1 line
209 B
Python
1 line
209 B
Python
print(-1 if (lambda x : x[0] < x[1] or ((x[0] + x[1]) % 2 != 0 and (x[0] - x[1]) % 2 != 0))(s := list(map(int,input().split()))) else ' '.join((lambda x : list([str((x[0]+x[1])//2), str((x[0]-x[1])//2)]))(s))) |