Problemset - Codeforces

→ Pay attention

Before contest
2023 Post World Finals Online ICPC Challenge powered by Huawei
34:22:24
Register now »

→ Filter Problems

Difficulty: —

constructive algorithms

Add tag

Problems

#	Name
1244D	Paint the Tree brute force, constructive algorithms, dp, graphs, implementation, trees	1800	x7222
1242E	Planar Perimeter constructive algorithms, graphs	3200	x127
1242A	Tile Painting constructive algorithms, math, number theory	1500	x12273
1237H	Balanced Reversals constructive algorithms	3300	x303
1237C2	Balanced Removals (Harder) binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings	1900	x4128
1237C1	Balanced Removals (Easier) constructive algorithms, geometry, greedy	1700	x5860
1236C	Labs constructive algorithms, greedy, implementation	1300	x9859
1231E	Middle-Out constructive algorithms, greedy, strings	2200	x679
1228F	One Node is Gone constructive algorithms, implementation, trees	2500	x417
1228D	Complete Tripartite brute force, constructive algorithms, graphs, hashing, implementation	1900	x4968
1227G	Not Same constructive algorithms	2600	x955
1227C	Messy constructive algorithms	1700	x5313
1227B	Box constructive algorithms	1200	x9223
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	x11592
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x87
1217D	Coloring Edges constructive algorithms, dfs and similar, graphs	2100	x4940
1215C	Swap Letters constructive algorithms, greedy	1500	x10806
1214H	Tiles Placement constructive algorithms, dfs and similar, trees	2800	x370
1214E	Petya and Construction Set constructive algorithms, graphs, math, sortings, trees	2000	x2506
1213E	Two Small Strings brute force, constructive algorithms	1900	x4913
1209C	Paint the Digits constructive algorithms, greedy, implementation	1500	x7218
1208C	Magic Grid constructive algorithms	1800	x5778
1207B	Square Filling constructive algorithms, greedy, implementation	1200	x12940
1205F	Beauty of a Permutation constructive algorithms, math	3400	x121
1205D	Almost All constructive algorithms, trees	2700	x612
1205A	Almost Equal constructive algorithms, greedy, math	1200	x13813
1202D	Print a 1337-string... combinatorics, constructive algorithms, math, strings	1900	x4873
1198C	Matching vs Independent Set constructive algorithms, graphs, greedy, sortings	2000	x3319
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2306
1196E	Connected Component on a Chessboard constructive algorithms, implementation	1800	x3521
1196B	Odd Sum Segments constructive algorithms, math	1200	x16140
1196A	Three Piles of Candies brute force, constructive algorithms, math	800	x27135
1193C	Scissors and Tape *special problem, constructive algorithms, geometry		x35
1188A2	Add on a Tree: Revolution constructive algorithms, dfs and similar, implementation, trees	2500	x1071
1187C	Vasya And Array constructive algorithms, greedy, implementation	1800	x6072
1186D	Vus the Cossack and Numbers constructive algorithms, greedy, math	1500	x8703
1182D	Complete Mirror constructive algorithms, dfs and similar, dp, hashing, implementation, trees	2400	x802
1179B	Tolik and His Uncle constructive algorithms	1800	x4298
1178E	Archaeology brute force, constructive algorithms, greedy, strings	1900	x4117
1178D	Prime Graph constructive algorithms, greedy, math, number theory	1500	x7141
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2400	x1439
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4595
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x11790
1174A	Ehab Fails to Be Thanos constructive algorithms, greedy, sortings	1000	x17196
1173B	Nauuo and Chess constructive algorithms, greedy	1100	x8757
1172D	Nauuo and Portals constructive algorithms	2900	x480
1170H	Longest Saw *special problem, constructive algorithms		x43
1168E	Xor Permutations constructive algorithms, math	3100	x354
1167D	Bicolored RBS constructive algorithms, greedy	1500	x6830
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2781
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11252
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x646
1158D	Winding polygonal line constructive algorithms, geometry, greedy, math	2600	x663
1158C	Permutation recovery constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings	2100	x1696
1158B	The minimal unique substring constructive algorithms, math, strings	2200	x2191
1158A	The Party and Sweets binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers	1500	x6849
1157G	Inverse of Rows and Columns brute force, constructive algorithms	2200	x870
1157F	Maximum Balanced Circle constructive algorithms, dp, greedy, two pointers	2000	x2519
1157D	N Problems During K Days constructive algorithms, greedy, math	1900	x3604
1153B	Serval and Toy Bricks constructive algorithms, greedy	1200	x8952
1152E	Neko and Flashback constructive algorithms, dfs and similar, graphs	2400	x935
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8801
1151C	Problem for Nazar constructive algorithms, math	1800	x5251
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10678
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x14671
1148G	Gold Experience constructive algorithms, graphs, math, number theory, probabilities	3300	x314
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x967
1148E	Earth Wind and Fire constructive algorithms, greedy, math, sortings, two pointers	2300	x1655
1148C	Crazy Diamond constructive algorithms, sortings	1700	x5087
1144D	Equalize Them All constructive algorithms, greedy	1400	x10026
1144C	Two Shuffled Sequences constructive algorithms, sortings	1000	x14911
1141G	Privatization of Roads in Treeland binary search, constructive algorithms, dfs and similar, graphs, greedy, trees	1900	x2185
1137D	Cooperative Game constructive algorithms, interactive, number theory	2400	x1465
1136C	Nastya Is Transposing Matrices constructive algorithms, sortings	1500	x7617
1136B	Nastya Is Playing Computer Games constructive algorithms, math	1000	x11529
1133F2	Spanning Tree with One Fixed Degree constructive algorithms, dfs and similar, dsu, graphs, greedy	1900	x3109
1131F	Asya And Kittens constructive algorithms, dsu	1700	x6373
1129B	Wrong Answer constructive algorithms	2000	x2150
1120B	Once in a casino constructive algorithms, greedy, implementation, math	2700	x405
1119G	Get Ready for the Battle constructive algorithms, implementation	3100	x413
1119C	Ramesses and Corner Inversion constructive algorithms, greedy, implementation, math	1500	x6559
1118E	Yet Another Ball Problem constructive algorithms, implementation	1700	x4035
1118C	Palindromic Matrix constructive algorithms, implementation	1700	x5644
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1447
1114B	Yet Another Array Partitioning Task constructive algorithms, greedy, sortings	1500	x8844
1110G	Tree-Tac-Toe constructive algorithms, games, trees	3100	x602
1110E	Magic Stones constructive algorithms, math, sortings	2200	x3805
1110C	Meaningless Operations constructive algorithms, math, number theory	1500	x8914
1109B	Sasha and One More Name constructive algorithms, hashing, strings	1800	x4264
1108D	Diverse Garland constructive algorithms, dp, greedy	1400	x14694
1107G	Vasya and Maximum Profit binary search, constructive algorithms, data structures, dp, dsu	2400	x988
1104A	Splitting into digits constructive algorithms, implementation, math	800	x15160
1103C	Johnny Solving constructive algorithms, dfs and similar, graphs, math	2700	x777
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x3170
1103A	Grid game constructive algorithms, implementation	1400	x9580
1100D	Dasha and Chess constructive algorithms, games, interactive	2500	x831
1099C	Postcard constructive algorithms, implementation	1200	x9399
1099B	Squares and Segments binary search, constructive algorithms, math	1100	x10979