Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
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constructive algorithms

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Problems

#	Name
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7803
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x16994
1329D	Dreamoon Likes Strings constructive algorithms, data structures	3100	x365
1329C	Drazil Likes Heap constructive algorithms, data structures, greedy, implementation	2400	x1497
1329A	Dreamoon Likes Coloring constructive algorithms, greedy, implementation, math	1800	x8756
1328D	Carousel constructive algorithms, dp, graphs, greedy, math	1800	x12473
1327C	Game with Chips constructive algorithms, implementation	1600	x13025
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29301
1325F	Ehab's Last Theorem constructive algorithms, dfs and similar, graphs, greedy	2500	x1674
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11495
1325C	Ehab and Path-etic MEXs constructive algorithms, dfs and similar, greedy, trees	1500	x12830
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x37911
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x3881
1321C	Remove Adjacent brute force, constructive algorithms, greedy, strings	1600	x9442
1316D	Nash Matrix constructive algorithms, dfs and similar, graphs, implementation	2000	x3148
1316C	Primitive Primes constructive algorithms, math, ternary search	1800	x6961
1316B	String Modification brute force, constructive algorithms, implementation, sortings, strings	1400	x10908
1313B	Different Rules constructive algorithms, greedy, implementation, math	1700	x6405
1312B	Bogosort constructive algorithms, sortings	1000	x24312
1311E	Construct the Binary Tree brute force, constructive algorithms, trees	2200	x2095
1305E	Kuroni and the Score Distribution constructive algorithms, greedy, implementation, math	2200	x2864
1305D	Kuroni and the Celebration constructive algorithms, dfs and similar, interactive, trees	1900	x4698
1305B	Kuroni and Simple Strings constructive algorithms, greedy, strings, two pointers	1200	x11239
1305A	Kuroni and the Gifts brute force, constructive algorithms, greedy, sortings	800	x13719
1304D	Shortest and Longest LIS constructive algorithms, graphs, greedy, two pointers	1800	x6014
1304B	Longest Palindrome brute force, constructive algorithms, greedy, implementation, strings	1100	x17376
1302B	DAG constructive algorithms		x143
1301D	Time to Run constructive algorithms, graphs, implementation	2000	x3749
1296F	Berland Beauty constructive algorithms, dfs and similar, greedy, sortings, trees	2100	x2647
1296E1	String Coloring (easy version) constructive algorithms, dp, graphs, greedy, sortings	1800	x7059
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x326
1292B	Aroma's Search brute force, constructive algorithms, geometry, greedy, implementation	1700	x6004
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	3000	x642
1290B	Irreducible Anagrams binary search, constructive algorithms, data structures, strings, two pointers	1800	x4868
1288F	Red-Blue Graph constructive algorithms, flows	2900	x440
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x230
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2800	x605
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x1252
1286B	Numbers on Tree constructive algorithms, data structures, dfs and similar, graphs, greedy, trees	1800	x4374
1285E	Delete a Segment brute force, constructive algorithms, data structures, dp, graphs, sortings, trees, two pointers	2300	x1649
1283F	DIY Garland constructive algorithms, greedy, trees	2200	x1601
1283C	Friends and Gifts constructive algorithms, data structures, math	1500	x12765
1282E	The Cake Is a Lie constructive algorithms, data structures, dfs and similar, graphs	2400	x950
1282D	Enchanted Artifact constructive algorithms, interactive, strings	2300	x2026
1280F	Intergalactic Sliding Puzzle combinatorics, constructive algorithms, math	3400	x55
1278E	Tests for problem D constructive algorithms, dfs and similar, divide and conquer, trees	2200	x1701
1276E	Four Stones constructive algorithms	3500	x77
1276C	Beautiful Rectangle brute force, combinatorics, constructive algorithms, data structures, greedy, math	2300	x1461
1272B	Snow Walking Robot constructive algorithms, greedy, implementation	1200	x13464
1270I	Xor on Figures constructive algorithms, fft, math	3500	x225
1270G	Subset with Zero Sum constructive algorithms, dfs and similar, graphs, math	2700	x2026
1270E	Divide Points constructive algorithms, geometry, math	2300	x2194
1270D	Strange Device constructive algorithms, interactive, math, sortings	1900	x4357
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13551
1270B	Interesting Subarray constructive algorithms, greedy, math	1200	x15933
1268A	Long Beautiful Integer constructive algorithms, greedy, implementation, strings	1700	x8273
1267L	Lexicography constructive algorithms, strings	1800	x2844
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2600	x725
1267H	Help BerLine constructive algorithms	3200	x100
1267D	DevOps Best Practices constructive algorithms	2800	x205
1267C	Cactus Revenge constructive algorithms	3500	x377
1266D	Decreasing Debts constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers	2000	x3402
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x9340
1266B	Dice Tower constructive algorithms, math	1000	x14288
1265A	Beautiful String constructive algorithms, greedy	1000	x14745
1264F	Beautiful Fibonacci Problem constructive algorithms, number theory	3500	x824
1264E	Beautiful League constructive algorithms, flows, graph matchings	2700	x739
1264B	Beautiful Sequence brute force, constructive algorithms, greedy	1900	x5573
1256F	Equalizing Two Strings constructive algorithms, sortings, strings	2000	x3045
1255C	League of Leesins constructive algorithms, implementation	1600	x6442
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x1258
1254B2	Send Boxes to Alice (Hard Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	2100	x2925
1254B1	Send Boxes to Alice (Easy Version) constructive algorithms, greedy, math, number theory, ternary search, two pointers	1800	x4403
1254A	Feeding Chicken constructive algorithms, greedy, implementation	1700	x4980
1253D	Harmonious Graph constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings	1700	x8810
1250M	SmartGarden constructive algorithms, divide and conquer	2500	x350
1250B	The Feast and the Bus brute force, constructive algorithms, greedy, math	1800	x2558
1245B	Restricted RPS constructive algorithms, dp, greedy	1200	x13421
1244G	Running in Pairs constructive algorithms, greedy, math	2400	x1260
1244F	Chips constructive algorithms, implementation	2300	x1361
1244E	Minimizing Difference binary search, constructive algorithms, greedy, sortings, ternary search, two pointers	2000	x4771
1244D	Paint the Tree brute force, constructive algorithms, dp, graphs, implementation, trees	1800	x7202
1242E	Planar Perimeter constructive algorithms, graphs	3200	x126
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12253
1237H	Balanced Reversals constructive algorithms	3300	x298
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4123
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x5852
1236C	Labs constructive algorithms, greedy, implementation	1300	x9802
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x675
1228F	One Node is Gone constructive algorithms, implementation, trees	2500	x415
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x4961
1227G	Not Same constructive algorithms	2600	x952
1227C	Messy constructive algorithms	1700	x5268
1227B	Box constructive algorithms	1200	x9218
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x521
1225F	Tree Factory constructive algorithms, greedy, trees	2500	x863
1221B	Knights constructive algorithms, greedy	1100	x11568
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x86
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x4928
1215C	Swap Letters constructive algorithms, greedy	1500	x10775