Problem A - Safety First
 
 
 
 
Contest status
 
 
# When Who Problem Lang Verdict Time Memory
294149045 Dec/01/2024 09:51 Ghost participant 北京大学 - 赤橙黄绿蓝紫 - 蒋凌宇, 钱易, 徐安矣 A - Safety First Unknown Accepted 0 ms 0 KB
294149234 Dec/01/2024 09:51 Ghost participant 北京大学 - 呆呆鸟 - 王蔚澄, 王相文, 李羿辰 A - Safety First Unknown Accepted 0 ms 0 KB
294216283 Dec/01/2024 17:28 Ghost participant HoMaMaOvO (Riku Kawasaki, Masaki Nishimoto, Yui Hosaka) A - Safety First Unknown Accepted 0 ms 0 KB
294216517 Dec/01/2024 17:28 Ghost participant Lumina (Yuchong Guo, Yikai Zhu, Jiyu Shen) A - Safety First Unknown Accepted 0 ms 0 KB
294216707 Dec/01/2024 17:28 Ghost participant japan406364961 (Ryo Takahashi, Masanori Ogiwara, Takuto Koriyama) A - Safety First Unknown Accepted 0 ms 0 KB
294216788 Dec/01/2024 17:28 Ghost participant USA1 (Andrew He, Kevin Sun, Gennady Korotkevich) A - Safety First Unknown Accepted 0 ms 0 KB
294216791 Dec/01/2024 17:28 Ghost participant yosupo (Kohei Morita, Takuto Shigemura, Kento Nikaido) A - Safety First Unknown Accepted 0 ms 0 KB
296163348 Dec/12/2024 16:22 至少我們中還有人能快樂 這樣就已足夠了: nmsl, Keli-add, Duck_sajin# A - Safety First C++20 (GCC 13-64) Accepted 5984 ms 15700 KB
346003178 Oct/27/2025 14:07 fjashufi A - Safety First C++17 (GCC 7-32) Accepted 843 ms 31500 KB
387775686 Aug/20/2026 12:38 Xudongning A - Safety First C++23 (GCC 14-64, msys2) Accepted 1953 ms 753000 KB
370940174 Apr/13/2026 14:48 not_clever_syl A - Safety First C++20 (GCC 13-64) Accepted 1531 ms 31500 KB
340864687 Sep/28/2025 11:56 505: openjudgenoi, EternalEpic, liubw_# A - Safety First C++20 (GCC 13-64) Accepted 1280 ms 31500 KB
342502655 Oct/07/2025 22:36 postpone A - Safety First C++23 (GCC 14-64, msys2) Accepted 5952 ms 15700 KB
392307552 Sep/27/2026 11:59 Flapikqq A - Safety First C++23 (GCC 14-64, msys2) Accepted 5875 ms 15800 KB
340585133 Sep/26/2025 11:34 QwQ: MCxiaomengxin# A - Safety First C++20 (GCC 13-64) Accepted 1421 ms 103600 KB
341170732 Sep/30/2025 12:42 Brilliance_Z A - Safety First C++23 (GCC 14-64, msys2) Accepted 2031 ms 34800 KB
348736895 Nov/13/2025 14:02 L3067545513 A - Safety First C++20 (GCC 13-64) Accepted 1765 ms 63100 KB
342501973 Oct/07/2025 22:29 postpone A - Safety First C++20 (GCC 13-64) Accepted 5921 ms 15700 KB
364169838 Feb/24/2026 11:50 Hanavie A - Safety First C++17 (GCC 7-32) Accepted 3859 ms 16400 KB
300649353 Jan/12/2025 17:20 GGapa A - Safety First C++23 (GCC 14-64, msys2) Accepted 1890 ms 47200 KB
333771970 Aug/13/2025 12:09 Hatsune_Miku-Nahida-Furina_De_Fountain: coord_axis, Anoth3r, FZANOTFOUND# A - Safety First C++23 (GCC 14-64, msys2) Accepted 1546 ms 31500 KB
