require 'opl'

lp = maximize(
    "1400x1 + 0x1 + 100x2 + 0x2 + 2620x3 + 0x3 + 100x4 + 0x4 + 100x5 + 0x5 + 100x6 + 0x6 + 100x7+ 0x7 + 100x8 + 0x8 + 100x9 + 0x9 + 1400x10 + 0x10 +1400x11 + 0x11 + 100x12 + 0x12 + 2620x13 + 0x13 + 100x14 + 0x14 + 100x15 + 0x15 + 100x16 + 0x16 + 100x17+ 0x17 + 100x18 + 0x18 + 100x19 + 0x19 + 100x20 + 5x20",
subject_to([
    "400x1 + 2800x2 + 180x3 + 180x4 + 180x5 + 180x6 + 180x7 + 180x8 + 180x9 + 200x10 + 400x11 + 2800x12 + 180x13 + 180x14 + 180x15 + 180x16 + 180x17 + 180x18 + 180x19 + 200x20 <= 3380",
    "0.0x1 + 0.0x2 + 1.5x3 + 0.0x4 + 0.0x5 + 0.0x6 + 0.0x7 + 0.0x8 + 0.0x9 + 0.0x10 + 2.1x11 + 1.0x12 + 2x13 + 1.0x14 + 1.2x15 + 2x16 + 3x17 + 1.5x18 + 1.9x19 + 0x20 <= 1.5",
    "x1 >= 0",
    "x2 >= 0",
    "x3 >= 0",
    "x4 >= 0",
    "x5 >= 0",
    "x6 >= 0",
    "x7 >= 0",
    "x8 >= 0",
    "x9 >= 0",
    "x10 >= 0",
    "x11 >= 0",
    "x12 >= 0",
    "x13 >= 0",
    "x14 >= 0",
    "x15 >= 0",
    "x16 >= 0",
    "x17 >= 0",
    "x18 >= 0",
    "x19 >= 0",
    "x20 >= 0"
],[
    "BOOLEAN: x1",
    "BOOLEAN: x2",
    "BOOLEAN: x3",
    "BOOLEAN: x4",
    "BOOLEAN: x5",
    "BOOLEAN: x6",
    "BOOLEAN: x7",
    "BOOLEAN: x8",
    "BOOLEAN: x9",
    "BOOLEAN: x10",
    "BOOLEAN: x11",
    "BOOLEAN: x12",
    "BOOLEAN: x13",
    "BOOLEAN: x14",
    "BOOLEAN: x15",
    "BOOLEAN: x16",
    "BOOLEAN: x17",
    "BOOLEAN: x18",
    "BOOLEAN: x19",
    "BOOLEAN: x20"
]
))

puts lp.solution
puts lp.objective.optimized_value