def sum a
    s = 0
    a.each {|x| s += x}
    s
end


noten = [
        4.0, # algdat
        3.3, # statistik
        2.0, # swe 1
        4.0, # datenbanken
        1.0, # compiler
        2.0, # maschprog
        2.0, # numerik
        3.0, # techphy
        4.0, # rechtech
        1.0, # rcr
        1.7  # sivs
]

noten_neu = [
        1.7, # c++
        2.7, # sysprog
        2.0, # twics
        2.0 # dva
    ]


def calcMark noten,ezs,awf,dipl,os,dako
    hMark = Array.new
    hMark.push((2.0+awf)/2)
    hMark.push(dipl)
    hMark.push(dipl)
    hMark.push(dipl)
    hMark.push(ezs)
    hMark.push(os)
    hMark.push(dako)
    res = sum(hMark + noten)/(hMark.length + noten.length)
    res.to_s[0..2]
end

aw = [2.0]
puts "Notenstand 17.07.2006: #{sum(noten)/noten.length}"
puts "Notenstand 28.07.2006 (ohne aw): #{sum(noten + noten_neu)/(noten.length + noten_neu.length)}"
puts "Notenstand 28.07.2006 (mit aw): #{sum(noten + noten_neu + aw)/(noten.length + noten_neu.length + aw.length)}"

m=[1.0,1.3,1.7,2.0,2.3,2.7,3.0,3.3,3.7,4.0]
good = Array.new
noten += noten_neu
m.each do |ezs|
    m.each do |os|
        m.each do |dako|
           m.each do |awf|
                m.each do |dipl|
                    mark = calcMark(noten,ezs,awf,dipl,os,dako).to_f
                    if mark <= 2.3
                        good.push([ezs,os,dako,awf,dipl,mark])
                    end
                    #puts "#{(ezs+os+dako)/3.0}/#{dipl}/#{awf}"
                end
            end
        end
    end
end

good.each{|ezs,os,dako,awf,dipl,mark| puts "#{((ezs + os + dako + awf + dipl)/5.0).to_s[0..2]}=#{mark}" }