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ナンバー 問題名 レベル AI推定難易度 タグ 作問者 Solved Fav
2046 Ans Mod? Mod Ans! 1750 箱星 91 7
2045 Two Reflections 1850 箱星 61 9
2044 Infinite Nim 1200 箱星 139 10
2043 Ohuton and Makura 800 箱星 154 1
2042 RGB Caps 1000 箱星 134 21
2041 E-mail Address 115 箱星 293 0
2040 010-1 Deletion 2300 milkcoffee 38 5
2039 Copy and Avoid 1675 milkcoffee 80 8
2038 Strange Arrange 1500 milkcoffee 100 10
2037 NAND Pyramid 1600 milkcoffee 98 20
2036 Max Middle 1100 milkcoffee 147 31
2035 Tunnel 1050 milkcoffee 135 13
2034 Anti Lexicography 147 milkcoffee 236 4
2033 Chromatic Duel 2050 Shirotsume 35 0
2032 Let's Write Multiples!! 2050 Shirotsume 33 12
2031 Colored Brackets 1325 Shirotsume 111 4
2030 Googol Strings 1050 Shirotsume 108 3
2029 Swap Min Max Min 1700 Shirotsume 74 4
2028 Even Choice 1625 Shirotsume 130 9
2027 (1, 2, 3, …, N) 's Subset Sum 700 Shirotsume 191 4
2026 Yet Another Knapsack Problem 2425 suisen 21 2
2025 Select $k$-th Submultiset 2000 hahho 34 1
2024 Xer 1800 milkcoffee 99 24
2023 Tiling is Fun 1625 箱星 130 20
2022 Antilogarithm 140 harurun 185 0
2021 Not A but B 650 milkcoffee 185 3
2020 Sum of Common Prefix Length 1900 souta-1326 34 3
2019 Digits Filling for All Substrings 1300 Shirotsume 76 1
2018 X-Y-X 1700 milkcoffee 74 19
2017 Mod7 Parade 1275 souta-1326 87 3
2016 Countdown Divisors 1075 milkcoffee 145 13
2015 Stair Counter 1050 Shirotsume 155 8
2014 Eggs Hatching 73 tohohogisu 319 3
2013 Can we meet? 2625 Kiri8128 18 0
2012 Largest Triangle 2150 Kiri8128 36 2
2011 Arbitrary Mod (Hidden) 1625 Kiri8128 60 18
2010 Magical Floor 2000 Kiri8128 22 2
2009 Drunkers' Contest 1850 Kiri8128 42 8
2008 Super Worker 1200 Kiri8128 156 12
2007 Arbitrary Mod (Easy) 235 Kiri8128 305 0
2006 Decrease All to Zero 2700 to-omer 6 3
2005 Sum of Power Sums 2500 to-omer 19 3
2004 Incremental Coins 2625 to-omer 14 9
2003 Frog on Grid 2100 to-omer 25 2
2002 Range Swap Query 1850 to-omer 50 4
2001 Distanced Triple 1500 to-omer 50 3
2000 Distanced Characters 775 to-omer 108 3
1999 Lattice Teleportation 2000 MasKoaTS 23 2
1998 Manhattan Restaurant 2150 MasKoaTS 33 3
1997 X Lighting 1600 MasKoaTS 67 1
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