Six friends P, Q, R, S, T, and U are sitting at different positions in a row of the company, and each of them gets a different salary viz. 500, 800, 1000, 1500, 1800 and 2000 (not necessarily in the same order). The friend who gets a salary of 2000 does not sit at the extreme end of the row. Q sits immediately before R and gets a salary of 800. T sits between U and S. Q is second to the left of S. P sits at the left end of the row and gets a salary of 1000. T gets a salary of 1500. R gets a salary neither of 2000 nor of 1800. How much salary does U get?