make_inst: prepare data for the diet model

def make_inst():
    """make_inst: prepare data for the diet model"""
    F,c,d = multidict({       # cost # composition
        "QPounder" :  [ 1.84, {"Cal":510, "Carbo":34, "Protein":28,
                               "VitA":15, "VitC":  6, "Calc":30, "Iron":20}],
        "McLean"   :  [ 2.19, {"Cal":370, "Carbo":35, "Protein":24, "VitA":15,
                               "VitC": 10, "Calc":20, "Iron":20}],
        "Big Mac"  :  [ 1.84, {"Cal":500, "Carbo":42, "Protein":25,
                               "VitA": 6, "VitC":  2, "Calc":25, "Iron":20}],
        "FFilet"   :  [ 1.44, {"Cal":370, "Carbo":38, "Protein":14,
                               "VitA": 2, "VitC":  0, "Calc":15, "Iron":10}],
        "Chicken"  :  [ 2.29, {"Cal":400, "Carbo":42, "Protein":31,
                               "VitA": 8, "VitC": 15, "Calc":15, "Iron": 8}],
        "Fries"    :  [  .77, {"Cal":220, "Carbo":26, "Protein": 3,
                               "VitA": 0, "VitC": 15, "Calc": 0, "Iron": 2}],
        "McMuffin" :  [ 1.29, {"Cal":345, "Carbo":27, "Protein":15,
                               "VitA": 4, "VitC":  0, "Calc":20, "Iron":15}],
        "1% LFMilk":  [  .60, {"Cal":110, "Carbo":12, "Protein": 9,
                               "VitA":10, "VitC":  4, "Calc":30, "Iron": 0}],
        "OrgJuice" :  [  .72, {"Cal": 80, "Carbo":20, "Protein": 1,
                               "VitA": 2, "VitC":120, "Calc": 2, "Iron": 2}],
        })

    N,a,b = multidict({       # min,max intake
        "Cal"     : [ 2000,  None ],
        "Carbo"   : [  350,  375 ],
        "Protein" : [   55,  None ],
        "VitA"    : [  100,  None ],
        "VitC"    : [  100,  None ],
        "Calc"    : [  100,  None ],
        "Iron"    : [  100,  None ],
     })

    return F,N,a,b,c,d