import java.io.*;
class LanzVert
{
	private double vi;
	
	public final static double G = 9.80;
	
	public LanzVert(double vi)
	{
		this.vi = vi;
	}
	
	public double t_subida( )
	{
		return vi / G;	
	}
	
	public double alt_max( )
	{
		return 0.5 * t_subida( ) * vi;	
	}

	public double obtenerVelocidad(double t)
	{
		return -G * t + vi;	
	}

	public static void main(String arg[ ]) throws IOException
	{
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

		System.out.println("\n LANZAMIENTO VERTICAL \n");
	
		System.out.println(" Ingreso de  variables");
		System.out.println(" ---------------------\n");
	
		System.out.print(" velocidad inicial : ");
	
		double var = Double.parseDouble(in.readLine( ));

		LanzVert lanz = new LanzVert(var);	

		System.out.println("\n tiempo subida = " + Math.round(lanz.t_subida( )) + " s.\n");
	
		System.out.println(" altura maxima = " + Math.round(lanz.alt_max( )) + " m.\n");
	
		System.out.print("\n Ingrese un valor para t : ");
		var = Double.parseDouble(in.readLine( ));
	
		System.out.print("\n Velocidad para t : " + Math.round(var) + " = ");
		System.out.println(Math.round(lanz.obtenerVelocidad(var)) + " m/s.");
	
		System.out.println("\n  G : " + LanzVert.G);
		System.out.println( );
	}
}