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
...
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
Bedao Testing Contest 01 - I WANT
Free Contest 144 - MAGICSUM
D-query
Beginner Free Contest 50 - CAMPING
A cộng B
Beginner Free Contest 50 - GOAL
ID
Problem ▴
Category
Points
% AC
# AC
m00pair
0 0 Pairs
ICPC
0.17
41.9%
82
lqdxeui
2 xe ủi
ICPC
0.45
63.5%
143
coin34
34 đồng xu
ICPC
0.18
38.1%
321
xoinc
A Coin Game
ICPC
0.57
55.7%
48
post
A cộng B
ICPC
0.01
66.6%
5231
post2
A cộng B version 2
ICPC
1.33
32.4%
139
nka1
A1
OI Style
0.76
40.3%
24
acmnb
ACM
OI Style
0.40
39.7%
1103
vnoicup22_final_e
Advanced nickname suggestion system
VNOI Cup
1.20
16.0%
3
atourism
Adventure Tourism
ICPC
1.43
46.2%
6
boss
Ai là sếp
ICPC
0.57
31.5%
55
aladdin
Aladdin
ICPC
0.34
49.6%
103
allow
Allowance
OI Style
0.92
53.5%
16
potato
Ăn khoai
ICPC
0.19
44.4%
104
lis2vn
Another Longest Increasing Subsequence Problem
ICPC
1.20
27.9%
150
mse08g
Another Lucky Numbers
ICPC
0.86
35.3%
5
mtree
Another Tree Problem
ICPC
0.31
40.4%
304
kmp_append
Append
Educational
0.01
22.0%
44
vnoicup22_r3_c
Apple harvesting
VNOI Cup
0.60
9.4%
91
icpc22_regional_a
Aqua
ICPC
1.50
34.4%
32
lem5
ARITHMETIC PROGRESSION
OI Style
0.38
18.7%
105
kl11b
Arnook Defensive Line
ICPC
1.78
20.3%
7
arrays
Arrays
Chưa phân loại
1.50
9.3%
26
ap
Art Plagiarism
ICPC
1.36
6.3%
2
assassin
Assassin Creed
OI Style
1.51
15.5%
16
atcoder_dp_a
Atcoder Educational DP Contest A - Frog 1
Atcoder
0.10
49.3%
3164
atcoder_dp_b
Atcoder Educational DP Contest B - Frog 2
Atcoder
0.20
46.3%
2708
atcoder_dp_c
Atcoder Educational DP Contest C - Vacation
Atcoder
0.25
57.6%
2573
atcoder_dp_d
Atcoder Educational DP Contest D - Knapsack 1
Atcoder
0.30
39.8%
2323
atcoder_dp_e
Atcoder Educational DP Contest E - Knapsack 2
Atcoder
0.30
38.6%
1444
atcoder_dp_f
Atcoder Educational DP Contest F - LCS
Atcoder
0.30
38.3%
1725
atcoder_dp_g
Atcoder Educational DP Contest G - Longest Path
Atcoder
0.20
45.9%
1387
atcoder_dp_h
Atcoder Educational DP Contest H - Grid 1
Atcoder
0.20
58.0%
1599
atcoder_dp_i
Atcoder Educational DP Contest I - Coins
Atcoder
0.30
52.6%
1039
atcoder_dp_j
Atcoder Educational DP Contest J - Sushi
Atcoder
0.50
52.5%
187
atcoder_dp_k
Atcoder Educational DP Contest K - Stones
Atcoder
0.50
50.8%
981
atcoder_dp_l
Atcoder Educational DP Contest L - Deque
Atcoder
0.30
54.8%
735
atcoder_dp_m
Atcoder Educational DP Contest M - Candies
Atcoder
0.40
36.8%
655
atcoder_dp_n
Atcoder Educational DP Contest N - Slimes
Atcoder
0.40
50.9%
724
atcoder_dp_o
Atcoder Educational DP Contest O - Matching
Atcoder
0.30
65.7%
650
atcoder_dp_p
Atcoder Educational DP Contest P - Independent Set
Atcoder
0.30
51.7%
677
atcoder_dp_q
Atcoder Educational DP Contest Q - Flowers
Atcoder
0.20
43.0%
908
atcoder_dp_r
Atcoder Educational DP Contest R - Walk
Atcoder
0.30
60.6%
421
atcoder_dp_s
Atcoder Educational DP Contest S - Digit Sum
Atcoder
0.30
34.4%
646
atcoder_dp_t
Atcoder Educational DP Contest T - Permutation
Atcoder
0.50
71.4%
248
atcoder_dp_u
Atcoder Educational DP Contest U - Grouping
Atcoder
0.35
55.5%
355
atcoder_dp_v
Atcoder Educational DP Contest V - Subtree
Atcoder
0.60
46.0%
165
atcoder_dp_w
Atcoder Educational DP Contest W - Intervals
Atcoder
1.00
47.2%
162
atcoder_dp_x
Atcoder Educational DP Contest X - Tower
Atcoder
1.25
47.9%
284
atcoder_dp_y
Atcoder Educational DP Contest Y - Grid 2
Atcoder
1.45
42.4%
307
«
1
2
3
4
5
6
...
69
70
»