Description

RYC promised to wear a skirt a long time ago, but he regretted it, and the unruly CSB wanted him to obey the agreement. So RYC said that he would not wear as a winner in a hearthstone, but if he lost, he would wear a skirt.

We will simplify the game. In this game, they both have X HP, but RYC will have N monsters (N <= 100). At the begin of each round, CSB will draw a card first, then he can deal 1 damage to one of living enemy, then RYC will also draw a card, then he can add 3 HP for himself (can exceed the initial HP), and command his monsters to attack CSB, each monster can deal 1 damage to CSB, and each monster has 3 HP. If a monster's HP is less than 1, he will die. It is worth mentioning that whenever RYC monsters receive an attack, RYC draws a card.

Now the game is starting, but there are no cards in both of them, so every time they draw, they will receive i damage, (i starts at 1 and adds 1 each time). And CSB does first. If a person's HP is less than or equal to 0, he will lose. So, can CSB beat RYC in the end?

Format

Input

A number X, a number N.(X<100000,N<=150)

Output

If CSB can defeat RYC, it outputs "skirt!". If can't beat him, output "Damn it!"

Samples

10 1
10 10

skirt!
Damn it!

Hints

The first case:CSB wil get damage = 1+2+1+3+1 = 8

RYC will get damage = 1+2-3+3+4-3+5+6=15

So,RYC will wear a beautiful skirt!