#include<stdio.h>
#define INFINIT 100000000
int main()
{   
	long long div=0,nr=0,k=0;
	FILE *i,*o;
	i=fopen("next.in","r");
	o=fopen("next.out","w");
    fscanf(i,"%lld\n",&nr);
	fscanf(i,"%lld",&div);
    for(k=nr;k<=INFINIT;k++)
	{
		if(k%div==0)
		{
		fprintf(o,"%lld",k);
	    break;
		};
	};
return 0;
}