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CK

C. K.

Deque Hand

@metronJoined August 2026

Deque HandLevel 20

3,020 / 9,000 to 21

#4Global Rank · Top 4%

1follower

1following

🔥0fires

Problems Solved

112

+18 this week

Current Streak

17 days

Best: 17 days

Total XP

23,020

+5,020 this week

Acceptance Rate

95%

119 of 125 accepted

Breakdown

All problems →

By difficulty112 solved

9

Coreof 12

39

Bronzeof 79

56

Silverof 129

Category Progress

Tier I · Fundamentals

Hash Maps
Stacks & Queues

Recent Activity

Solved Total XOR Over All Subsets
BronzePythonAccepted
7h ago
Solved Kth Node in Subtree Preorder
SilverPythonAccepted
19h ago
Solved Shortest Grid Path with Limited Blocked Cells
Gold

Submissions

125

+21 this week

8

Gold

of 42

Languages

Python100%

Activity Calendar

Sep

Oct

Nov

Dec

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Feb

Mar

Apr

May

Jun

Jul

Aug

Mon

Wed

Fri

LessMore

Submissions: 125; last 12 months
Active days: 30; days with a submission
Busiest day: 11; Aug 14

Tier II · Intermediate

Prefix Sums
Math & Number Theory
Merge Intervals
Greedy
Depth-First Search I
Breadth-First Search I
Depth-First Search II
Breadth-First Search II
Heaps & Priority Queues
Backtracking
Kadane's Algorithm
Bit Manipulation
Topological Sort
Tries
1D Linear DP

Tier III · Advanced

Monotonic Stack
Knapsack
State Machine DP
Grid DP
Two-Sequence DP
Longest Increasing Subsequence
Tree DP
Union-Find
Bipartite Graphs
Line Sweep
Shortest Paths

Tier IV · Mastery

Interval DP
Bitmask DP
Digit DP
Segment Trees
String Matching

101 of 175 problems · 13 of 36 categories cleared

Leaderboard

midnight_simon116 solved
2C.metron112 solved

Full leaderboard

·

Python

·

Accepted

22h ago

Solved Distance Between Tree Nodes

SilverPythonAccepted

Solved Longest Path in Binary Tree

BronzePythonAccepted

Solved Shortest Prefix Replacement

SilverPythonAccepted