Ad-Hoc

# ID Name Difficulty Solver
1 abc332_a A. Online Shopping -1099 11821
2 abc285_a A. Edge Checker 2 -1022 12348
3 abc343_a A. Wrong Answer -960 15090
4 abc160_b B. Golden Coins -811 20273
5 abc238_a A. Exponential or Quadratic -689 13660
6 arc131_a A. Two Lucky Numbers -529 4263
7 abc154_c C. Distinct or Not -333 15536
8 codefestival_2015_qualB_a A. Double String -314 2319
9 abc062_a A. Grouping -257 9303
10 abc232_b B. Caesar Cipher -234 9328
11 agc030_a A. Poisonous Cookies -197 5940
12 abc337_b B. Extended ABC -165 12230
13 arc131_b B. Grid Repainting 4 -158 3522
14 arc144_a A. Digit Sum of 2x -136 4650
15 abc330_b B. Minimize Abs 1 -88 10229
16 arc109_a A. Hands -86 6264
17 abc139_b B. Power Socket -71 20904
18 arc130_a A. Remove One Character -68 3720
19 agc054_a A. Remove Substrings -62 3077
20 abc153_d D. Caracal vs Monster -52 15658
21 arc143_a A. Three Integers -42 4182
22 arc167_a A. Toasts for Breakfast Party 3 3732
23 abc285_c C. abc285_brutmhyhiizp 25 9207
24 arc146_a A. Three Cards 32 4513
25 abc244_d D. Swap Hats 47 8711
26 abc152_c C. Low Elements 59 14717
27 arc168_a A. <Inversion> 64 2964
28 arc123_a A. Arithmetic Sequence 73 5020
29 abc148_d D. Brick Break 85 12914
30 m_solutions2020_c C. Marks 131 7924
31 codefestival_2015_qualA_b B. とても長い数列 171 2400
32 tenka1_2017_b B. Different Distribution 188 3793
33 abc329_d D. Election Quick Report 232 8751
34 agc041_a A. Table Tennis Training 245 6991
35 abc189_b B. Alcoholic 249 14815
36 abc115_c C. Christmas Eve 273 11547
37 keyence2021_b B. Mex Boxes 295 4787
38 arc094_a C. Same Integers 301 10573
39 code_formula_2014_qualA_b B. ボウリングゲーム 308 1758
40 abc214_c C. Distribution 309 10282
41 abc108_b B. Ruined Square 310 10166
42 abc336_c C. Even Digits 339 8549
43 abc128_b B. Guidebook 347 15069
44 abc223_c C. Doukasen 351 8426
45 arc105_b B. MAX-=min 365 5899
46 abc221_c C. Select Mul 378 9728
47 arc089_a C. Traveling 397 32912
48 abc198_c C. Compass Walking 413 10826
49 abc175_c C. Walking Takahashi 417 12904
50 abc303_c C. Dash 417 7963
51 abc106_c C. To Infinity 441 10262
52 arc125_a A. Dial Up 442 3553
53 agc040_a A. >< 443 7144
54 abc335_c C. Loong Tracking 452 8160
55 abc073_c C. Write and Erase 454 11028
56 abc345_c C. One Time Swap 469 8374
57 agc012_a A. AtCoder Group Contest 474 7720
58 abc088_c C. Takahashi's Information 477 11099
59 tenka1_2015_qualA_a A. 展開図プログラマーコンテスト 488 1953
60 agc019_a A. Ice Tea Store 509 6718
61 arc073_a C. Sentou 512 9937
62 arc091_a C. Flip,Flip, and Flip...... 514 9392
63 agc039_a A. Connection and Disconnection 517 5475
64 arc109_b B. log 524 5840
65 abc039_c C. ピアニスト高橋君 524 4924
66 abc254_c C. K Swap 536 9010
67 arc077_a C. pushpush 552 9661
68 abc064_c C. Colorful Leaderboard 559 9931
