import java.util.Scanner;
class Small{
public static void main
(String[] args
){ Scanner scn
=new Scanner
(System.
in);int a[]=new int[5];
for(int i=0;i<=a.length-1;i++){
a[i]=scn.nextInt();
}
for(int i=1;i<=a.length-1;i++){
System.
out.
println(factorial
(a
[i
]));
}}
static int factorial(int i){
if(i==1){
return 1;
}
else{
return i*factorial(i-1);
}}}
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