! Bronson, 1.6 --- c1 = 7 or 7.000001
  MAX 7 x1 + 6 x2 + 9 x3
SUBJECT TO
     1)   4 x1 + 3 x2 + 5 x3 <= 30
     2)   2 x1 + 3 x2 + 3 x3 <= 20
END
! "General" integer (not INT, "binary") INTERESTING
! GIN 2