import time

def sleep():
    time.sleep(1)
    return x
x = 100

while True:
    print("Type START to start the countdown")
    cmd = input()
    start = cmd.lower();
    if start == "start":
        while x > 0:
            print(x)
            sleep()
            x -=1
        print("Hey Doods :D")
        continue
    else:
        print("Invalid Word!")