e_07

package ejercicio7;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class EJERCICIO7 {

 
    public static void main(String[] args) throws IOException {
        // TODO code application logic here
      int n,s;
          BufferedReader in=new BufferedReader(new  InputStreamReader(System.in));
 System.out.println("Numero: ");
 n=Integer.parseInt(in.readLine());//ojo
 s=(n*(n+1))/2;
 System.out.println("");
 System.out.println("Suma:" + s);
 System.out.println();
     
    }
}