# include <cstdlib>
# include <iostream>
# include <cmath>

using namespace std;

int main ( )
{
  float t, vx, vy, x, y;
  
  vx = 100;
  vy = 200;

  for ( t = 0; t <= 20; t++ )
  {
    x = vx * t;
    y = vy * t - 16.0 * t * t;
    cout << t << "  " << x << "  " << y << "\n";
//
//  Stop if the arrow has returned to the ground.
//
    if ( y <= 0.0 && 0.0 < t )
    {
      cout << "The arrow landed by " << t << " seconds.\n";
      break;
    }
  }

  return 0;
}