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Problemset

3,464 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
2009E	Klee's SUPER DUPER LARGE Array!!! binary search math ternary search	1400	18.1k
2009F	Firefly's Queries bitmasks data structures flows math	1700	8.7k
2008A	Sakurako's Exam brute force constructive algorithms greedy math	800	42.3k
2008B	Square or Not brute force math strings	800	33.3k
2008C	Longest Good Array binary search brute force math	800	37k
2008D	Sakurako's Hobby dp dsu graphs math	1100	23.9k
2008F	Sakurako's Box combinatorics math number theory	1400	16k
2008G	Sakurako's Task binary search greedy math number theory	1800	6.8k
2008H	Sakurako's Test binary search brute force greedy math number theory	2100	3.7k
2007A	Dora's Set greedy math number theory	800	25.5k
2007C	Dora and C++ math number theory	1500	16.4k
2006B	Iris and the Tree brute force data structures dfs and similar dsu math trees	1800	4.4k
2006C	Eri and Expanded Sets data structures divide and conquer math number theory two pointers	2300	2.1k
2006D	Iris and Adjacent Products data structures greedy implementation math	2600	997
2005A	Simple Palindrome combinatorics constructive algorithms greedy math	900	26.7k
2005B1	The Strict Teacher (Easy Version) greedy math sortings	1000	25.2k
2005B2	The Strict Teacher (Hard Version) binary search greedy math sortings	1200	22.2k
2004A	Closest Point implementation math	800	34k
2004E	Not a Nim Problem brute force games math number theory	2100	5.2k
2004F	Make a Palindrome binary search brute force data structures greedy math	2600	1.4k
2003D1	Turtle and a MEX Problem (Easy Version) greedy math	1500	13.7k
2003D2	Turtle and a MEX Problem (Hard Version) dfs and similar dp graphs greedy implementation math	2100	4.7k
2003E1	Turtle and Inversions (Easy Version) brute force divide and conquer dp greedy math	2600	902
2003E2	Turtle and Inversions (Hard Version) brute force data structures divide and conquer dp greedy math two pointers	2700	654
2003F	Turtle and Three Sequences brute force data structures dp greedy math probabilities two pointers	2800	838
2002A	Distanced Coloring constructive algorithms implementation math	800	21.4k
2002C	Black Circles brute force geometry greedy math	1200	18k
2002F1	Court Blue (Easy Version) brute force dfs and similar dp math number theory	2600	1k
2002F2	Court Blue (Hard Version) brute force dp math number theory	2800	597
2001E1	Deterministic Heap (Easy Version) combinatorics dp math trees	2400	1.6k
2000A	Primary Task implementation math strings	800	44.7k
2000E	Photoshoot for Gorillas combinatorics data structures greedy math	1400	16.6k
2000F	Color Rows and Columns dp greedy implementation math	1900	7.1k
1999A	A+B Again? implementation math	800	86.7k
1999E	Triple Operations dp implementation math	1300	24.3k
1999F	Expected Median combinatorics math	1500	14.5k
1998A	Find K Distinct Points with Fixed Center constructive algorithms implementation math	800	26.3k
1998B	Minimize Equal Sum Subarrays constructive algorithms math number theory	1000	28.5k
1997F	Chips on a Line brute force combinatorics dp greedy math	2700	1.3k
1996A	Legs binary search math ternary search	800	58.7k
1996D	Fun binary search brute force combinatorics math number theory	1500	20k
1996E	Decode combinatorics data structures implementation math	1600	12.9k
1996F	Bomb binary search greedy math	1900	6.5k
1995A	Diagonals brute force greedy implementation math	800	26.6k
1995B2	Bouquet (Hard Version) binary search data structures greedy math sortings two pointers	1700	10.3k
1995C	Squaring brute force constructive algorithms greedy implementation math number theory	1800	10.4k
1994B	Fun Game bitmasks constructive algorithms greedy math	1100	19.8k
1994D	Funny Game constructive algorithms dsu graphs greedy math number theory trees	1900	7.7k
1994E	Wooden Game bitmasks greedy math trees	2000	5.7k
1994G	Minecraft bitmasks brute force dp graphs math	2600	1.7k
