Problem list

Problem search

Point range
Go Random

Hot problems

ID Problem Category Points % AC # AC ▾
insul Cách nhiệt OI Style 0.09 44.2% 1048
fcb007_panda Beginner Free Contest 7 - PANDA Free Contest 0.10 60.0% 1041
fct017_dsum Free Contest Testing Round 17 - DSUM Free Contest 0.06 82.5% 1039
kagain Chiến trường Ô qua ICPC 0.10 44.5% 1033
vnoicup24_r1_b Exchange Gems VNOI Cup 0.10 18.6% 1026
hp_thpt_23_d HSG THPT Hải Phòng 2023 - Bài 4 HSG Tỉnh/Thành phố 0.01 23.4% 1014
fcb009_tinhtong Beginner Free Contest 9 - TINHTONG Free Contest 0.10 61.9% 1010
fct014_minrect Free Contest Testing Round 14 - MINRECT Free Contest 0.13 79.3% 1005
vnoicup23_r2_a Boccher Hide-and-Seek VNOI Cup 0.20 49.9% 1003
maxarr1 Help Conan 12! OI Style 0.07 39.4% 1002
bedao_r06_exams Bedao Regular Contest 06 - EXAMS Bedao Contest 0.20 27.1% 1002
fcb001_ksum Beginner Free Contest 1 - KSUM Free Contest 0.18 42.9% 1001
car Lập lịch sửa chữa ô tô ICPC 0.10 32.0% 1000
c11cave Hang động OI Style 0.25 51.0% 997
fcb017_cgame Beginner Free Contest 17 - CGAME Free Contest 0.10 80.4% 993
fcb045_trungthu Beginner Free Contest 45 - TRUNGTHU Free Contest 0.20 59.5% 990
hp_thpt_22_b HSG THPT Hải Phòng 2022 - Bài 2 HSG Tỉnh/Thành phố 0.01 28.9% 989
c11pairs Đếm cặp OI Style 0.33 30.9% 986
vnoicup24_r2_a Hero World VNOI Cup 0.10 20.3% 985
bedao_m11_sqrcut Bedao Mini Contest 11 - SQRCUT Bedao Contest 0.10 50.5% 980
dtdoi Đổi tiền ICPC 0.16 20.8% 977
votree VO 15 Bài 1 - Cây VNOI Online 0.57 41.5% 971
fct007_buying Free Contest Testing Round 7 - BUYING Free Contest 0.50 92.1% 969
vnoj_round_01_a VNOJ Round 01 - THREE VNOJ Round 0.01 30.8% 967
fcb001_height Beginner Free Contest 1 - HEIGHT Free Contest 0.28 26.9% 966
bedao_r16_a Bedao Regular Contest 16 - Present Continuous Bedao Contest 0.10 59.6% 963
th_thpt_20_d HSG THPT Thanh Hóa 2020 - Từ vựng HSG Tỉnh/Thành phố 0.10 31.9% 961
kmin KMIN OI Style 0.11 31.6% 960
fc142_knight Free Contest 142 - KNIGHT Free Contest 0.70 53.2% 951
segtree_itladder Educational Segment Tree Contest - ITLADDER Educational 0.50 22.9% 947
qbheap Hàng đợi có độ ưu tiên ICPC 0.10 19.4% 945
mtwalk Mountain Walking ICPC 0.16 29.9% 944
fc128_vsum Free Contest 128 - VSUM Free Contest 0.12 37.2% 943
fct013_function Free Contest Testing Round 13 - FUNCTION Free Contest 0.09 54.4% 943
vnoicup22_r1_a Permeowtation 3 VNOI Cup 0.20 42.5% 941
qhroad Phá đường OI Style 0.32 44.7% 935
fc071_soccer Free Contest 71 - SOCCER Free Contest 0.50 73.6% 933
nkracing Vòng đua F1 OI Style 0.16 54.9% 930
qbgame Trò chơi trên ma trận OI Style 0.22 26.0% 930
nkseq Dãy số OI Style 0.10 28.0% 915
fct031_posiprod Free Contest Testing Round 31 - POSIPROD Free Contest 0.70 50.4% 913
kplank Bán dừa OI Style 0.21 25.3% 911
mmass Mass of Molecule ICPC 0.16 64.2% 909
c11bc2 Robin OI Style 0.24 45.9% 908
fcb002_demso Beginner Free Contest 2 - DEMSO Free Contest 0.07 20.3% 908
vdanger Nguy hiểm rõ ràng trước mắt OI Style 0.12 39.9% 904
chain2 Chuỗi từ OI Style 0.27 54.5% 903
bedao_r08_books Bedao Regular Contest 08 - BOOKS Bedao Contest 0.15 36.0% 900
bedao_m16_candy Bedao Mini Contest 16 - CANDY Bedao Contest 0.05 48.2% 899
fcb047_five Beginner Free Contest 47 - FIVE Free Contest 0.20 75.8% 898