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riverwalk7

Open on Codeforces · Unique solved

Rating2474· 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
17
Unique solved
1,123
Submissions (all)
2,026
Years with activity
2016–2026

Solved by problem rating

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

  • Unrated208
  • 800–899156
  • 900–99943
  • 1000–109953
  • 1100–119945
  • 1200–129950
  • 1300–139948

Solved by topic

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

  • math374
  • greedy335
  • implementation257
  • brute force205
  • dp183
  • constructive algorithms180
  • data structures

Rating changes

2016

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

Jan
Feb
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May

Submission volume

Download all years PNG

2016

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-10-12 17:05Codeforces Round 1058 (Div. 1)93+802474
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)348+62394
2022-03-24 16:35CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!)115+1162388
2022-01-22 16:35Codeforces Round 767 (Div. 1)497-462272
2020-08-16 17:35Codeforces Global Round 10
1400–1499
43
  • 1500–159943
  • 1600–169936
  • 1700–179945
  • 1800–189950
  • 1900–199940
  • 2000–209936
  • 2100–219936
  • 2200–229930
  • 2300–239929
  • 2400–249940
  • 2500–259924
  • 2600–269920
  • 2700–279916
  • 2800–28998
  • 2900–299910
  • 3000–30994
  • 3100–31994
  • 3200–32992
  • 3300–33993
  • 3400–34991
  • 136
  • binary search127
  • sortings123
  • graphs97
  • number theory91
  • dfs and similar77
  • combinatorics77
  • bitmasks75
  • trees66
  • two pointers60
  • strings55
  • geometry33
  • dsu31
  • interactive31
  • games30
  • divide and conquer28
  • probabilities25
  • shortest paths19
  • *special14
  • hashing9
  • fft8
  • ternary search7
  • Other (8 tags)34
  • Jun
    Jul
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    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.

    2017

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    Oct
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    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.

    2018

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

    Jan
    Feb
    Mar
    Apr
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    Jun
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    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.

    2019

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

    Jan
    Feb
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    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
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    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
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    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
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    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
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    Jun
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    Aug
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    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
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    Jun
    Jul
    Aug
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    Oct
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    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
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    Jun
    Jul
    Aug
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    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
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    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
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    LessMore (max 14/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 10/day in 2018)

    2019

    Download PNG

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

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    LessMore (max 6/day in 2019)

    2020

    Download PNG

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

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    2021

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

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    2022

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

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    2023

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

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    LessMore (max 63/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 8/day in 2024)

    2025

    Download PNG

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

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    LessMore (max 20/day in 2025)

    2026

    Download PNG

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

    Jan
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    LessMore (max 2/day in 2026)

    430
    -11
    2318
    2020-08-12 16:35Codeforces Round 664 (Div. 1)101+1232329
    2019-01-05 19:05Codeforces Round 530 (Div. 1)135+662206
    2019-01-04 17:45Hello 2019297+592140
    2018-10-07 19:05Lyft Level 5 Challenge 2018 - Elimination Round411-22081
    2018-07-26 17:05Codeforces Round 499 (Div. 1)322-182083
    2018-04-07 18:35Divide by Zero 2018 and Codeforces Round 474 (Div. 1 + Div. 2, combined)201+432101
    2018-03-04 17:35Codeforces Round 468 (Div. 1, based on Technocup 2018 Final Round)203+212058