Problemset - Codeforces

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Problems

#	Name
69B	Bets greedy, implementation	1200	x3283
69A	Young Physicist implementation, math	1000	x168065
68E	Contact geometry	2900	x72
68D	Half-decay tree data structures, divide and conquer, dp, math, probabilities	2500	x472
68C	Synchrophasotron brute force	2200	x311
68B	Energy exchange binary search	1600	x4664
68A	Irrational problem implementation, number theory	1100	x4958
67E	Save the City! geometry	2500	x318
67D	Optical Experiment binary search, data structures, dp	1900	x1456
67C	Sequence of Balls dp	2600	x689
67B	Restoration of the Permutation greedy	1800	x778
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2123
66E	Petya and Post data structures, dp	2000	x758
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3187
66C	Petya and File System data structures, implementation	1800	x1078
66B	Petya and Countryside brute force, implementation	1100	x20685
66A	Petya and Java implementation, strings	1300	x6419
65E	Harry Potter and Moving Staircases dfs and similar, implementation	2900	x94
65D	Harry Potter and the Sorting Hat brute force, dfs and similar, hashing	2200	x433
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x789
65B	Harry Potter and the History of Magic brute force, greedy, implementation	1700	x1378
65A	Harry Potter and Three Spells implementation, math	1800	x1824
64I	Sort the Table *special problem, sortings	2400	x89
64H	Table Bowling *special problem, sortings	2300	x114
64G	Path Canonization *special problem	2200	x121
64F	Domain *special problem, expression parsing	2000	x181
64E	Prime Segment *special problem, brute force, math, number theory	1800	x243
64D	Presents *special problem, greedy	1800	x289
64C	Table *special problem, greedy, implementation, math	1600	x339
64B	Expression *special problem, expression parsing	1500	x1019
64A	Factorial *special problem, implementation	1300	x3121
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x766
63D	Dividing Island constructive algorithms	1900	x1269
63C	Bulls and Cows brute force, implementation	1700	x1737
63B	Settlers' Training implementation	1200	x4842
63A	Sinking Ship implementation, sortings, strings	900	x11597
62E	World Evil dp, flows	2700	x232
62D	Wormhouse dfs and similar, graphs	2300	x374
62C	Inquisition geometry, implementation, sortings	2300	x252
62B	Tyndex.Brome binary search, implementation	1800	x1293
62A	A Student's Dream greedy, math	1300	x3461
61E	Enemy is weak data structures, trees	1900	x11338
61D	Eternal Victory dfs and similar, graphs, greedy, shortest paths, trees	1800	x6623
61C	Capture Valerian math	2000	x718
61B	Hard Work strings	1300	x3883
61A	Ultra-Fast Mathematician implementation	800	x112585
60E	Mushroom Gnomes math, matrices	2600	x327
60D	Savior brute force, dsu, math	2500	x452
60C	Mushroom Strife brute force, dfs and similar	2100	x567
60B	Serial Time! dfs and similar, dsu	1400	x4682
60A	Where Are My Flakes? implementation, two pointers	1300	x3659
59E	Shortest Path graphs, shortest paths	2000	x3479
59D	Team Arrangement constructive algorithms, greedy, implementation	2000	x638
59C	Title expression parsing	1600	x2111
59B	Fortune Telling implementation, number theory	1200	x6922
59A	Word implementation, strings	800	x179223
58E	Expression dp	2400	x393
58D	Calendar greedy, strings	2000	x734
58C	Trees brute force	1800	x2042
58B	Coins greedy	1300	x12274
58A	Chat room greedy, strings	1000	x131490
57E	Chess math, shortest paths	3000	x264
57D	Journey dp, math	2500	x342
57C	Array combinatorics, math	1900	x2693
57B	Martian Architecture implementation	1600	x1022
57A	Square Earth? dfs and similar, greedy, implementation	1300	x2917
56E	Domino Principle binary search, data structures, sortings	2200	x2403
56D	Changing a String dp	2100	x1650
56C	Corporation Mail data structures, expression parsing, implementation	1700	x1172
56B	Spoilt Permutation implementation	1300	x3740
56A	Bar implementation	1000	x8724
55E	Very simple problem geometry, two pointers	2500	x707
55D	Beautiful numbers dp, number theory	2500	x3937
55C	Pie or die games	1900	x1656
55B	Smallest number brute force	1600	x2877
55A	Flea travel implementation, math	1200	x3473
54E	Vacuum Сleaner geometry	2700	x194
54D	Writing a Song brute force, dp, strings	2100	x547
54C	First Digit Law dp, math, probabilities	2000	x1327
54B	Cutting Jigsaw Puzzle hashing, implementation	1800	x776
54A	Presents implementation	1300	x2082
53E	Dead Ends bitmasks, dp	2500	x1006
53D	Physical Education sortings	1500	x2046
53C	Little Frog constructive algorithms	1200	x6513
53B	Blog Photo binary search, implementation	1700	x1417
53A	Autocomplete implementation	1100	x5115
52C	Circular RMQ data structures	2200	x9059
52B	Right Triangles combinatorics	1600	x2073
52A	123-sequence implementation	900	x8822
51F	Caterpillar dfs and similar, dp, graphs, trees	2800	x630
51E	Pentagon combinatorics, graphs, matrices	2400	x410
51D	Geometrical problem implementation	2200	x482
51C	Three Base Stations binary search, greedy	1800	x2016
51B	bHTML Tables Analisys expression parsing	1700	x875
51A	Cheaterius's Problem implementation	1300	x1836
50E	Square Equation Roots math	2300	x363
50D	Bombing binary search, dp, probabilities	2100	x635
50C	Happy Farm 5 geometry	2000	x771
50B	Choosing Symbol Pairs strings	1500	x5724
50A	Domino piling greedy, math	800	x251346