int s,x,y1,y2,y3,y4;
          cin>>s;

          x>=1000;

          while (x<=9999)
          {
              y1=x%10;
              x=x/10;
              y2=x%10;
              x=x/10;
              y3=x%10;
              x=x/10;
              y4=x;
              if(y1*y2*y3*y4==s)
              x++;

          }
          cout<<x;