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Asia-Pacific Informatics Olympiad
Atcoder
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Educational Codeforces
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International Olympiad in Informatics
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USACO
Viettel Programming Challenge
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VNUOI
VOJ
Problem types
2 con trỏ
2-satisfiability
Ad hoc (không thuộc thể loại nào)
Aho Corasick
Balanced BST (cây nhị phân cân bằng)
Bao lồi
Bitwise
C++ STL (Heap, Set, Map, ..)
Cặp ghép
Cặp ghép có trọng số
Cặp ghép trên đồ thị thường
Cây khung nhỏ nhất
Chia đôi tập
Chu trình Euler
Chưa phân loại
DFS / BFS
Disjoint set (DSU)
Divide & Conquer (Chia để trị)
Duyệt
Fast Fourier Transform (FFT)
Fenwick Tree (Binary Indexed Tree)
Fenwick Tree 2D
Hashing
Heavy Light Decomposition
Hình học
Interactive
Khử Gauss
KMP
Knuth Optimization
LCA
Luồng
Luồng mincost
Lý thuyết trò chơi - Adhoc
Lý thuyết trò chơi - Grundy
Lý thuyết trò chơi - Nim
Manacher
Mảng cộng dồn
Monotonic Queue
Nhân ma trận
Output Only
Quy hoạch động
Quy hoạch động bao lồi
Quy hoạch động bitmask
Quy hoạch động chữ số
Quy hoạch động thứ tự từ điển
Quy hoạch động trên cây
Rời rạc hóa
Segment Tree (Interval Tree)
Số học
String (xâu nói chung)
Suffix Array / Suffix Automaton / Suffix Tree
Sweep line
Tham lam
Tìm kiếm nhị phân (Binary search)
Tổ hợp
Toán - adhoc
Trie
Xử lý số lớn
Z-function
Đồ thị
Đường đi ngắn nhất - Dijkstra
Đường đi ngắn nhất - Floyd
Point range
Go
Random
Hot problems
Free Contest Testing Round 55 - LAMP
A cộng B
Atcoder Educational DP Contest A - Frog 1
Free Contest Testing Round 55 - DELPALIN
Xếp hàng mua vé
Free Contest Testing Round 55 - DICEGAME
ID
Problem ▴
Category
Points
% AC
# AC
bedao_oi1_c
Bedao OI Contest 1 - Bất phương trình tuyến tính
Bedao Contest
0.80
7.8%
24
bedao_oi1_b
Bedao OI Contest 1 - Dãy con chung dài nhất
Bedao Contest
0.60
10.7%
77
bedao_oi1_e
Bedao OI Contest 1 - Dỗi nhau
Bedao Contest
0.80
7.5%
19
bedao_oi1_f
Bedao OI Contest 1 - Nén tối ưu
Bedao Contest
0.00
18.5%
68
bedao_oi1_d
Bedao OI Contest 1 - Sao chép mảng
Bedao Contest
0.70
19.5%
87
bedao_oi1_a
Bedao OI Contest 1 - Đếm cầu
Bedao Contest
0.50
9.2%
72
hello22_permsort
Bedao PERMSORT Hay Không? Hay Hay
Bedao Contest
1.20
25.1%
82
hello22_prom
Bedao PROM Hay Không? Hay Hay
Bedao Contest
0.10
37.2%
597
bedao_r01_exp
Bedao Regular Contest 01 - EXP
Bedao Contest
0.10
4.9%
144
bedao_r01_gcdmax
Bedao Regular Contest 01 - GCDMAX
Bedao Contest
0.20
14.8%
296
bedao_r01_grade
Bedao Regular Contest 01 - GRADE
Bedao Contest
0.40
42.5%
247
bedao_r01_hgraph
Bedao Regular Contest 01 - HGRAPH
Bedao Contest
0.50
21.4%
102
bedao_r01_hogwarts
Bedao Regular Contest 01 - HOGWARTS
Bedao Contest
0.60
28.2%
68
bedao_r01_zstring
Bedao Regular Contest 01 - ZSTRING
Bedao Contest
0.30
11.0%
49
bedao_r02_8rooks
