import java.io.*;
class Fact{
public static void main(String args[]){
BufferedReader Br = new BufferedReader(new InputStreamReader(System.in));
try{
int fact=1;
System.out.println("Enter a number to find out factorial of a given number: \n" );
String nu = Br.readLine();
int n = Integer.parseInt(nu);
for(int i=2;i<=n;i++)
{
fact=fact*i;
}
System.out.println("Factorial of a given number is:" +fact);
}catch (IOException err){
System.out.println("Error reading line");
}
}
}
class Fact{
public static void main(String args[]){
BufferedReader Br = new BufferedReader(new InputStreamReader(System.in));
try{
int fact=1;
System.out.println("Enter a number to find out factorial of a given number: \n" );
String nu = Br.readLine();
int n = Integer.parseInt(nu);
for(int i=2;i<=n;i++)
{
fact=fact*i;
}
System.out.println("Factorial of a given number is:" +fact);
}catch (IOException err){
System.out.println("Error reading line");
}
}
}