If the number of candidates for each pixel grows too large (as is common in algorithms such as Knoll and Yliluoma) then sorting the candidate list for every pixel can have a significant impact on performance. A solution is to instead sort the palette in advance and keep a separate tally of weights for every palette colour. The weights can then be accumulated by iterating linearly through the tally of sorted colours.
故乡也变得有点叫人“不认识”了。春节假期回去了一趟，那种熟悉的陌生，让人感慨系之。曾经，一两年回乡一次，观感和记忆中没什么两样。而今，依稀是旧景，却又处处透着不同。假期，景点免票、公交免费，市民游客逛得开心、行得便捷。曾经零落破旧的荒废小园、堆满建筑废料的断头路，摇身一变都成了“口袋公园”。欢声笑语替代了往日沉寂，人们或跑步、或打球，或有三五儿童在玩沙。
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The Games were full of contrasts. From a sporting perspective, the gentle gracefulness that I observed at the figure skating was offset by the full-on brutality of ice hockey brawls, while the delicate precision of curling was juxtaposed by the frantic chaos of short-track speed skating. From a geographical and cultural perspective, Livigno, which is perched high up in the Alps close to Switzerland, seemed like a giant playground for modern snow sports – geared towards those who like to twist and twirl high in the sky – while Cortina, in the Dolomites, was far more old-fashioned and populated by the traditional skiing establishment. Milan, meanwhile, featured a cluster of modernist, edge-of-town arenas, with international fans happily catching the metro to and from the events. But, in my experience, transportation wasn’t always so convenient. The huge amount of travelling between venues – I went to all but one – was exhausting and getting a late night bus over the mountains between Livigno and Bormio in a blizzard felt a bit hairy.
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