├── LICENSE ├── README.md ├── art ├── hackerrank.png └── sql.png └── tasks ├── 1.md ├── 1.sql ├── 10.md ├── 10.sql ├── 11.md ├── 11.sql ├── 12.md ├── 12.sql ├── 13.md ├── 13.sql ├── 14.md ├── 14.sql ├── 15.md ├── 15.sql ├── 16.md ├── 16.sql ├── 17.md ├── 17.sql ├── 18.md ├── 18.sql ├── 19.md ├── 19.sql ├── 2.md ├── 2.sql ├── 20.md ├── 20.sql ├── 21.md ├── 21.sql ├── 22.md ├── 22.sql ├── 23.md ├── 23.sql ├── 24.md ├── 24.sql ├── 25.md ├── 25.sql ├── 26.md ├── 26.sql ├── 27.md ├── 27.sql ├── 28.md ├── 28.sql ├── 29.md ├── 29.sql ├── 3.md ├── 3.sql ├── 30.md ├── 30.sql ├── 31.md ├── 31.sql ├── 32.md ├── 32.sql ├── 33.md ├── 33.sql ├── 34.md ├── 34.sql ├── 35.md ├── 35.sql ├── 36.md ├── 36.sql ├── 37.md ├── 37.sql ├── 38.md ├── 38.sql ├── 39.md ├── 39.sql ├── 4.md ├── 4.sql ├── 40.md ├── 40.sql ├── 41.md ├── 41.sql ├── 42.md ├── 42.sql ├── 43.md ├── 43.sql ├── 44.md ├── 44.sql ├── 45.md ├── 45.sql ├── 46.md ├── 46.sql ├── 47.md ├── 47.sql ├── 48.md ├── 48.sql ├── 49.md ├── 49.sql ├── 5.md ├── 5.sql ├── 50.md ├── 50.sql ├── 51.md ├── 51.sql ├── 52.md ├── 52.sql ├── 53.md ├── 53.sql ├── 54.md ├── 54.sql ├── 55.md ├── 55.sql ├── 56.md ├── 56.sql ├── 57.md ├── 57.sql ├── 58.md ├── 58.sql ├── 59.md ├── 6.md ├── 6.sql ├── 7.md ├── 7.sql ├── 8.md ├── 8.sql ├── 9.md ├── 9.sql └── art ├── 1.png ├── 10.png ├── 11.png ├── 12.png ├── 13.png ├── 14.png ├── 15.png ├── 16.png ├── 17.png ├── 18.png ├── 19.png ├── 2.png ├── 20.png ├── 21.png ├── 22.png ├── 23.png ├── 24.png ├── 25.png ├── 26.png ├── 27.png ├── 28.png ├── 29.png ├── 3.png ├── 30.png ├── 31.png ├── 32.png ├── 33.png ├── 34.png ├── 35.png ├── 36.png ├── 37.png ├── 38.png ├── 39.png ├── 4.png ├── 40.png ├── 41.png ├── 42.png ├── 44.png ├── 45.png ├── 46.png ├── 47.png ├── 48.png ├── 49.png ├── 5.png ├── 50.png ├── 51.png ├── 52.png ├── 53.png ├── 54.png ├── 55.png ├── 56.png ├── 57.png ├── 58.png ├── 6.png ├── 7.png ├── 8.png └── 9.png /LICENSE: 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