Numerical analysis

How do I construct two vectors? $ a, b in mathbb {R} ^ {n} $, $ a = (a_1, a_2, ldots a_n) ^ {T} $ and $ b = (b_1, b_2, ldots b_n) ^ {T} $ which meet the following conditions
The begin {align}
& a_ib_i geq 1, a_ib_j<1, ineq j, quad i,j=1,2,ldots n,\ & or\ & a_ib_i> 1, a_ib_j leq1, i neq j, quad i, j = 1,2, ldots n.
End {align}