A16(x),A16(x),A16(x)
#define A256(x) A64(x),A64(x),A64(x),A64(x)

const uint8_t ar[256] = { A256(0xFF) };