# ohjelma tasaa kulut, joita tekstitiedostossa on annettu
def totalcalc(dict):
    summa = 0
    for i in dict:
        summa = summa + float(dict[i])
    return summa

def main():
    tiedosto = input("Enter the name of the file: ")
    lahtotied = open(tiedosto, "r")
    dict = {}
    testi = {}
    for rivi in lahtotied:
        test = rivi.strip()
        name, sum = test.split(":")

        if name not in dict:
            dict[name] = sum
        elif name in dict:
            dict[name] = float(dict[name]) + float(sum)
    people = len(dict)
    total = totalcalc(dict)
    keskiarvo = total/people
    print("Total costs: {:.2f}e".format(total))
    print()
    for i in dict:
        dict[i] = float(dict[i]) - keskiarvo
    for i in dict:
        if dict[i] < -0.05:
            t = dict[i] * -1
            print(i + " has paid {:.2f} in the following amounts: ".format(t))
            print(i + " needs to pay {:.2f}e.".format(t))
            print()
        elif dict[i] > 0.05:
            print(i + " has paid {:.2f} in the following amounts: ".format(dict[i]))
            print(i + " needs to receive {:.2f}e.".format(dict[i]))
            print("")
        else:
            print(i + " has paid {:.2f} in the following amounts: ".format(dict[i]))
            print("No transfers needed.")
            print()
    print(testi)