Cọp's WEBLOG

public class Main {
    public static void main(String[] args) {
         Scanner in=new Scanner(System.in);
        int n;
        n= in.nextInt();
        int i,nt;
        nt=0;
        if(n==0||n==1)
        {
        		System.out.println("khong la so ng to");
        	return;

        }

        if(n==2)
        {
        		System.out.println("la so ng to");
        	return ;
        }
        for(i=2;i<=n/2;++i)
            if(n%i==0)
            {
                nt=1;
                break;
            }
        if(nt==0)
            System.out.println("la so nguyen to:");
        else
            System.out.println("khong la so nguyen to:");
    }

}