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package factorielentier;

/**
 *
 * @author therbron
 */
public class FactorielEntier {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        int entier = 20;
        long resultat = 1;
        
        for(int i = entier; i >= 1; i--)
        {
            resultat = resultat * i;
        }
        
        System.out.println(resultat);
    }
    
}