| problem_set_id,start_at,end_at | |
| 1466234914143928320,, | |
| 1468062791209390080,, | |
| 1468193512915619840,2021-12-07 20:18:00,2021-12-31 22:18:00 | |
| 1468442750970908672,2021-12-08 12:49:00,2021-12-20 19:00:00 | |
| 1468562451816583168,2021-12-08 20:45:00,2021-12-08 22:45:00 | |
| 1468834274078511104,2021-12-09 14:45:00,2021-12-09 16:45:00 | |
| 1468897574497701888,2021-12-09 18:56:00,2021-12-10 14:23:00 | |
| 1469192228753256448,2021-12-10 14:28:00,2021-12-10 16:28:00 | |
| 1469794823975272448,2021-12-13 07:45:00,2021-12-13 12:15:00 | |
| 1469995563026624512,2021-12-15 10:20:00,2021-12-15 12:30:00 | |
| 1470302187983798272,2021-12-14 08:30:00,2021-12-14 17:57:00 | |
| 1470348656452419584,, | |
| 1470365945852211200,2021-12-14 08:30:00,2021-12-14 10:25:00 | |
| 1470549156850970624,2021-12-14 08:30:00,2021-12-14 09:49:00 | |
| 1470580993085710336,2021-12-14 10:26:00,2021-12-14 23:26:00 | |
| 1470945062968504320,2021-12-15 10:32:00,2021-12-15 12:50:00 | |
| 1471424283692118016,2021-12-16 18:15:00,2021-12-16 20:15:00 | |
| 1471427558260121600,2021-12-17 08:20:00,2021-12-17 10:10:00 | |
| 1471454190680211456,2021-12-17 08:20:00,2021-12-17 10:10:00 | |
| 1472182309306904576,2021-12-18 20:29:00,2021-12-18 22:29:00 | |
| 1472406327078797312,2021-12-19 12:00:00,2021-12-28 12:00:00 | |
| 1472843578497605632,2021-12-20 16:16:00,2022-01-02 23:59:00 | |
| 1472901067343699968,2021-12-23 21:09:00,2021-12-23 23:09:00 | |
| 1473107679500107776,2021-12-22 16:20:00,2021-12-22 18:20:00 | |
| 1473632793271508992,2021-12-25 09:00:00,2021-12-25 22:00:00 | |
| 1474257821424562176,2021-12-28 10:30:00,2021-12-28 23:59:00 | |
| 1474263644237840384,2022-01-01 08:50:00,2022-01-01 11:30:00 | |
| 1474302523502899200,2021-12-24 16:30:00,2022-01-02 23:59:00 | |
| 1474540396125159424,2021-12-25 09:00:00,2021-12-27 23:59:00 | |
| 1475374846108016640,, | |
| 1475626255194402816,2021-12-28 08:33:00,2022-01-02 00:59:00 | |
| 1477578492933685248,2022-01-02 17:49:00,2022-01-03 23:59:00 | |
| 1477578646406365184,2022-01-02 17:52:00,2022-01-03 23:59:00 | |
| 1478926806202515456,2022-01-06 11:00:00,2022-01-06 18:00:00 | |
| 1496078306227273728,2022-02-22 19:03:00,2022-02-22 21:03:00 | |
| 1498821569718390784,2022-03-02 08:42:00,2022-03-04 10:42:00 | |
| 1501832903850520576,2022-03-28 19:30:00,2022-03-28 21:30:00 | |
| 1503379938484039680,2022-03-17 14:00:00,2022-10-30 23:59:00 | |
| 1512600151250837504,2022-04-12 17:30:00,2022-04-12 19:30:00 | |
| 1512694231993778176,2022-04-16 10:00:00,2022-04-16 11:00:00 | |
| 1513007757329268736,2022-04-10 12:10:00,2022-07-08 22:42:00 | |
| 1513008128428482560,2022-04-10 12:16:00,2022-07-08 22:43:00 | |
| 1514080961988816896,2022-04-13 11:19:00,2022-04-15 13:19:00 | |
| 1514082230544801792,2022-04-13 11:24:00,2022-04-15 13:24:00 | |
| 1514816780735246336,2022-04-15 21:20:00,2022-04-15 21:40:00 | |
| 1514952034758123520,2022-04-16 09:00:00,2022-04-16 09:30:00 | |
| 1514964037644218368,2022-04-15 21:50:00,2022-04-15 21:55:00 | |
| 1515145393172291584,2022-04-16 13:30:00,2022-04-16 14:00:00 | |
| 1516196274444152832,2022-04-19 14:00:00,2022-04-20 23:59:00 | |
| 1519647132095627264,2022-04-29 14:00:00,2022-04-29 15:40:00 | |
| 1523845578549784576,2022-05-10 09:59:00,2022-05-10 11:59:00 | |
| 1579672101082365952,2022-10-11 11:15:00,2022-11-10 13:15:00 | |
| 1582914903832608768,2022-10-30 10:00:00,2022-11-30 12:00:00 | |
| 1585509783845765120,2022-10-28 14:00:00,2022-10-30 23:59:00 | |
| 1586155202808414208,, | |
| 1586169925041938432,2022-10-31 14:00:00,2022-11-06 23:59:00 | |
| 1586898223917203456,2022-10-31 14:00:00,2022-11-07 23:59:00 | |
| 1587031694568353792,2022-10-31 18:39:00,2022-10-31 20:39:00 | |
| 1587391836287692800,2022-11-02 09:15:00,2022-11-02 10:35:00 | |
| 1587394324524990464,2022-11-03 16:50:00,2022-11-03 17:58:00 | |
| 1587396445295116288,2022-11-03 15:15:00,2022-11-03 16:15:00 | |
| 1587448233796857856,2022-11-03 14:15:00,2022-11-03 18:05:00 | |