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Problem Category Points AC % Users
CB003 CƠ BẢN 10 83.7% 62
CB004 CƠ BẢN 10 26.5% 36
CB005 CƠ BẢN 10 19.5% 7
CB006 CƠ BẢN 100 67.3% 88
CB007 CƠ BẢN 20 38.7% 27
CB008 CƠ BẢN 24 81.4% 77
CB009 CƠ BẢN 25 48.4% 15
CB010 CƠ BẢN 10 60.9% 13
CB011 CƠ BẢN 6 64.1% 31
CBARN2 QHD 10 42.9% 2
CCOLOR Practice 21 50.0% 1
CEDGEDES Practice 100 26.0% 10
CENCITY DFS 20 30.3% 16
CENCY DFS 20 56.4% 21
CENTROID QHD trên cây 100 32.5% 17
CEZAR DFS 20 39.5% 15
CGCD1 SOHOC 100 32.4% 21
CGIFTS CƠ BẢN 100 44.4% 90
CGO CTDL 25 52.6% 26
CHANGE Practice 100 47.0% 64
CHANGESEQ Practice 10 71.1% 25
CHANGESUM Practice 50 27.3% 17
CHAR CƠ BẢN 100 60.5% 85
CHARM QHD 100 23.7% 50
CHASE CTDL 100 7.4% 8
CHASE1 QHD trên cây 11 0.0% 0
CHATCAY Practice 100 29.6% 35
CHECKIN CNP 100 22.6% 50
CHECKPOINT Practice 100 23.2% 31
CHECKTRI Practice 100 31.8% 44
CHEM Practice 20 0.0% 0
CHIACAY Practice 20 14.6% 16
CHIADAT Practice 100 54.2% 31
CHIADAY Trie 100 9.8% 4
CHIADAY4 Practice 100 14.5% 26
CHIAKEO Practice 100 61.0% 96
CHIAKEO1 QHD 10 61.1% 26
CHIAQUA Practice 100 65.6% 38
CHIDAN DFS 100 9.1% 2
CHKSHOP sort 100 51.0% 121
CHOCOLATES Practice 40 9.1% 8
CHONDAY QHD 10 34.5% 28
CHOOSE Practice 100 23.4% 57
CHOOSE2 Practice 100 26.9% 59
CHOOSE3 Practice 20 38.0% 34
CHTREE Practice 15 25.6% 20
CINSEQK QHD 20 68.9% 28
CIRCLE sort 100 39.9% 53
CITY HÌNH HỌC 100 23.2% 9
CLIMBING Practice 24 33.8% 18