def les_tall_fra_fil(filnavn):
    l = []
    f = open(filnavn, "r")
    for line in f:
        tall = int(line.strip())
        l.append(tall)

    return l


def antall_forekomster(l, tall):
    teller = 0

    for t in l:
        if t == tall:
            teller += 1
            
    return teller

def flest_forekomster(l):
    teller = {}
    
    for tall in l:
        if tall in teller:
            teller[tall] += 1
        else:
            teller[tall] = 1

    st?rst = l[0]
    for tall, ant in teller.items():
        if ant > teller[st?rst]:
            st?rst = tall

    return st?rst

tall = les_tall_fra_fil("input.txt")
print(flest_forekomster(tall))
print(flest_forekomster("hei hei du du du jeg er en fisk".split()))