.[ 3443 @ @pbjïØ Üa@ @QV 400 ] [Gauss 2011] ( ) 101 4 [Gauss 2009] ( ) 3 21 18 40 [Gauss 2009] ( ) . 12 15 6 (1 0 ) () : 00 1 [AMC10B 2012] ( ) . 200 [AMC10A 2011] ( ) 1,2, 5, 7, 8, 9 700 ADBEC [AMC10A 2011] ( )