public class Test{
public static void main(String[] args)
{
long t = System.currentTimeMillis();
int j = 0;
Flag:
for (int i = 2;i <= 10; i++ )
{
for (j = 2;j <=Math.sqrt(i) ;j++ )
{
if (i % j == 0) continue Flag;
}
System.out.print(" "+i);
if(j % 5==0) System.out.println();
}
System.out.println();
System.out.println(System.currentTimeMillis()-t);
}
}