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IBory

Open on Codeforces · Unique solved

Rating2429· Grandmaster

Bar charts count unique accepted problems (merged with the global problem set for rating and tags). Heatmaps use UTC calendar days. Rating squares are sums of newRating − oldRating from user.rating when System update time falls on that day. Submissions count every row from user.status (all verdicts), paginated until Codeforces has no more rows—heavy accounts can take a few seconds.

Rated contests
107
Unique solved
1,161
Submissions (all)
2,866
Years with activity
2021–2026

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated203
  • 800–899210
  • 900–99943
  • 1000–109950
  • 1100–119957
  • 1200–129958
  • 1300–139955

Solved by topic

Each problem counts once per tag (same as Codeforces tags). Top tags shown; remaining mass in “Other”.

  • greedy480
  • math404
  • constructive algorithms267
  • implementation261
  • brute force236
  • dp189
  • data structures

Rating changes

2021

Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

Count of submissions per UTC day (includes every verdict).

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)240+32429
2024-10-27 17:35Codeforces Global Round 2770+1522426
2024-10-20 11:05Codeforces Round 980 (Div. 1)464-332274
2024-08-30 17:05Codeforces Round 969 (Div. 1)394-192307
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)
1400–1499
52
  • 1500–159941
  • 1600–169956
  • 1700–179960
  • 1800–189943
  • 1900–199949
  • 2000–209935
  • 2100–219942
  • 2200–229922
  • 2300–239929
  • 2400–249919
  • 2500–259917
  • 2600–26998
  • 2700–27996
  • 2800–28992
  • 2900–29992
  • 3100–31992
  • 168
  • sortings163
  • binary search132
  • dfs and similar102
  • graphs97
  • number theory89
  • two pointers87
  • bitmasks86
  • strings81
  • trees74
  • combinatorics73
  • dsu49
  • games36
  • geometry26
  • shortest paths25
  • divide and conquer25
  • interactive21
  • hashing17
  • probabilities11
  • matrices10
  • ternary search6
  • 2-sat6
  • Other (7 tags)15
  • Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2022

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2023

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2024

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2025

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2026

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 30/day in 2021)

    2022

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 42/day in 2022)

    2023

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 29/day in 2023)

    2024

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 106/day in 2024)

    2025

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 46/day in 2025)

    2026

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 12/day in 2026)

    560
    -23
    2326
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)214+692349
    2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)378+202280
    2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)203+862260
    2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)468+172174
    2024-04-30 17:05Codeforces Round 942 (Div. 1)690-482157
    2024-04-27 16:35Codeforces Round 941 (Div. 1)436+132205
    2024-04-06 17:35Codeforces Global Round 25477+342192