LeetCode

Daily Grind

Monday May 11, 2026
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Today's Problem
Dynamic Programming Medium

309 · Best Time to Buy and Sell Stock with Cooldown

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Today's Results
🥇
Tomas
07:54 1 attempt
🥈
Niklas
11:12 5 attempts 19m 6s 2× Wrong Answer
🥉
Jonas
18:10 1 attempt
4
Louis
18:56 5 attempts
—
Simeon
not yet
—
Darian
not yet
—
Vasushmasu
not yet
—
Edea
not yet
—
KillerBunny
not yet
—
Kent
not yet
—
TschaiLatte
not yet
—
JonasG
not yet
Leaderboard
1
Tomas
🔥 49-day streak · avg 27m 51s
48 / 48
100.0%
2
Niklas
🔥 11-day streak · avg 44m 21s
46 / 48
95.8%
3
Louis
🔥 4-day streak · avg 12m 15s
7 / 48
14.6%
4
Jonas
🔥 4-day streak · avg 0s
6 / 48
12.5%
5
KillerBunny
No streak · avg 2m 21s
20 / 48
41.7%
6
JonasG
No streak · avg 5m 7s
12 / 48
25.0%
7
Darian
No streak · avg 16s
7 / 48
14.6%
8
Vasushmasu
No streak · avg 3m 10s
6 / 48
12.5%
9
Kent
No streak · avg 0s
3 / 48
6.2%
10
Simeon
No streak · avg 0s
2 / 48
4.2%
11
TschaiLatte
No streak · avg 5m 46s
1 / 48
2.1%
12
Edea
No streak
0 / 48
0.0%
Analytics

Solve time per problem (seconds)

Failed submissions per problem

Recent History Full history →
DateProblemDifficultySet NiklasSimeonTomasDarianLouisJonasVasushmasuEdeaKillerBunnyKentTschaiLatteJonasG
2026-05-11 309 Best Time to Buy and Sell Stock with Cooldown Medium Dynamic Programming ✓5 ○ ✓ ○ ✓5 ✓ ○ ○ ○ ○ ○ ○
2026-05-10 1312 Minimum Insertion Steps to Make a String Palindrome Hard Dynamic Programming ✓3 ○ ✓3 ○ ✓6 ✓ ○ ○ ○ ○ ○ ✓
2026-05-09 11 Container With Most Water Medium Two Pointers ✓ ✓ ✓5 ○ ✓4 ✓ ○ ○ ○ ○ ○ ○
2026-05-08 1091 Shortest Path in Binary Matrix Medium Graph Theory ✓3 ○ ✓3 ○ ✓2 ✓ ○ ○ ○ ○ ○ ✓
2026-05-07 33 Search in Rotated Sorted Array Medium Probability DP ✓2 ○ ✓3 ○ ○ ○ ○ ○ ✓ ○ ○ ○
2026-05-06 275 H-Index II Medium Binary Search ✓6 ○ ✓4 ○ ○ ○ ✓9 ○ ○ ○ ○ ✓13
2026-05-05 542 01 Matrix Medium Graph Theory ✓ ○ ✓2 ○ ✓ ○ ○ ○ ○ ○ ○ ✓5
2026-05-04 1035 Uncrossed Lines Medium Dynamic Programming ✓ ○ ✓2 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-05-03 1143 Longest Common Subsequence Medium Dynamic Programming ✓6 ○ ✓ ○ ○ ○ ○ ○ ○ ✓2 ○ ✓
2026-05-02 931 Minimum Falling Path Sum Medium Two Pointers ✓6 ○ ✓2 ✓ ○ ○ ○ ○ ✓ ○ ○ ○
2026-05-01 1306 Jump Game III Medium Graph Theory ✓ ○ ✓ ○ ○ ○ ○ ○ ○ ○ ○ ✓
2026-04-30 1146 Snapshot Array Medium Probability DP ○ ○ ✓10 ○ ○ ○ ○ ○ ✓3 ○ ○ ○
2026-04-29 367 Valid Perfect Square Easy Binary Search ✓3 ○ ✓6 ○ ○ ○ ○ ○ ○ ○ ○ ✓4
2026-04-28 127 Word Ladder Hard Graph Theory ✓5 ○ ✓21 ○ ○ ○ ○ ○ ○ ○ ○ ✓
2026-04-27 1964 Find the Longest Valid Obstacle Course at Each Position Hard Dynamic Programming ✓3 ○ ✓5 ○ ○ ○ ○ ○ ○ ○ ✓7 ✓2
2026-04-26 354 Russian Doll Envelopes Hard Dynamic Programming ✓3 ○ ✓25 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-25 120 Triangle Medium Two Pointers ✓4 ○ ✓5 ✓ ○ ○ ○ ○ ✓ ○ ○ ○
2026-04-24 433 Minimum Genetic Mutation Medium Graph Theory ✓4 ○ ✓ ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-23 981 Time Based Key-Value Store Medium Probability DP ✓3 ○ ✓6 ○ ○ ○ ○ ○ ✓2 ○ ○ ○
2026-04-22 74 Search a 2D Matrix Medium Binary Search ✓2 ○ ✓ ○ ○ ○ ○ ○ ○ ○ ○ ✓3
2026-04-21 934 Shortest Bridge Medium Graph Theory ✓13 ○ ✓5 ○ ✓2 ○ ○ ○ ○ ○ ○ ○
2026-04-20 1027 Longest Arithmetic Subsequence Medium Dynamic Programming ✓4 ○ ✓7 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-19 1218 Longest Arithmetic Subsequence of Given Difference Medium Dynamic Programming ✓6 ○ ✓17 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-18 509 Fibonacci Number Easy Two Pointers ✓4 ○ ✓2 ✓6 ○ ○ ✓2 ○ ✓ ○ ○ ○
2026-04-17 1926 Nearest Exit from Entrance in Maze Medium Graph Theory ✓ ○ ✓6 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-16 436 Find Right Interval Medium Probability DP ✓4 ○ ✓9 ○ ○ ○ ○ ○ ✓ ○ ○ ○
2026-04-15 278 First Bad Version Easy Binary Search ✓2 ○ ✓5 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-14 1192 Critical Connections in a Network Hard Graph Theory ✓6 ○ ✓11 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-13 646 Maximum Length of Pair Chain Medium Dynamic Programming ✓4 ○ ✓14 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-04-12 673 Number of Longest Increasing Subsequence Medium Dynamic Programming ✓3 ○ ✓14 ○ ○ ○ ○ ○ ○ ○ ○ ○