AMERICAN MANAGEMENT SYSTEMS <AMSY.O> 1ST QTR NET shr 21 cts vs 18 cts net 1,068,000 vs 902,000 revs 38.1 mln vs 29.7 mln avg shrs 5,177,000 vs 5,120,000 NOTE: shr reflects 2-for-1 stock split on June 9, 1986