def create_table(x,y): if 0 < x <= 9 and 0 < y <= 9: global mytable mytable = [[i + j for j in range(y)] for i in range(x)] print('0') else: print('-1') def func(x,a): return True if x in range(a) else False def exchange_value(x1,y1,x2,y2): if all(map(func,[x1,x2],[a,a])) and all(map(fun...