Problemset - Codeforces

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Educational Codeforces Round 175 (Rated for Div. 2)
27:54:14
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Problems

#	Name
1242D	Number Discovery math	3400	x205
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1724
1242B	0-1 MST dfs and similar, dsu, graphs, sortings	1900	x7920
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12786
1240F	Football graphs	3100	x273
1239F	Swiper, no swiping! graphs, implementation	3400	x289
1239E	Turtle dp, implementation	3100	x1053
1239D	Catowice City 2-sat, dfs and similar, graph matchings, graphs	2400	x2169
1239C	Queue in the Train data structures, greedy, implementation	2300	x1587
1239B	The World Is Just a Programming Task (Hard Version) implementation	2500	x1068
1239A	Ivan the Fool and the Probability Theory combinatorics, dp, math	1700	x7420
1238G	Adilbek and the Watering System data structures, greedy, sortings	2700	x419
1238F	The Maximum Subtree dfs and similar, dp, graphs, trees	2200	x1923
1238E	Keyboard Purchase bitmasks, dp	2200	x3168
1238D	AB-string binary search, combinatorics, dp, strings	1900	x6134
1238C	Standard Free2play dp, greedy, math	1600	x7553
1238B	Kill `Em All greedy, sortings	1300	x13849
1238A	Prime Subtraction math, number theory	900	x25242
1237H	Balanced Reversals constructive algorithms	3300	x389
1237G	Balanced Distribution data structures, dp, greedy	3500	x129
1237F	Balanced Domino Placements combinatorics, dp	2600	x913
1237E	Balanced Binary Search Trees dp, math	2400	x1370
1237D	Balanced Playlist binary search, data structures, implementation	2000	x4314
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4397
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x6159
1237B	Balanced Tunnel data structures, sortings, two pointers	1300	x17143
1237A	Balanced Rating Changes implementation, math	1000	x20565
1236F	Alice and the Cactus dfs and similar, graphs, math, probabilities	3000	x183
1236E	Alice and the Unfair Game binary search, data structures, dp, dsu	2500	x681
1236D	Alice and the Doll brute force, data structures, greedy, implementation	2300	x1687
1236C	Labs constructive algorithms, greedy, implementation	1300	x10239
1236B	Alice and the List of Presents combinatorics, math	1500	x11348
1236A	Stones brute force, greedy, math	800	x16643
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2755
1234E	Special Permutations math	2000	x2835
1234D	Distinct Characters Queries data structures	1600	x15833
1234C	Pipes dp, implementation	1500	x12822
1234B2	Social Network (hard version) data structures, implementation	1300	x17162
1234B1	Social Network (easy version) implementation	1000	x19004
1234A	Equalize Prices Again math	800	x28257
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x851
1231C	Increasing Matrix greedy	1100	x3931
1230B	Ania and Minimizing greedy, implementation	1000	x18980
1230A	Dawid and Bags of Candies brute force, implementation	800	x21960
1228F	One Node is Gone constructive algorithms, implementation, trees	2500	x451
1228E	Another Filling the Grid combinatorics, dp, math	2300	x2897
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x5259
1228C	Primes and Multiplication math, number theory	1700	x9176
1228B	Filling the Grid implementation, math	1400	x11626
1228A	Distinct Digits brute force, implementation	800	x22101
1227G	Not Same constructive algorithms	2600	x1095
1227F2	Wrong Answer on test 233 (Hard Version) combinatorics, math	2400	x1551
1227F1	Wrong Answer on test 233 (Easy Version) dp	2200	x1856
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1522
1227D2	Optimal Subsequences (Hard Version) data structures, greedy	1800	x4451
1227D1	Optimal Subsequences (Easy Version) data structures, greedy	1600	x6526
1227C	Messy constructive algorithms	1700	x5588
1227B	Box constructive algorithms	1200	x9824
1227A	Math Problem math	1100	x9880
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x596
1225F	Tree Factory constructive algorithms, greedy, trees	2500	x903
1225E	Rock Is Push binary search, dp	2200	x1920
1225D	Power Products hashing, math, number theory	1800	x8402
1225C	p-binary bitmasks, brute force, math	1600	x9157
1225B2	TV Subscriptions (Hard Version) implementation, two pointers	1300	x11282
1225B1	TV Subscriptions (Easy Version) implementation	1000	x12094
1225A	Forgetting Things math	900	x16032
1223G	Wooden Raft binary search, math, number theory	3200	x253
1223F	Stack Exterminable Arrays data structures, divide and conquer, dp, hashing	2600	x2104
1223E	Paint the Tree dp, sortings, trees	2100	x2663
1223D	Sequence Sorting dp, greedy, two pointers	2000	x4135
1223C	Save the Nature binary search, greedy	1600	x8823
1223B	Strings Equalization strings	1000	x15122
1223A	CME math	800	x21769
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x777
1221F	Choose a Square binary search, data structures, sortings	2400	x1101
1221E	Game With String games	2500	x1108
1221D	Make The Fence Great Again dp	1800	x9418
1221C	Perfect Team binary search, math	1200	x22143
1221B	Knights constructive algorithms, greedy	1100	x12199
1221A	2048 Game brute force, greedy, math	1000	x17220
1220G	Geolocation geometry	3400	x60
1220F	Gardener Alex binary search, data structures	2700	x773
1220E	Tourism dfs and similar, dp, dsu, graphs, greedy, trees	2200	x2841
1220D	Alex and Julian bitmasks, math, number theory	1900	x3971
1220C	Substring Game in the Lesson games, greedy, strings	1300	x10410
1220B	Multiplication Table math, number theory	1300	x11761
1220A	Cards implementation, sortings, strings	800	x30660
1219G	Harvester implementation	2000	x685
1219C	Periodic integer number implementation, strings	1700	x1896
1218I	The Light Square 2-sat, dfs and similar, greedy	2100	x618
1218H	Function Composition dfs and similar	2900	x136
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x124
1218F	Workout plan data structures, greedy	1500	x3002
1218E	Product Tuples divide and conquer, fft	2500	x391
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x528
1218C	Jumping Transformers dp	2600	x190
1218B	Guarding warehouses data structures, geometry	3000	x74
1218A	BubbleReactor dp, graphs	2800	x162
1217F	Forced Online Queries Problem data structures, divide and conquer, dsu, graphs, trees	2600	x635