def filtre_edat(nomf1, nomf2, any_inici, any_fi):
    with open(nomf1, 'r') as f:
        ldni = []
        for linia in f:
            linia = linia.strip()
            l = linia.split()
            if any_inici <= int(l[3]) <= any_fi:
                ldni.append(l[0])
    ldni.sort()
    with open(nomf2, 'w') as g:
        for dni in ldni:
            linia = dni + '\n'
            g.write(linia)