# include <iostream.h>
# include <fstream.h>


 int main () {
	long int a, b;
             int o=0;
		ifstream f("next.in") ;
		ofstream g("next.out") ;


		f>>a>>endl;
		f>>b;


	while (o==0) {
	      if (a%b)
		       o=1;
	          else
		          a++;

	      return 1;

	}


  g<<a;


	f.close();
	g.close();
        return 0 ;

	}