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 | China (CHN) | 14 | 10 | 12 | 36 |
| 2 | Thailand (THA) | 13 | 9 | 6 | 28 |
| 3 | South Korea (KOR) | 6 | 7 | 10 | 23 |
| 4 | Indonesia (INA) | 6 | 6 | 4 | 16 |
| 5 | Chinese Taipei (TPE) | 3 | 6 | 6 | 15 |
| 6 | India (IND) | 2 | 0 | 1 | 3 |
| 7 | Iran (IRI) | 2 | 0 | 0 | 2 |
| 8 | Japan (JPN) | 1 | 3 | 2 | 6 |
| 9 | Afghanistan (AFG) | 1 | 0 | 0 | 1 |
| 9 | Qatar (QAT) | 1 | 0 | 0 | 1 |
| 11 | Philippines (PHI) | 0 | 2 | 2 | 4 |
| 12 | Vietnam (VIE) | 0 | 2 | 1 | 3 |
| 13 | Kazakhstan (KAZ) | 0 | 1 | 1 | 2 |
| 13 | Pakistan (PAK) | 0 | 1 | 1 | 2 |
| 15 | Bahrain (BRN) | 0 | 1 | 0 | 1 |
| 15 | Turkmenistan (TKM) | 0 | 1 | 0 | 1 |
| 17 | Sri Lanka (SRI) | 0 | 0 | 2 | 2 |
| 18 | Bangladesh (BAN) | 0 | 0 | 1 | 1 |
| 18 | Brunei (BRU) | 0 | 0 | 1 | 1 |
| 18 | Laos (LAO) | 0 | 0 | 1 | 1 |
| 18 | Mongolia (MGL) | 0 | 0 | 1 | 1 |
| 18 | Palestine (PLE) | 0 | 0 | 1 | 1 |
| 18 | Singapore (SIN) | 0 | 0 | 1 | 1 |
| Total | Total | 49 | 49 | 54 | 152 |
Question:
how many nations won no silver medals at all?
Answer:
11