Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Stage | Winner | General classification | Points classification | Mountains classification | Young rider classification | Team classification | Combativity award |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Philippe Gilbert | Philippe Gilbert | Philippe Gilbert | Philippe Gilbert | Geraint Thomas | Omega Pharma-Lotto | Perrig Quemeneur |
| 2.0 | Garmin-Cervélo | Thor Hushovd | Philippe Gilbert | Philippe Gilbert | Geraint Thomas | Garmin-Cervélo | no award |
| 3.0 | Tyler Farrar | Thor Hushovd | José Joaquín Rojas | Philippe Gilbert | Geraint Thomas | Garmin-Cervélo | Mickaël Delage |
| 4.0 | Cadel Evans | Thor Hushovd | José Joaquín Rojas | Cadel Evans | Geraint Thomas | Garmin-Cervélo | Jérémy Roy |
| 5.0 | Mark Cavendish | Thor Hushovd | Philippe Gilbert | Cadel Evans | Geraint Thomas | Garmin-Cervélo | Iván Gutiérrez |
| 6.0 | Edvald Boasson Hagen | Thor Hushovd | Philippe Gilbert | Johnny Hoogerland | Geraint Thomas | Garmin-Cervélo | Adriano Malori |
| 7.0 | Mark Cavendish | Thor Hushovd | José Joaquín Rojas | Johnny Hoogerland | Robert Gesink | Garmin-Cervélo | Yannick Talabardon |
| 8.0 | Rui Costa | Thor Hushovd | Philippe Gilbert | Tejay van Garderen | Robert Gesink | Garmin-Cervélo | Tejay van Garderen |
| 9.0 | Luis León Sánchez | Thomas Voeckler | Philippe Gilbert | Johnny Hoogerland | Robert Gesink | Team Europcar | Flecha and Hoogerland |
| 10.0 | André Greipel | Thomas Voeckler | Philippe Gilbert | Johnny Hoogerland | Robert Gesink | Team Europcar | Marco Marcato |
| 11.0 | Mark Cavendish | Thomas Voeckler | Mark Cavendish | Johnny Hoogerland | Robert Gesink | Team Europcar | Mickaël Delage |
| 12.0 | Samuel Sánchez | Thomas Voeckler | Mark Cavendish | Samuel Sánchez | Arnold Jeannesson | Leopard Trek | Geraint Thomas |
| 13.0 | Thor Hushovd | Thomas Voeckler | Mark Cavendish | Jérémy Roy | Arnold Jeannesson | Garmin-Cervélo | Jérémy Roy |
| 14.0 | Jelle Vanendert | Thomas Voeckler | Mark Cavendish | Jelle Vanendert | Rigoberto Urán | Leopard Trek | Sandy Casar |
| 15.0 | Mark Cavendish | Thomas Voeckler | Mark Cavendish | Jelle Vanendert | Rigoberto Urán | Leopard Trek | Niki Terpstra |
| 16.0 | Thor Hushovd | Thomas Voeckler | Mark Cavendish | Jelle Vanendert | Rigoberto Urán | Garmin-Cervélo | Mikhail Ignatiev |
| 17.0 | Edvald Boasson Hagen | Thomas Voeckler | Mark Cavendish | Jelle Vanendert | Rigoberto Urán | Garmin-Cervélo | Rubén Pérez |
| 18.0 | Andy Schleck | Thomas Voeckler | Mark Cavendish | Jelle Vanendert | Rein Taaramäe | Garmin-Cervélo | Andy Schleck |
| 19.0 | Pierre Rolland | Andy Schleck | Mark Cavendish | Samuel Sánchez | Pierre Rolland | Garmin-Cervélo | Alberto Contador |
| 20.0 | Tony Martin | Cadel Evans | Mark Cavendish | Samuel Sánchez | Pierre Rolland | Garmin-Cervélo | no award |
| 21.0 | Mark Cavendish | Cadel Evans | Mark Cavendish | Samuel Sánchez | Pierre Rolland | Garmin-Cervélo | no award |
Question:
How many mountains classifications when Rui Costa is the winner?
Answer:
1.0