03. Wolf In Sheep's Clothing

string = input().split(", ")

if string[-1] == "wolf":
    print("Please go away and stop eating my sheep")
else:
    sheep_counter = 0
    for i in range(len(string)-1, -1, -1):
        if string[i] == "sheep":
            sheep_counter += 1
        else:
            break
    print(f"Oi! Sheep number {sheep_counter}! You are about to be eaten by a wolf!")