v5.15.0

What's Changed

• [hyer0705] WEEK 15 solutions by @hyer0705 in #1962
• [yhkee0404] WEEK 15 solutions by @yhkee0404 in #1965
• [SeongA] WEEK 15 solutions by @delight010 in #1964
• [rivkode] WEEK 15 solutions by @rivkode in #1963
• [hu6r1s] WEEK 15 Solutions by @hu6r1s in #1966
• [Lustellz] WEEK 15 solution by @Lustellz in #1967

Full Changelog: v5.14.0...v5.15.0