import javax.swing.JOptionPane;

class httan
{
	public static void main(String args[])
	{
		String str;

		double a;
		double b;
		double c;
		double d;
		double e;
		double f;
		double g;

		str=
		JOptionPane.showInputDialog("drjt albrmjh 1");
		a=Double.parseDouble(str);

		str=
		JOptionPane.showInputDialog("drjt kwaed byanat orakle");
		b=Double.parseDouble(str);

		str=
		JOptionPane.showInputDialog("drjt alengleze");
		c=Double.parseDouble(str);

		str=
		JOptionPane.showInputDialog("drjt ryadeyat hasb");
		d=Double.parseDouble(str);

		str=
		JOptionPane.showInputDialog("drjt ryadeyat tkhssuseyh");
		e=Double.parseDouble(str);

		str=
		JOptionPane.showInputDialog("drjt ttbekhat hasb");
		f=Double.parseDouble(str);

		g=Double.parseDouble(str);

		if(g  >=95)
		JOptionPane.showMessageDialog(null , " A+ ");
		else if(g >=90)
		JOptionPane.showMessageDialog(null , " A ");
		else if(g >=85)
		JOptionPane.showMessageDialog(null , " B+ ");
		else if(g >=80)
		JOptionPane.showMessageDialog(null , " B ");
		else if(g >=75)
		JOptionPane.showMessageDialog(null , " C+ ");
		else if(g >=70)
		JOptionPane.showMessageDialog(null , " C ");
		else if(g >=65)
		JOptionPane.showMessageDialog(null , " D+ ");
		else if(g >=60)
		JOptionPane.showMessageDialog(null , " D ");
		else if(g <60 )
		JOptionPane.showMessageDialog(null , " E ");


		g = (a*3+b*2+c*3+d*2+e*3+f*2)/15/20;


		JOptionPane.showMessageDialog(null,"aldrjh alkleyh           "+g,"Results",
		JOptionPane.PLAIN_MESSAGE);
		System.exit(0);
	}
}