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Top rated · Stats

mollnn

Open on Codeforces · Unique solved

Rating2126· Master

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
10
Unique solved
1,072
Submissions (all)
2,508
Years with activity
2019–2026

Solved by problem rating

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

  • Unrated109
  • 800–89968
  • 900–99919
  • 1000–109925
  • 1100–119924
  • 1200–129925
  • 1300–139927

Solved by topic

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

  • greedy354
  • math301
  • dp292
  • data structures213
  • implementation212
  • constructive algorithms207

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-03-21 15:35Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round)435+132126
2021-03-13 11:35Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics)631-1102113
2021-02-07 16:50Codeforces Round 700 (Div. 1)285+612223
2020-09-12 15:45Codeforces Round 670 (Div. 2)27+1572162
2020-07-19 11:00Codeforces Round 657 (Div. 2)
1400–1499
23
  • 1500–159933
  • 1600–169930
  • 1700–179964
  • 1800–189961
  • 1900–1999104
  • 2000–2099108
  • 2100–2199136
  • 2200–2299105
  • 2300–239945
  • 2400–249933
  • 2500–259913
  • 2600–26999
  • 2700–27996
  • 2800–28993
  • 3100–31991
  • 3200–32991
  • brute force
    167
  • graphs145
  • sortings138
  • binary search133
  • dfs and similar125
  • trees94
  • number theory90
  • strings84
  • combinatorics78
  • two pointers72
  • bitmasks71
  • shortest paths46
  • dsu45
  • games40
  • divide and conquer37
  • geometry28
  • hashing24
  • probabilities18
  • string suffix structures15
  • ternary search13
  • interactive11
  • flows11
  • Other (9 tags)40
  • 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.

    2020

    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.

    2021

    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 26/day in 2019)

    2020

    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 33/day in 2020)

    2021

    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 58/day in 2021)

    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 1/day in 2026)

    696
    +9
    2005
    2020-07-01 15:35Codeforces Round 654 (Div. 2)1007-381996
    2020-05-16 13:35Codeforces Round 643 (Div. 2)49+1862034
    2020-05-12 15:05Codeforces Round 641 (Div. 2)178+1251848
    2020-03-31 16:05Codeforces Round 630 (Div. 2)2254+41723
    2020-03-12 15:05Codeforces Round 627 (Div. 3)27+17191719