1994H	Fortnite combinatorics constructive algorithms games greedy hashing interactive math number theory strings	3500	779
1993C	Light Switches implementation math	1400	16.4k
1993F1	Dyn-scripted Robot (Easy Version) brute force chinese remainder theorem constructive algorithms math number theory	2400	1.2k
1993F2	Dyn-scripted Robot (Hard Version) chinese remainder theorem math number theory	2800	579
1992A	Only Pluses brute force constructive algorithms greedy math sortings	800	50.1k
1992B	Angry Monk greedy math sortings	800	38.5k
1992C	Gorilla and Permutation constructive algorithms math	900	33.8k
1992E	Novice's Mistake brute force constructive algorithms implementation math strings	1700	11k
1992G	Ultra-Meow combinatorics dp math	2000	4.3k
1991C	Absolute Zero constructive algorithms greedy math	1300	18k
1991D	Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory	1900	8k
1991F	Triangle Formation brute force greedy implementation math sortings	2200	2.8k
1991H	Prime Split Game bitmasks dp fft games math number theory	3300	580
1990C	Mad MAD Sum brute force greedy math	1500	14.9k
1989C	Two Movies greedy math	1400	22.9k
1989D	Smithing Skill brute force data structures dp greedy math sortings two pointers	1900	7.2k
1989E	Distance to Different combinatorics dp math	2300	2.6k
1988A	Split the Multiset brute force greedy implementation math	900	27.3k
1988F	Heartbeat combinatorics dp fft math	3000	482
1987A	Upload More RAM greedy math	800	29.3k
1986A	X Axis brute force geometry math sortings	800	48.6k
1986D	Mathematical Problem brute force dp greedy implementation math two pointers	1400	18.2k
1986E	Beautiful Array greedy math number theory sortings	1700	11.1k
1986G1	Permutation Problem (Simple Version) binary search brute force combinatorics data structures math number theory	2200	2k
1986G2	Permutation Problem (Hard Version) brute force data structures hashing math number theory	2500	1.5k
1985B	Maximum Multiple Sum brute force math number theory	800	57.8k
1985D	Manhattan Circle implementation math	900	42.1k
1985E	Secret Box brute force combinatorics math	1200	23.9k
1985G	D-Function combinatorics math number theory	1600	12.5k
1984B	Large Addition implementation math	1100	21.2k
1984C1	Magnitude (Easy Version) dp greedy math	1300	20.6k
1984C2	Magnitude (Hard Version) combinatorics dp greedy math	1700	8.8k
1984D	''a'' String Problem brute force hashing implementation math string suffix structures strings	2000	4k
1984F	Reconstruction brute force dp math	2500	1.2k
1983A	Array Divisibility constructive algorithms math	800	28.3k
1983B	Corner Twist constructive algorithms greedy implementation math	1200	18.6k
1983D	Swap Dilemma constructive algorithms data structures divide and conquer greedy math sortings	1700	11.5k
1983E	I Love Balls combinatorics math probabilities	2300	2.5k
1982A	Soccer greedy implementation math sortings	800	27.7k
1982B	Collatz Conjecture brute force implementation math number theory	1200	20k
1982D	Beauty of the mountains brute force data structures implementation math number theory	1700	10.2k
1982E	Number of k-good subarrays bitmasks brute force combinatorics divide and conquer dp math meet-in-the-middle	2300	1.9k
1981A	Turtle and Piggy Are Playing a Game brute force greedy math	800	24.4k
1981B	Turtle and an Infinite Sequence bitmasks math	1300	16.7k
1981C	Turtle and an Incomplete Sequence bitmasks brute force constructive algorithms greedy implementation math	1800	6.4k
1980A	Problem Generator math	800	48.2k
1980D	GCD-sequence greedy implementation math number theory	1400	17.7k
1980E	Permutation of Rows and Columns constructive algorithms data structures greedy hashing implementation math matrices sortings	1600	13.3k
1980F1	Field Division (easy version) data structures math sortings	1900	4.5k
1980F2	Field Division (hard version) math sortings	2400	1.3k

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