Problemset - Codeforces

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Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
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Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
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shortest paths

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Problems

#	Name
2214E	Shortest Paths *special problem, shortest paths		x1042
2207D	Boxed Like a Fish dfs and similar, dp, games, shortest paths, trees	2200	x2101
2193E	Product Queries dp, math, number theory, shortest paths	1300	x15159
2178H	Create or Duplicate bitmasks, graphs, number theory, shortest paths	3300	x311
2172M	Maximum Distance To Port graphs, shortest paths	1300	x5795
2158D	Palindrome Flipping brute force, constructive algorithms, graphs, implementation, shortest paths, strings	2000	x3278
2150F	Cycle Closing constructive algorithms, graphs, implementation, shortest paths, trees	3000	x203
2132F	Rada and the Chamomile Valley dfs and similar, graphs, shortest paths	2100	x2768
2128F	Strict Triangle graphs, greedy, shortest paths	3200	x378
2122D	Traffic Lights brute force, data structures, divide and conquer, dp, graphs, greedy, shortest paths	2400	x2467
2119F	Volcanic Eruptions dfs and similar, dp, greedy, shortest paths, trees	3300	x173
2117G	Omg Graph brute force, dsu, graphs, greedy, shortest paths, sortings	1900	x5139
2112F	Variables and Operations graphs, greedy, shortest paths	2800	x637
2109F	Penguin Steps binary search, dfs and similar, flows, graphs, shortest paths	3000	x274
2109D	D/D/D dfs and similar, graphs, greedy, shortest paths	1900	x5615
2108E	Spruce Dispute constructive algorithms, dfs and similar, graphs, greedy, implementation, shortest paths, trees	2600	x888
2091G	Gleb and Boating brute force, constructive algorithms, data structures, dp, graphs, greedy, math, number theory, shortest paths	2300	x1522
2068I	Pinball graphs, shortest paths	3500	x61
2068G	A Very Long Hike shortest paths	3500	x62
2068E	Porto Vs. Benfica data structures, dfs and similar, dsu, graphs, shortest paths	2800	x369
2059D	Graph and Graph data structures, graphs, greedy, shortest paths	1900	x6558
2057E2	Another Exercise on Graphs (hard version) binary search, dfs and similar, dp, dsu, graphs, shortest paths, sortings	2500	x1927
2057E1	Another Exercise on Graphs (Easy Version) binary search, brute force, dp, dsu, graphs, shortest paths, sortings	2300	x2636
2053I2	Affectionate Arrays (Hard Version) data structures, dp, graphs, greedy, math, shortest paths, two pointers	3500	x107
2052I	Incompetent Delivery Guy graphs, shortest paths	2800	x152
2045G	X Aura graphs, math, shortest paths	2200	x935
2043F	Nim bitmasks, brute force, combinatorics, dp, games, greedy, implementation, shortest paths	2700	x905
2041D	Drunken Maze brute force, dfs and similar, graphs, shortest paths	1700	x4768
2023B	Skipping binary search, dp, graphs, shortest paths	1700	x7068
2014E	Rendez-vous de Marian et Robin dfs and similar, graphs, shortest paths	1800	x8711
2004D	Colored Portals binary search, brute force, data structures, graphs, greedy, implementation, shortest paths	1600	x13248
2000G	Call During the Journey binary search, brute force, graphs, greedy, shortest paths	2100	x3128
1998D	Determine Winning Islands in Race data structures, dp, graphs, greedy, shortest paths	2100	x4091
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x7491
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x977
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1519
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x21080
1941G	Rudolf and Subway constructive algorithms, dfs and similar, graphs, shortest paths	2000	x4650
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1724
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2954
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1348
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x16742
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x1196
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x9691
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x4023
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x9513
1898F	Vova Escapes the Matrix brute force, dfs and similar, divide and conquer, shortest paths	2600	x942
1887B	Time Travel binary search, graphs, shortest paths	1900	x3898
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x9563
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1392
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x9498
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2956
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x25675
1860E	Fast Travel Text Editor data structures, dfs and similar, graphs, shortest paths	2400	x1807
1859F	Teleportation in Byteland data structures, dfs and similar, divide and conquer, graphs, shortest paths, trees	3200	x523
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x5658
1842F	Tenzing and Tree dfs and similar, greedy, shortest paths, sortings, trees	2500	x1808
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x18388
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x3600
1804F	Approximate Diameter binary search, divide and conquer, graphs, shortest paths	2700	x1175
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2860
1790G	Tokens on Graph constructive algorithms, dfs and similar, graphs, shortest paths	2300	x1315
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3994
1779G	The Game of the Century constructive algorithms, graphs, shortest paths	3000	x387
1776J	Italian Data Centers graphs, shortest paths	2500	x881
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x8457
1765I	Infinite Chess implementation, shortest paths	2800	x263
1759C	Thermostat greedy, math, shortest paths	1100	x19384
1753D	The Beach constructive algorithms, dfs and similar, graphs, shortest paths	2400	x2071
1749E	Cactus Wall constructive algorithms, dfs and similar, graphs, shortest paths	2400	x2069
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1934
1738F	Connectivity Addicts constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees	2400	x1380
1737D	Ela and the Wiring Wizard brute force, dp, graphs, greedy, implementation, shortest paths	2200	x2101
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x4380
1715E	Long Way Home data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths	2400	x2128
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x5101
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x6011
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x14029
1693C	Keshi in Search of AmShZ graphs, greedy, shortest paths	2300	x3184
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4741
1681E	Labyrinth Adventures data structures, dp, matrices, shortest paths	2600	x939
1681D	Required Length brute force, dfs and similar, dp, hashing, shortest paths	1700	x10750
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1582
1662F	Antennas data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths		x1245
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x20643
1654G	Snowy Mountain data structures, dfs and similar, graphs, greedy, shortest paths, trees	2900	x457
1651D	Nearest Excluded Points binary search, data structures, dfs and similar, graphs, shortest paths	1900	x6480
1650G	Counting Shortcuts data structures, dfs and similar, dp, graphs, shortest paths	2100	x2930
1648D	Serious Business data structures, divide and conquer, dp, implementation, shortest paths	2800	x1051
1632E2	Distance Tree (hard version) binary search, dfs and similar, shortest paths, trees	2700	x1196
1632E1	Distance Tree (easy version) binary search, data structures, dfs and similar, graphs, shortest paths, trees	2400	x1338
1627F	Not Splitting geometry, graphs, greedy, implementation, shortest paths	2700	x654
1627E	Not Escaping data structures, dp, implementation, shortest paths, two pointers	2200	x2787
1621H	Trains and Airplanes dfs and similar, graphs, shortest paths, trees	3500	x199
1617E	Christmas Chocolates dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees	2700	x1016
1615H	Reindeer Games binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths	3000	x386
1612F	Armor and Weapons brute force, dp, greedy, shortest paths	2800	x693
1611E2	Escape The Maze (hard version) dfs and similar, dp, greedy, shortest paths, trees	1900	x4314
1611E1	Escape The Maze (easy version) dfs and similar, greedy, shortest paths, trees, two pointers	1700	x8345
1601B	Frog Traveler data structures, dfs and similar, dp, graphs, shortest paths, two pointers	1900	x5502

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