Home
PRoblems
Submissions
Users
>
Organizations
Contests
Tag
About
>
FAQ
Custom checker
Judges
Devlog
Github
Tickets
Wiki
Thư viện đề thi
Log in
or
Sign up
This site works best with JavaScript enabled.
Problem list
List
«
1
2
3
4
5
6
7
8
9
...
69
70
»
Problem search
Has editorial
Show problem types
Category
All
---
Asia-Pacific Informatics Olympiad
Atcoder
Bedao Contest
Chưa phân loại
COCI
Duyên Hải Bắc Bộ
Dytechlab
Educational
Educational Codeforces
Free Contest
GSPVH
HNOI
HSG Quốc gia
ICPC
International Olympiad in Informatics
Japan OI
OI Style
Olympic 30/4
Olympic chuyên KHTN
Olympic Sinh Viên
Tin học trẻ
TST Training
USACO
Viettel Programming Challenge
VNOI Cup
VNOI Marathon
VNOI Online
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
Free Contest Testing Round 27.5 - LCM
Lại đồ thị
D-query
A cộng B
Atcoder Educational DP Contest D - Knapsack 1
Mất điện
ID
Problem ▾
Category
Points
% AC
# AC
bedao_r08_books
Bedao Regular Contest 08 - BOOKS
Bedao Contest
0.15
33.8%
650
bedao_r08_farray
Bedao Regular Contest 08 - FARRAY
Bedao Contest
0.60
8.3%
22
bedao_r08_funfair
Bedao Regular Contest 08 - FUNFAIR
Bedao Contest
0.40
7.7%
220
bedao_r08_kingdom
Bedao Regular Contest 08 - KINGDOM
Bedao Contest
0.50
24.3%
232
bedao_r08_negiko
Bedao Regular Contest 08 - NEGIKO
Bedao Contest
0.30
15.1%
269
bedao_r08_triplet
Bedao Regular Contest 08 - TRIPLET
Bedao Contest
0.20
28.0%
398
bedao_r09_devil
Bedao Regular Contest 09 - DEVIL
Bedao Contest
0.30
7.7%
131
bedao_r09_distinct
Bedao Regular Contest 09 - DISTINCT
Bedao Contest
1.50
11.4%
6
bedao_r09_mnumber
Bedao Regular Contest 09 - MNUMBER
Bedao Contest
0.10
16.7%
567
bedao_r09_riddle
Bedao Regular Contest 09 - RIDDLE
Bedao Contest
0.20
28.6%
357
bedao_r09_sausage
Bedao Regular Contest 09 - SAUSAGE
Bedao Contest
0.40
17.4%
130
bedao_r09_treetravel
Bedao Regular Contest 09 - TREETRAVEL
Bedao Contest
1.30
26.4%
161
bedao_r10_admissions
Bedao Regular Contest 10 - ADMISSIONS
Bedao Contest
0.15
24.0%
358
bedao_r10_battleship
Bedao Regular Contest 10 - BATTLESHIP
Bedao Contest
0.30
13.5%
55
bedao_r10_dogs
Bedao Regular Contest 10 - DOGS
Bedao Contest
0.60
10.0%
38
bedao_r10_hard2
Bedao Regular Contest 10 - HARD2
Bedao Contest
0.70
5.7%
13
bedao_r10_qperm
Bedao Regular Contest 10 - QPERM
Bedao Contest
0.50
26.2%
54
bedao_r10_volunteers
Bedao Regular Contest 10 - VOLUNTEERS
Bedao Contest
0.20
20.6%
347
bedao_r11_abstring
Bedao Regular Contest 11 - ABSTRING
Bedao Contest
0.10
20.1%
225
bedao_r11_candy
Bedao Regular Contest 11 - CANDY
Bedao Contest
1.20
7.1%
7
bedao_r11_evensum
Bedao Regular Contest 11 - EVENSUM
Bedao Contest
0.50
19.4%
149
bedao_r11_fish
Bedao Regular Contest 11 - FISH
Bedao Contest
0.70
8.1%
29
bedao_r11_h2o
Bedao Regular Contest 11 - H2O
Bedao Contest
0.25
26.0%
288
bedao_r11_superqry
Bedao Regular Contest 11 - SUPERQRY
Bedao Contest
1.00
42.1%
47
bedao_r12_3m0j1
Bedao Regular Contest 12 - 3M0J1
Bedao Contest
0.40
17.4%
123
bedao_r12_bfriday
Bedao Regular Contest 12 - BFRIDAY
Bedao Contest
0.55
14.7%
57
bedao_r12_fa
Bedao Regular Contest 12 - FA
Bedao Contest
0.90
4.9%
4
bedao_r12_gen
Bedao Regular Contest 12 - GEN
Bedao Contest
0.30
17.6%
338
bedao_r12_papalind
Bedao Regular Contest 12 - PAPALIND
Bedao Contest
0.75
5.3%
21
bedao_r12_xorperm
Bedao Regular Contest 12 - XORPERM
Bedao Contest
0.60
14.6%
7
bedao_r13_2048
Bedao Regular Contest 13 - 2048
Bedao Contest
0.50
11.9%
92
bedao_r13_coprime
Bedao Regular Contest 13 - COPRIME
Bedao Contest
0.75
33.0%
27
bedao_r13_delchar
Bedao Regular Contest 13 - DELCHAR
Bedao Contest
0.20
27.9%
400
bedao_r13_eval
Bedao Regular Contest 13 - EVAL
Bedao Contest
0.70
22.7%
25
bedao_r13_gcd
Bedao Regular Contest 13 - GCD
Bedao Contest
0.30
10.2%
223
bedao_r13_xorqry
Bedao Regular Contest 13 - XORQRY
Bedao Contest
0.40
24.1%
133
bedao_r14_bracket
Bedao Regular Contest 14 - BRACKET
Bedao Contest
0.60
13.2%
30
bedao_r14_ksum
Bedao Regular Contest 14 - KSUM
Bedao Contest
0.90
41.9%
36
bedao_r14_minxor
Bedao Regular Contest 14 - MINXOR
Bedao Contest
1.00
6.5%
16
bedao_r14_seq
Bedao Regular Contest 14 - SEQ
Bedao Contest
0.30
28.6%
238
bedao_r14_sumxor
Bedao Regular Contest 14 - SUMXOR
Bedao Contest
0.20
26.4%
285
bedao_r14_virus
Bedao Regular Contest 14 - VIRUS
Bedao Contest
0.50
24.0%
37
bedao_r15_bittest
Bedao Regular Contest 15 - BITTEST
Bedao Contest
0.60
15.3%
91
bedao_r15_lovely
Bedao Regular Contest 15 - LOVELYPAIR
Bedao Contest
0.70
15.4%
39
bedao_r15_square
Bedao Regular Contest 15 - SQUARE
Bedao Contest
0.20
59.6%
625
bedao_r15_sqlcm
Bedao Regular Contest 15 - SQUARELCM
Bedao Contest
0.40
29.7%
153
bedao_r15_symmetry
Bedao Regular Contest 15 - SYMMETRY
Bedao Contest
0.30
16.8%
270
bedao_r15_ucount
Bedao Regular Contest 15 - UCOUNT
Bedao Contest
0.90
26.4%
23
bedao_r16_d
Bedao Regular Contest 16 - DOMINO
Bedao Contest
0.50
13.2%
151
bedao_r16_f
Bedao Regular Contest 16 - FINDSEQ
Bedao Contest
1.50
6.7%
16
«
1
2
3
4
5
6
7
8
9
...
69
70
»