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mattmerr

mattmerr

Hash Slinger

@mattmerrJoined October 2026

mattmerr47

Hash SlingerLevel 15

1,085 / 2,800 to 16

#20Global Rank · Top 12%

0followers

Problems Solved

43

+42 this week

Current Streak

8 days

Best: 8 days

Total XP

7,085

+6,860 this week

Acceptance Rate

68%

54 of 80 accepted

Breakdown

All problems →

By difficulty43 solved

24

Bronzeof 97

17

Silverof 174

2

Goldof 48

Category Progress

Tier I · Fundamentals

Hash Maps
Stacks & Queues

Recent Activity

Solved Leftmost Deepest Node Value
BronzePythonAccepted
1h ago
Solved Longest Consecutive Run
SilverPythonAccepted
3h ago
Solved Best Digit-Sum Pair
Silver

1following

🔥0fires

Submissions

80

+79 this week

0

Platinum

of 7

Core7 of 40

Languages

Python100%

Activity Calendar

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Mon

Wed

Fri

LessMore

Submissions: 80; last 12 months
Active days: 8; days with a submission
Busiest day: 21; Oct 9

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
Binary Tries

Tier IV · Mastery

Interval DP
Bitmask DP
Digit DP
Segment Trees
String Matching

33 of 176 problems · 1 of 37 categories cleared

Leaderboard

midnight_simon152 solved
2mattmerr43 solved

Full leaderboard

Python

·

Accepted

3h ago

Solved Top K by Frequency

SilverPythonAccepted

Solved Count Equal Pairs

BronzePythonAccepted

Solved Anagram Check

BronzePythonAccepted