69 arc069_a C. Scc Puzzle 561 9558
70 arc095_a C. Many Medians 566 9436
71 abc230_c C. X drawing 566 7200
72 arc093_a C. Traveling Plan 577 8887
73 arc080_a C. 4-adjacent 578 9561
74 arc099_a C. Minimization 579 11423
75 abc165_d D. Floor Function 600 12049
76 abc117_c C. Streamline 612 9978
77 keyence2020_c C. Subarray Sum 625 5889
78 abc123_c C. Five Transportations 643 10303
79 abc187_d D. Choose Me 650 9921
80 arc082_b D. Derangement 656 8125
81 agc034_a A. Kenken Race 662 5483
82 abc004_3 C. 入れ替え 685 6256
83 abc166_d D. I hate Factorization 694 12398
84 panasonic2020_c C. Sqrt Inequality 701 9277
85 abc182_d D. Wandering 701 8638
86 arc115_c C. ℕ Coloring 706 3794
87 abc047_b B. Snuke's Coloring 2 (ABC Edit) 726 9769
88 arc070_a C. Go Home 731 8884
89 arc068_a C. X: Yet Another Die Game 745 8434
90 abc180_d D. Takahashi Unevolved 752 8468
91 arc063_a C. 1D Reversi 755 8763
92 abc033_c C. 数式の書き換え 755 4919
93 abc184_c C. Super Ryuma 782 8413
94 agc007_a A. Shik and Stone 792 5114
95 abc287_d D. Match or Not 796 5824
96 abc061_c C. Big Array 808 8691
97 arc127_a A. Leading 1s 808 2638
98 arc006_2 B. あみだくじ 814 2511
99 abc245_d D. Polynomial division 815 6647
100 arc009_2 B. おとぎの国の高橋君 830 2501
101 abc125_d D. Flipping Signs 833 9877
102 cf_2015_morning_easy_c C. ヘイホー君と最終試験 841 1721
103 abc076_c C. Dubious Document 2 846 8943
104 arc043_a A. 点数変換 850 2795
105 arc080_b D. Grid Coloring 852 7222
106 abc048_b B. Between a and b ... 861 11574
107 abc127_d D. Integer Cards 887 9793
108 abc084_c C. Special Trains 908 6903
109 arc011_2 B. ルイス・キャロルの記憶術 917 2354
110 abc238_d D. AND and SUM 921 6465
111 abc134_d D. Preparing Boxes 926 8151
112 abc133_d D. Rain Flows into Dams 938 8562
113 arc128_b B. Balls of Three Colors 941 2910
114 abc342_d D. Square Pair 944 5960
115 arc066_a C. Lining Up 952 7714
116 abc051_c C. Back and Forth 968 8289
117 abc233_e E. Σ[k=0..10^100]floor(X/10^k) 969 5237
118 abc249_d D. Index Trio 983 5860
119 arc053_b B. 回文分割 984 2471
120 arc005_2 B. P-CASカードと高橋君 998 2323
121 arc020_2 B. 縞模様 1008 2227
122 arc051_b B. 互除法 1032 2344
123 abc160_e E. Red and Green Apples 1036 8769
124 arc041_b B. アメーバ 1044 2195
125 apc001_b B. Two Arrays 1049 3857
126 abc178_e E. Dist Max 1054 7257
127 abc166_e E. This Message Will Self-Destruct in 5s 1062 8430
128 abc191_c C. Digital Graffiti 1063 7007
129 abc140_d D. Face Produces Unhappiness 1074 7119
130 arc068_b D. Card Eater 1084 6401
131 arc017_2 B. 解像度が低い。 1085 2368
132 arc100_a C. Linear Approximation 1089 8613
133 agc034_b B. ABC 1101 4531
134 arc010_2 B. 超大型連休 1107 1825
135 arc023_2 B. 謎の人物X 1111 2161
136 arc036_b B. 山のデータ 1112 2044
137 arc040_b B. 直線塗り 1113 2100
138 arc004_2 B. 2点間距離の最大と最小 ( Maximum and Minimum ) 1118 2887