341036442 Sep/29/2025 12:53 mod998244353 A - Safety First C++20 (GCC 13-64) Accepted 1828 ms 17200 KB
315857650 Apr/16/2025 19:05 Rhyme3 A - Safety First C++23 (GCC 14-64, msys2) Accepted 1765 ms 63000 KB
371090306 Apr/14/2026 10:02 Hongruizhao A - Safety First C++20 (GCC 13-64) Accepted 1062 ms 63000 KB
386693408 Aug/12/2026 06:38 mzdsxgl A - Safety First C++23 (GCC 14-64, msys2) Accepted 2296 ms 31400 KB
346015477 Oct/27/2025 15:39 Liveddd A - Safety First C++20 (GCC 13-64) Accepted 1125 ms 31700 KB
338207178 Sep/12/2025 15:26 Zephyr_Whimsy A - Safety First C++23 (GCC 14-64, msys2) Accepted 3061 ms 708100 KB
344488793 Oct/18/2025 14:53 CCCCOrz A - Safety First C++17 (GCC 7-32) Accepted 1515 ms 17600 KB
340317521 Sep/25/2025 11:15 SDU Tai Mountain ACM Group: _unreachable_, linyihdfj, Qg5# A - Safety First C++17 (GCC 7-32) Accepted 1468 ms 31700 KB
346409952 Oct/29/2025 07:45 Kita3 A - Safety First C++23 (GCC 14-64, msys2) Accepted 1171 ms 31700 KB
312169312 Mar/24/2025 12:31 Cerberus in Falling Locus: Pretharp, Hello_World_114514, Harmonic_qwq# A - Safety First C++23 (GCC 14-64, msys2) Accepted 1514 ms 33300 KB
346411927 Oct/29/2025 08:08 Kita3 A - Safety First C++23 (GCC 14-64, msys2) Accepted 1233 ms 31700 KB
346412717 Oct/29/2025 08:16 Kita3 A - Safety First C++23 (GCC 14-64, msys2) Accepted 1171 ms 31700 KB
365618611 Mar/06/2026 18:41 eigen_meteor A - Safety First C++23 (GCC 14-64, msys2) Accepted 1531 ms 771800 KB
347209267 Nov/03/2025 10:28 Kumikosan A - Safety First C++17 (GCC 7-32) Accepted 2186 ms 33300 KB
307649519 Feb/25/2025 14:30 qiuzx A - Safety First C++20 (GCC 13-64) Accepted 2296 ms 63300 KB
344880354 Oct/20/2025 16:40 OdtreeKing A - Safety First C++17 (GCC 7-32) Accepted 2124 ms 33000 KB
349133427 Nov/15/2025 18:40 jeff_qi A - Safety First C++20 (GCC 13-64) Accepted 3046 ms 29900 KB
370906845 Apr/13/2026 08:16 Zhangyican A - Safety First C++23 (GCC 14-64, msys2) Accepted 890 ms 32200 KB
309329531 Mar/07/2025 13:43 wenqizhi A - Safety First C++20 (GCC 13-64) Accepted 1499 ms 70100 KB
339651662 Sep/21/2025 08:13 kikcer A - Safety First C++20 (GCC 13-64) Accepted 1405 ms 66100 KB
370878841 Apr/13/2026 04:01 Justin666 A - Safety First C++20 (GCC 13-64) Accepted 3843 ms 357800 KB
327717277 Jul/06/2025 14:51 Sung.An A - Safety First C++23 (GCC 14-64, msys2) Accepted 2625 ms 799300 KB
339652829 Sep/21/2025 08:24 kikcer A - Safety First C++20 (GCC 13-64) Accepted 1546 ms 66100 KB
339652129 Sep/21/2025 08:18 kikcer A - Safety First C++20 (GCC 13-64) Accepted 1655 ms 66100 KB
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