private void btnExecute_Click(object sender, EventArgs e)
        {
            string           sportsmenName = txtSportsmenName.Text.Trim();
            StrategyRun      run           = StrategyRunFactory.make(cbRun.SelectedItem.ToString());
            StrategyJump     jump          = StrategyJumpFactory.make(cbJump.SelectedItem.ToString());
            StrategySwim     swim          = StrategySwimFactory.make(cbSwim.SelectedItem.ToString());
            Sportsmen        sportsmen     = new Sportsmen(sportsmenName, run, jump, swim);
            SportsmenCommand cmd           = (SportsmenCommand)lbCommands.SelectedItem;

            txtLog.AppendText(sportsmen.execute(cmd) + Environment.NewLine);
        }