139 abc305_e E. Art Gallery on Graph 1158 4319
140 arc121_b B. RGB Matching 1159 2897
141 arc058_a C. Iroha's Obsession 1174 11852
142 agc048_a A. atcoder < S 1187 2571
143 abc001_3 C. 風力観測 1189 5606
144 indeednow_2015_quala_3 C. 説明会 1200 1667
145 code_festival_2017_quala_c C. Palindromic Matrix 1203 3463
146 abc176_e E. Bomber 1204 6381
147 arc019_2 B. こだわりの名前 1209 2028
148 arc074_a C. Chocolate Bar 1223 5928
149 diverta2019_2_c C. Successive Subtraction 1226 3330
150 agc014_b B. Unplanned Queries 1236 3676
151 agc024_b B. Backfront 1259 3842
152 arc014_3 C. 魂の還る場所 1266 1959
153 agc024_c C. Sequence Growing Easy 1279 3260
154 abc308_f F. Vouchers 1284 3741
155 arc172_b B. AtCoder Language 1284 1560
156 arc024_2 B. 赤と黒の木 1293 1712
157 code_festival_qualB_c C. 錬金術士 1298 1314
158 abc114_d D. 756 1337 4760
159 arc069_b D. Menagerie 1344 4692
160 arc062_a C. AtCoDeer and Election Report 1346 6210
161 abc169_e E. Count Median 1353 5460
162 digitalarts_2 B. Password 1373 1086
163 agc023_b B. Find Symmetries 1434 2535
164 arc093_b D. Grid Components 1445 3884
165 abc175_d D. Moving Piece 1491 4564
166 arc096_b D. Static Sushi 1526 3699
167 sumitb2019_f F. Interval Running 1526 2281
168 agc003_c C. BBuBBBlesort! 1541 3424
169 arc079_b D. Decrease (Contestant ver.) 1545 3611
170 arc086_b D. Non-decreasing 1567 3741
171 abc282_e E. Choose Two and Eat One 1604 3044
172 abc173_e E. Multiplication 4 1607 3926
173 agc038_b B. Sorting a Segment 1615 2079
174 ddcc2020_qual_d D. Digit Sum Replace 1617 2427
175 abc165_e E. Rotation Matching 1620 3487
176 agc016_b B. Colorful Hats 1626 2603
177 agc017_b B. Moderate Differences 1627 2567
178 arc071_b D. ### 1641 3842
179 abc227_d D. Project Planning 1643 3696
180 agc022_b B. GCD Sequence 1645 2024
181 arc088_b D. Wide Flip 1646 3789
182 abc196_e E. Filters 1650 2705
183 abc166_f F. Three Variables Game 1668 3322
184 codefestival_2016_final_d D. Pair Cards 1671 1461
185 abc031_d D. 語呂合わせ 1688 1464
186 abc013_3 C. 節制 1692 2444
187 agc026_b B. rng_10s 1720 2000
188 agc040_b B. Two Contests 1722 1610
189 codefestival_2015_qualA_d D. 壊れた電車 1723 1205
190 arc071_c E. TrBBnsformBBtion 1739 2088
191 arc079_c E. Decrease (Judge ver.) 1745 1959
192 agc036_b B. Do Not Duplicate 1771 1519
193 hhkb2020_d D. Squares 1804 1789
194 arc041_c C. ウサギ跳び 1808 861
195 arc128_c C. Max Dot 1810 1341
196 abc280_f F. Pay or Receive 1819 1877
197 arc126_c C. Maximize GCD 1824 1712
198 agc004_b B. Colorful Slimes 1871 2835
199 agc044_b B. Joker 1883 1623
200 abc076_d D. AtCoder Express 1884 2025
201 diverta2019_2_d D. Squirrel Merchant 1884 1464
202 agc010_b B. Boxes 1892 2328
203 arc051_c C. 掛け算 1898 934
204 mujin_pc_2017_a A. Robot Racing 1900 1124
