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JohnAlfnov ♀

Rating

3662

Contribution

11

Usergroup

Default

Motto

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Accepted problems：448 problems

37 55 58 59 61 64 65 70 115 142 190 217 218 275 368 439 441 495 605 681 684 833 837 850 856 857 862 887 888 889 894 895 957 959 960 962 964 967 983 992 996 1000 1002 1057 1066 1067 1139 1144 1147 1166 1173 1174 1183 1184 1186 1191 1197 1202 1217 1228 1237 1238 1242 1243 1246 1250 1251 1252 1351 1427 1429 1436 1437 1440 1444 1454 1726 1764 1765 1767 1769 1770 1774 1775 1780 1785 1786 1787 1788 1789 1790 1807 1811 1812 1813 1816 1817 1821 1823 1824 1825 1833 1836 1837 1854 1856 1874 1877 1884 1885 1887 1905 1931 1963 2000 2009 2012 2017 2018 2019 2020 2068 2115 2120 2123 2142 2151 2153 2158 2178 2210 2213 2214 2215 2216 2218 2219 2220 2243 2265 2267 2281 2286 2290 2334 2348 2351 2376 2402 2408 2421 2426 2431 2438 2466 2467 2468 2470 2471 2507 2548 2550 2554 2563 2584 2586 2603 2615 2621 2824 2842 2850 2852 2985 3020 3066 3098 3101 3149 3246 3264 3269 3275 3295 3301 3307 3502 3503 3506 3510 3553 3555 3838 3845 4009 4050 4053 4055 4171 4220 4241 4243 4252 4357 4553 4612 4629 4635 4660 4661 4686 4786 4788 4793 4795 4802 4805 4808 4809 4828 4878 4881 4884 4887 4889 4899 4909 4920 5013 5016 5017 5019 5022 5092 5096 5100 5163 5165 5239 5254 5357 5367 5411 5416 5463 5504 5659 5825 6104 6165 6178 6194 6196 6291 6299 6308 6309 6315 6329 6366 6376 6504 6537 6540 6595 6625 6627 6653 6760 6774 6954 7083 7120 7303 7417 7440 7514 7630 7637 7648 7742 7753 7759 7771 7788 7795 7838 7874 7876 7877 7881 7885 7887 7896 7899 7901 7906 7973 7974 7980 8004 8005 8008 8018 8035 8047 8049 8085 8111 8131 8174 8190 8217 8238 8282 8322 8325 8365 8370 8530 8543 8559 8564 8640 8704 8743 8822 8824 8830 8853 8854 9114 9117 9155 9156 9157 9158 9159 9236 9240 9310 9312 9492 9518 9526 9564 9571 9622 9675 9676 9677 9678 9679 9680 9681 9682 9683 9685 9686 9687 9689 9729 9737 9798 9800 9887 9905 9906 9984 9991 9994 10037 10049 10050 10051 10052 10053 10081 10083 10091 10094 10100 10111 10129 10148 10182 10197 10305 10313 10320 10323 10324 10339 10346 10518 10523 10688 10697 10706 11109 11139 11184 11302 11622 11623 11630 11722 11723 12010 12152 12162 12163 12212 12213 12302 12305 13079 13080 13081 13082 13083 13084 13283 13839 13902 13904 13907 14096 14132 14419 14435 14573 14575 14577 14581 14582 14598 14801 14942 14951 15458 15459 15460 15504 15602 15603 15886 21655

Tried problems：24 problems

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Authored problems：0 problem

None

Virtual Participations：8 contests

Name	Start time
International Olympiad in Informatics 2025 Day 2 (IOI 2025 Day 2)	2025-08-21 09:00:28
International Olympiad in Informatics 2025 Day 1 (IOI 2025 Day 1)	2025-08-19 11:00:57
IOI 2025 中国国家队选拔第二试 (CTS 2025 Day 2)	2025-01-28 08:47:21
International Olympiad in Informatics 2024 Day 1	2024-09-08 14:00:19
International Olympiad in Informatics 2024 Day 2	2024-09-08 08:01:41
(China) National Olympiad in Informatics 2024 Day 2	2024-07-25 07:59:59
(China) National Olympiad in Informatics 2024 Day 1	2024-07-24 07:29:59
Sample Contest	2022-03-23 20:02:04