def packages(set1,set2,set3):
    nums =[0]*151
    for a in range (150//set1+1):
        for b in range ((150-a*set1)//set2+1):
            for c in range ((150-a*set1-b*set2)//set3+1):
                nums[a*set1+b*set2+c*set3] = 1
                notPossible = [i for i in range (151) if nums[i] != 1]
    return notPossible[-1]