【水水水】678A
#include<stdio.h>
#include<iostream>
#include<cstdio>
#include<queue>
#include <vector>
#include<stack>
#include<cmath>
#include<cstring>
#include<cstdlib>
#include<climits>
#include<algorithm>
using namespace std;
#define ll unsinged long long
#define PI acos(-1.0)
#define ING 0x7fffffff
#define INF 0x3f3f3f3f
typedef long long LL;
#define N 1010
int main()
{
int a,b;
cin>>a>>b;
printf("%d
",(a/b+1)*b);
return 0;
}