37번

package JavaFestival;

import java.util.Scanner;

public class jar37 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.print("입력 : ");
		int a = sc.nextInt();
		int num=1;
		
		System.out.print("출력 : ");
		for(int i=1;i<=a;i++) {
			num*=i;
		}
		System.out.print(num);
	}
}