{"leetcodeFrontendId":354,"name":"Russian Doll Envelopes","date":"05/08/2026","difficulty":"Hard","tags":["Greedy","LIS"],"rating":null,"youtubeUrl":"https://youtu.be/B1d2wV6mfzA","bilibiliUrl":"https://www.bilibili.com/video/BV1Gy4y1D7wt/"}