205 code_formula_2014_qualB_d D. お釣りの嫌いな高橋君 1939 435
206 agc043_b B. 123 Triangle 1945 1739
207 agc008_c C. Tetromino Tiling 1953 1859
208 agc050_a A. AtCoder Jumper 1973 1334
209 arc108_d D. AB 1987 1430
210 tenka1_2013_qualA_c C. 天下一二三パズル 1988 321
211 m_solutions2020_f F. Air Safety 2005 1154
212 arc124_d D. Yet Another Sorting Problem 2008 1066
213 agc016_c C. +/- Rectangle 2017 1698
214 agc025_c C. Interval Game 2057 1298
215 agc055_b B. ABC Supremacy 2059 833
216 tenka1_2014_qualB_c C. 天下一王国の歴史 2065 283
217 abc027_d D. ロボット 2088 1097
218 arc127_c C. Binary Strings 2092 893
219 code_formula_2014_final_e E. ab文字列 2092 233
220 tenka1_2015_qualA_b B. stepモード 2115 239
221 agc048_c C. Penguin Skating 2120 843
222 abc156_f F. Modularness 2150 1293
223 mujin_pc_2017_b B. Row to Column 2177 830
224 agc049_c C. Robots 2177 692
225 digitalarts_3 C. Chokutter 2179 282
226 agc041_c C. Domino Quality 2220 1018
227 arc036_d D. 偶数メートル 2227 692
228 agc015_c C. Nuske vs Phantom Thnook 2241 1688
229 caddi2018_c E. Negative Doubling 2327 560
230 arc044_d D. suffix array 2335 256
231 agc030_b B. Tree Burning 2342 895
232 agc004_c C. AND Grid 2367 1925
233 abc147_f F. Sum Difference 2393 1102
234 arc109_d D. L 2394 672
235 arc082_d F. Sandglass 2429 851
236 arc073_c E. Ball Coloring 2434 1187
237 arc095_c E. Symmetric Grid 2441 816
238 arc047_b B. 同一円周上 2455 474
239 agc013_c C. Ants on a Circle 2462 1457
240 arc007_4 D. 破れた宿題 2491 157
241 code_festival_2017_qualb_d D. 101 to 010 2499 606
242 agc019_d D. Shift and Flip 2601 808
243 arc095_d F. Permutation Tree 2626 678
244 arc120_e E. 1D Party 2653 487
245 arc072_c E. Alice in linear land 2655 818
246 codefestival_2016_qualA_d D. Grid and Integers 2684 528
247 arc106_f F. Figures 2755 671
248 arc121_d D. 1 or 2 2784 872
249 arc113_e E. Rvom and Rsrev 2789 340
250 panasonic2020_f F. Fractal Shortest Path 2834 273
251 arc103_d F. Distance Sums 2836 1164
252 agc047_d D. Twin Binary Trees 2910 462
253 agc031_d D. A Sequence of Permutations 2975 573
254 agc003_e E. Sequential operations on Sequence 2983 1124
255 agc026_e E. Synchronized Subsequence 3016 640
256 agc020_d D. Min Max Repetition 3062 697
257 agc006_e E. Rotate 3x3 3101 792
258 arc111_f F. Do you like query problems? 3119 312
259 agc017_c C. Snuke and Spells 3133 820
260 arc021_4 D. だいたい最小全域木 3152 64
261 diverta2019_2_f F. Diverta City 3306 164
262 arc070_d F. HonestOrUnkind 3365 576
263 agc054_d D. (ox) 3426 176
264 arc102_d F. Revenge of BBuBBBlesort! 3464 585
265 agc041_e E. Balancing Network 3502 303
266 agc015_e E. Mr.Aoki Incubator 3571 681
267 typical90_ag 033. Not Too Bright(★2) null 6712
268 past201912_h H. Bulk Selling null 2068
269 joi2013ho1 1. 電飾 (Illumination) null 1459
