CodeForces

A. Johny Likes Numbers

time limit per test

0.5 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Johny likes numbers n and k very much. Now Johny wants to find the smallest integer x greater than n, so it is divisible by the number k.

Input

The only line contains two integers n and k (1 ≤ n, k ≤ 109).

Output

Print the smallest integer x > n, so it is divisible by the number k.

Examples

input

5 3

output

6

input

25 13

output

26

input

26 13

output

39

解题思路：看代码就懂了

AC代码：

#include<cstdio>int main(){int n, k, mod;scanf("%d%d", &n, &k); mod = (n / k) * k + k;printf("%d", mod);return 0;}