Score : $200$ points
There are $A$ slimes.
Each time Snuke shouts, the slimes multiply by $K$ times.
In order to have $B$ or more slimes, at least how many times does Snuke need to shout?
Input is given from Standard Input in the following format:
$A$ $B$ $K$
Print the answer.
1 4 2
We start with one slime. After Snuke's first shout, we have two slimes; after his second shout, we have four slimes. Thus, he needs to shout at least twice to have four or more slimes.
7 7 10
We have seven slimes already at the start.
31 415926 5