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:
| Rank | Nation | Gold | Silver | Bronze | Total |
| --- | --- | --- | --- | --- | --- |
| 1 | Chinese Taipei (TPE) | 2 | 0 | 0 | 2 |
| 1 | Russia (RUS) | 2 | 0 | 0 | 2 |
| 3 | Great Britain (GBR) | 1 | 0 | 0 | 1 |
| 4 | Slovakia (SVK) | 0 | 2 | 2 | 4 |
| 5 | China (CHN) | 0 | 2 | 1 | 3 |
| 6 | Mexico (MEX) | 0 | 1 | 1 | 2 |
| 7 | Germany (GER) | 0 | 0 | 2 | 2 |
| 8 | South Korea (KOR) | 0 | 0 | 1 | 1 |
| 8 | Switzerland (SUI) | 0 | 0 | 1 | 1 |
| 8 | Thailand (THA) | 0 | 0 | 1 | 1 |
| 8 | Uzbekistan (UZB) | 0 | 0 | 1 | 1 |
Question:
how many countries have at least one gold medal?
Answer:
3