Score : $200$ points
You are given an integer $N$.
Do the following operation $K$ times on it and print the resulting integer.
Input is given from Standard Input in the following format:
$N$ $K$
Print the answer as an integer.
2021 4
50531
Applying the operation on $N=2021$ results in $N$ becoming $2021 \rightarrow 2021200 \rightarrow 10106 \rightarrow 10106200 \rightarrow 50531$.
40000 2
1
8691 20
84875488281
The answer may not fit into the signed $32$-bit integer type.