回复：IMO 2009

rank Country Gold Silver Bronze

1 People's Republic of China 6 0 0
2 Japan 5 0 1
3 Russian Federation 5 1 0
4 Republic of Korea 3 3 0
5 Democratic People's Republic of Korea 3 2 1
6 United States of America 2 4 0
7 Thailand 1 5 0
8 Turkey 2 4 0
9 Germany 1 4 1
10 Belarus 1 4 1
11 Taiwan 1 5 0
12 Italy 2 2 2
13 Romania 2 2 2
14 Ukraine 3 1 2
15 Vietnam 2 2 2
16 Islamic Republic of Iran 1 4 1
17 Brazil 1 3 2
18 Canada 1 3 2
19 United Kingdom 1 3 2
20 Bulgaria 1 3 2