Bedao Regular Contest 02 - 8ROOKS
Bedao Contest
0.50
14.0%
31
bedao_r02_geometry2
Bedao Regular Contest 02 - GEOMETRY2
Bedao Contest
0.30
30.4%
77
bedao_r02_leaves
Bedao Regular Contest 02 - LEAVES
Bedao Contest
0.15
23.0%
168
bedao_r02_pxor
Bedao Regular Contest 02 - PXOR
Bedao Contest
0.60
17.2%
53
bedao_r02_sister
Bedao Regular Contest 02 - SISTER
Bedao Contest
0.20
36.4%
355
bedao_r02_tourist
Bedao Regular Contest 02 - TOURIST
Bedao Contest
0.80
14.8%
79
bedao_r03_3numbers
Bedao Regular Contest 03 - 3 NUMBERS
Bedao Contest
0.20
18.8%
110
bedao_r03_kindness
Bedao Regular Contest 03 - KINDNESS
Bedao Contest
0.10
13.7%
187
bedao_r03_prime
Bedao Regular Contest 03 - PRIME
Bedao Contest
0.40
29.4%
246
bedao_r03_protect
Bedao Regular Contest 03 - PROTECT
Bedao Contest
0.80
24.9%
38
bedao_r03_race
Bedao Regular Contest 03 - RACE
Bedao Contest
0.60
26.6%
36
bedao_r03_wordgame
Bedao Regular Contest 03 - WORDGAME
Bedao Contest
0.15
22.1%
325
bedao_r04_accio
Bedao Regular Contest 04 - ACCIO
Bedao Contest
0.20
18.9%
131
bedao_r04_clown
Bedao Regular Contest 04 - CLOWN AND BALLS
Bedao Contest
0.50
6.8%
12
bedao_r04_loglcm
Bedao Regular Contest 04 - LOG LCM
Bedao Contest
0.60
4.6%
6
bedao_r04_magic
Bedao Regular Contest 04 - MAGIC
Bedao Contest
0.30
18.8%
108
bedao_r04_marble
Bedao Regular Contest 04 - MARBLE
Bedao Contest
0.30
4.4%
43
bedao_r04_simple
Bedao Regular Contest 04 - SIMPLE
Bedao Contest
0.10
54.2%
576
bedao_r05_carray
Bedao Regular Contest 05 - CARRAY
Bedao Contest
0.30
14.4%
131
bedao_r05_ccake
Bedao Regular Contest 05 - CCAKE
Bedao Contest
0.70
11.2%
18
bedao_r05_domrooks
Bedao Regular Contest 05 - DOMROOKS
Bedao Contest
0.40
17.3%
67
bedao_r05_factory
Bedao Regular Contest 05 - FACTORY
Bedao Contest
0.50
13.1%
87
bedao_r05_milo
Bedao Regular Contest 05 - MILO
Bedao Contest
0.10
25.9%
440
bedao_r05_sqrsum
Bedao Regular Contest 05 - SQRSUM
Bedao Contest
1.00
16.1%
2
bedao_r06_exams
Bedao Regular Contest 06 - EXAMS
Bedao Contest
0.20
26.1%
622
bedao_r06_halloween
Bedao Regular Contest 06 - HALLOWEEN
Bedao Contest
0.40
3.8%
9
bedao_r06_icd
Bedao Regular Contest 06 - ICD
Bedao Contest
0.15
52.2%
412
bedao_r06_pmed
Bedao Regular Contest 06 - PMED
Bedao Contest
0.60
3.8%
4
bedao_r06_pyramid2
Bedao Regular Contest 06 - PYRAMID2
Bedao Contest
0.10
16.6%
441
bedao_r06_rewards
Bedao Regular Contest 06 - REWARDS
Bedao Contest
0.50
51.2%
108
bedao_r07_arraygame
Bedao Regular Contest 07 - ARRAYGAME
Bedao Contest
0.85
5.2%
24
bedao_r07_deadline
Bedao Regular Contest 07 - DEADLINE
Bedao Contest
1.00
10.7%
29
bedao_r07_lis
Bedao Regular Contest 07 - LIS
Bedao Contest
0.20
21.1%
451
bedao_r07_mtcat
Bedao Regular Contest 07 - MTCAT
Bedao Contest
0.40
20.7%
250
bedao_r07_number
Bedao Regular Contest 07 - NUMBER
Bedao Contest
0.10
69.7%
1171
bedao_r07_train
Bedao Regular Contest 07 - TRAIN
Bedao Contest
0.50
16.2%
81
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