表达式6: "L" equals left bracket, 0... "n" squared minus 1 , right bracketL=0...n2−1
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表达式7: "n" equals 20n=20
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表达式8: "X" equals mod left parenthesis, "L" , "n" , right parenthesis minus StartFraction, "n" Over 2 , EndFractionX=modL,n−n2
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表达式9: "Y" equals floor left parenthesis, StartFraction, "L" Over "n" , EndFraction , right parenthesis minus StartFraction, "n" Over 2 , EndFractionY=floorLn−n2
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表达式10: "g" equals hsv left parenthesis, 0 , 0 , "r" left parenthesis, "X" , "Y" , right parenthesis squared , right parenthesisg=hsv0,0,rX,Y2