Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
3 days
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constructive algorithms

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Problems

#	Name
1530D	Secret Santa constructive algorithms, flows, graphs, greedy, math	1600	x9166
1530B	Putting Plates constructive algorithms, implementation	800	x15771
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29715
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms, graphs, shortest paths	2500	x1428
1527B2	Palindrome Game (hard version) constructive algorithms, games	1900	x7874
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x25920
1526F	Median Queries constructive algorithms, interactive, probabilities	3000	x274
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1046
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2405
1526A	Mean Inequality constructive algorithms, sortings	800	x24127
1525B	Permutation Sort constructive algorithms, greedy	900	x24685
1523B	Lord of the Values constructive algorithms	1100	x12078
1521E	Nastia and a Beautiful Matrix binary search, constructive algorithms, dp, greedy	2700	x669
1521D	Nastia Plays with a Tree constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees	2500	x1933
1521C	Nastia and a Hidden Permutation constructive algorithms, interactive	2000	x4341
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21285
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x36867
1520F2	Guess the K-th Zero (Hard version) binary search, constructive algorithms, data structures, interactive	2200	x2996
1520C	Not Adjacent Matrix constructive algorithms	1000	x31592
1519E	Off by One constructive algorithms, dfs and similar, geometry, graphs, sortings, trees	2700	x819
1517G	Starry Night Camping constructive algorithms, flows, graphs	3300	x492
1517C	Fillomino 2 constructive algorithms, dfs and similar, greedy, implementation	1400	x13337
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13232
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11899
1515F	Phoenix and Earthquake constructive algorithms, dfs and similar, dsu, graphs, greedy, trees	2600	x1768
1515C	Phoenix and Towers constructive algorithms, data structures, greedy	1400	x17059
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20201
1513F	Swapping Problem brute force, constructive algorithms, data structures, sortings	2500	x1260
1513E	Cost Equilibrium combinatorics, constructive algorithms, math, sortings	2300	x1494
1513D	GCD and MST constructive algorithms, dsu, graphs, greedy, number theory, sortings	2000	x5357
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14603
1513A	Array and Peaks constructive algorithms, implementation	800	x19343
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x22485
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x20060
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11448
1511B	GCD Length constructive algorithms, math, number theory	1100	x22810
1510J	Japanese Game constructive algorithms, math	2700	x521
1509A	Average Height constructive algorithms	800	x25961
1508E	Tree Calendar brute force, constructive algorithms, data structures, dfs and similar, sortings, trees	3100	x346
1508D	Swap Pass constructive algorithms, geometry, sortings	3000	x565
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3975
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x6210
1506F	Triangular Paths constructive algorithms, graphs, math, shortest paths, sortings	2000	x3258
1506E	Restoring the Permutation constructive algorithms, implementation	1500	x13035
1506D	Epic Transformation constructive algorithms, data structures, greedy	1400	x21632
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x18386
1504A	Déjà Vu constructive algorithms, strings	800	x21657
1503F	Balance the Cards constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation	3500	x182
1503D	Flip the Cards 2-sat, constructive algorithms, data structures, greedy, sortings, two pointers	2600	x1074
1503B	3-Coloring constructive algorithms, games, interactive	1700	x7022
1503A	Balance the Bits constructive algorithms, greedy	1600	x13365
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x801
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21224
1497C2	k-LCM (hard version) constructive algorithms, math	1600	x17149
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x25607
1497B	M-arrays constructive algorithms, greedy, math	1200	x19777
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x20845
1495F	Squares constructive algorithms, data structures, dp, graphs, trees	3300	x294
1495C	Garden of the Sun constructive algorithms, graphs	2300	x2619
1494F	Delete The Edges brute force, constructive algorithms, dfs and similar, graphs, implementation	2900	x338
1494E	A-Z Graph constructive algorithms, data structures, graphs, hashing	2400	x1752
1494D	Dogeforces constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees	2300	x2558
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x926
1493C	K-beautiful Strings binary search, brute force, constructive algorithms, greedy, strings	2000	x4585
1493A	Anti-knapsack constructive algorithms, greedy	800	x19281
1492E	Almost Fault-Tolerant Database brute force, constructive algorithms, dfs and similar, greedy, implementation	2500	x1177
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6082
1491G	Switch and Flip constructive algorithms, graphs, math	2800	x820
1491F	Magnets binary search, constructive algorithms, interactive	2700	x993
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7151
1490B	Balanced Remainders brute force, constructive algorithms, math	1000	x26115
1487C	Minimum Ties brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math	1500	x14099
1486E	Paired Payment binary search, brute force, constructive algorithms, dp, flows, graphs, shortest paths	2200	x2890
1485D	Multiples and Power Differences constructive algorithms, graphs, math, number theory	2200	x5134
1482C	Basic Diplomacy brute force, constructive algorithms, greedy, implementation	1600	x9365
1481D	AB Graph brute force, constructive algorithms, graphs, greedy, implementation	2000	x4523
1481C	Fence Painting brute force, constructive algorithms, greedy	1600	x11595
1479C	Continuous City bitmasks, constructive algorithms	2500	x1320
1479B2	Painting the Array II constructive algorithms, data structures, dp, greedy, implementation	2100	x4031
1479B1	Painting the Array I constructive algorithms, data structures, dp, greedy, implementation	1900	x6943
1477D	Nezzar and Hidden Permutations constructive algorithms, dfs and similar, graphs	2800	x544
1477C	Nezzar and Nice Beatmap constructive algorithms, geometry, greedy, math, sortings	2200	x2302
1477A	Nezzar and Board constructive algorithms, math, number theory	1800	x5894
1476A	K-divisible Sum binary search, constructive algorithms, greedy, math	1000	x37114
1475F	Unusual Matrix 2-sat, brute force, constructive algorithms	1900	x5290
1474E	What Is It? constructive algorithms, greedy	2500	x1324
1474C	Array Destruction brute force, constructive algorithms, data structures, greedy, implementation, sortings	1700	x12625
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x28387
1473C	No More Inversions constructive algorithms, math	1500	x12655
1470D	Strange Housing constructive algorithms, dfs and similar, graph matchings, graphs, greedy	2200	x3707
1470C	Strange Shuffle binary search, brute force, constructive algorithms, interactive	2500	x1327
1469D	Ceil Divisions brute force, constructive algorithms, math, number theory	1700	x9405
1469A	Regular Bracket Sequence constructive algorithms, greedy	1000	x27288
1468H	K and Medians constructive algorithms, greedy, math	2200	x1786
1467C	Three Bags constructive algorithms, greedy	1900	x6378
1467A	Wizard of Orz constructive algorithms, greedy, math	900	x24281
1463E	Plan of Lectures constructive algorithms, dfs and similar, dsu, graphs, implementation, sortings, trees	2400	x1503
1463D	Pairs binary search, constructive algorithms, greedy, two pointers	1900	x4405
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x19312
1461F	Mathematical Expression constructive algorithms, dp, greedy	2700	x545