def AmFound(word:str,targ:str)->int:
    Letters=dict()
    Counter=0
    for let in targ:
        if let in Letters:
            Letters.update({let:Letters[let]-1})
        else:
            Letters.update({let:-1})

    for pos in range(len(targ)):
        if word[pos] in Letters:
            Letters.update({word[pos]:Letters[word[pos]]+1})
        else:
            Letters.update({word[pos]:+1})
        if Letters[word[pos]]==0:
            Letters.pop(word[pos])

    first=0
    for pos in range(len(targ),len(word)):
        if not Letters:
            Counter+=1

        if word[first] not in Letters:
            Letters.update({word[first]:-1})
        else:
            Letters.update({word[first]:Letters[word[first]]-1})
        if Letters[word[first]]==0:
            Letters.pop(word[first])

        if word[pos] not in Letters:
            Letters.update({word[pos]:1})
        else:
            Letters.update({word[pos]:Letters[word[pos]]+1})

        if Letters[word[pos]]==0:
            Letters.pop(word[pos])

        first+=1

    if not Letters:
        Counter+=1

    return Counter

print(AmFound("Hollo","ol"))