@@ -0,0 +1,349 @@
+import java.io.*;%0Aimport java.util.*;%0A%0Apublic class p28%7B%0A    public static void main(String args%5B%5D)throws Exception%7B%0A        Scanner scin = new Scanner(System.in);%0A        int i = scin.nextInt(),j=1;%0A        double x=1;%0A        do%7B%0A            x=x*j;%0A            j=j+1;%0A        %7Dwhile (j%3C=i);%0A%0A        System.out.println(String.valueOf(x));%0A    %7D%0A%7D%0A

Create p28.java