270 chokudai_S001_f F. 見える数 null 1361
271 joi2008ho_a A. 碁石ならべ null 1252
272 past201912_j J. Leveling null 1165
273 joi2007yo_e E. 品質検査 null 1010
274 typical90_bv 074. ABC String 2(★6) null 1009
275 nikkei2019ex_d D. 辞書順最小の数 null 966
276 joi2017ho_a A. フェーン現象 (Foehn Phenomena) null 899
277 nikkei2019_2_final_a A. Count Triplets null 887
278 chokudai_S002_i I. カツサンドくん β null 881
279 jsc2019_final_a A. Equal Weight null 870
280 soundhound2018_summer_final_a A. Feel the Beat null 867
281 joi2011yo_c C. タイル (Tile) null 861
282 colopl2018_final_a A. ファイティング・タカハシ null 764
283 colopl2018_qual_c C. すぬけそだて――ごはん―― null 761
284 ddcc2019_final_a A. レース (Race) null 720
285 joig2021_c C. イルミネーション 2 (Illumination 2) null 672
286 nikkei2019ex_e F. コラッツ問題 null 638
287 joi2009ho_a A. IOIOI null 630
288 joi2016yo_d D. JOI国のお散歩事情 (Walking in JOI Kingdom) null 610
289 chokudai_S001_l L. N回スワップ null 599
290 utpc2011_2 B. (iwi) null 561
291 nikkei2019_2_final_b B. NIKKEI String null 489
292 cpsco2019_s3_d D. Decode RGB Sequence null 488
293 past202010_l L. マンションの改築 null 476
294 tkppc4_1_d D. スキップ null 452
295 wupc2019_b B. 10 puzzle null 420
296 njpc2017_b B. 格子グラフ null 376
297 joi2009ho_c C. あみだくじ null 373
298 otemae2019_c C. カード並べ 2 (Arranging Card 2) null 372
299 kupc2012pr_1 A. Wikipedia null 369
300 colopl2018_qual_d D. すぬけそだて――トレーニング―― null 342
301 s8pc_4_a A. Atcoder Handles null 341
302 cf_2015_relay_d D. ピザ null 331
303 relay_f F. Trichotomy null 311
304 dwacon2018_final_a A. アナログ時計 null 287
305 code_festival_2018_final_d D. Three Letters null 267
306 iroha2019_day4_b B. 叫び声 null 250
307 dwacon6th_final_a A. 2525敷き詰め null 248
308 code_festival_relay_d D. FU null 230
309 relay2_d D. Shock null 226
310 codefestival_2015_final_e E. ショートコーディング null 201
311 past202104_m M. Equal Queries null 199
312 code_festival_relay_e E. 変な足し算 null 198
313 wupc2019_c C. Permutation City null 185
314 ddcc_2016_final_c C. 01文字列 null 185
315 kupc2017_d D. Sanmoku null 165
316 arc001_4 D. レースゲーム null 157
317 pakencamp_2019_day3_e E. 大きなクリスマスプレゼント null 150
318 donuts_live2014_2 B. 7th null 147
319 kupc2014_c C. 占い null 146
320 kupc2012_7 G. 村 null 140
321 kupc2014_j J. カード null 133
322 cpsco2019_s4_e E. ox Concatenation null 132
323 xmascon19_j J. Sub-Post Correspondence Problem null 128
324 iroha2019_day3_d D. おにごっこ null 127
325 icpc2015summer_day2_b B. 監獄 null 120
326 kupc2012_8 H. 植林 null 107
327 maximum_2013_a A. 特別作戦 null 101
328 tenka1_2016_qualA_d D. グラフィカルグラフ null 89
329 iroha2019_day3_b B. ゐろはちゃん null 64
330 wtf19_d D. Distinct Boxes null 63
331 iroha2019_day3_k K. えそらんぐ null 61
332 arc047_d D. ナナメクエリ null 57
333 joisc2012_rotate rotate. 回転 null 42
334 arc055_d D. 隠された等差数列 null 24
335 dwacon6th_final_d D. Three Safes null 2