Someone

const int sedA[][16]={			{  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15},			{  1,  0,  3, -2,  5, -4, -7,  6,  9, -8,-11, 10,-13, 12, 15,-14},			{  2, -3,  0,  1,  6,  7, -4, -5, 10, 11, -8, -9,-14,-15, 12, 13},			{  3,  2, -1,  0,  7, -6,  5, -4, 11,-10,  9, -8,-15, 14,-13, 12},			{  4, -5, -6, -7,  0,  1,  2,  3, 12, 13, 14, 15, -8, -9,-10,-11},			{  5,  4, -7,  6, -1,  0, -3,  2, 13,-12, 15,-14,  9, -8, 11,-10},			{  6,  7,  4, -5, -2,  3,  0, -1, 14,-15,-12, 13, 10,-11, -8,  9},			{  7, -6,  5,  4, -3, -2,  1,  0, 15, 14,-13,-12, 11, 10, -9, -8},			{  8, -9,-10,-11,-12,-13,-14,-15,  0,  1,  2,  3,  4,  5,  6,  7},			{  9,  8,-11, 10,-13, 12, 15,-14, -1,  0, -3,  2, -5,  4,  7, -6},			{ 10, 11,  8, -9,-14,-15, 12, 13, -2,  3,  0, -1, -6, -7,  4,  5},			{ 11,-10,  9,  8,-15, 14,-13, 12, -3, -2,  1,  0, -7,  6, -5,  4},			{ 12, 13, 14, 15,  8, -9,-10,-11, -4,  5,  6,  7,  0, -1, -2, -3},			{ 13,-12, 15,-14,  9,  8, 11,-10, -5, -4,  7, -6,  1,  0,  3, -2},			{ 14,-15,-12, 13, 10,-11,  8,  9, -6, -7, -4,  5,  2, -3,  0,  1},			{ 15, 14,-13,-12, 11, 10, -9,  8, -7,  6, -5, -4,  3,  2, -1,  0}};