text=input()
pSamohlasek=0
for x in text:
    if x == "a":
        pSamohlasek=pSamohlasek+1
    elif x == "e":
        pSamohlasek=pSamohlasek+1
    elif x == "i":
        pSamohlasek=pSamohlasek+1
    elif x == "o":
        pSamohlasek=pSamohlasek+1
    elif x == "u":
        pSamohlasek=pSamohlasek+1
print("Počet samohlásek je",pSamohlasek)