這是AOPS對IMC難度的打分,這樣就有對比尺度了

The International Mathematical Competition (IMC) for University Students is a challenging contest, and its problems are generally considered to be at the intermediate to advanced levels of difficulty on the Art of Problem Solving (AoPS) scaleSpecifically, the IMC problems would fall within the 3-6 range on the AoPS competition difficulty scale, possibly even reaching into the 5-7 range for some of the more difficult problems. 

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