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sonhv3112

Open on Codeforces · Unique solved

Rating2118· 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
39
Unique solved
374
Submissions (all)
973
Years with activity
2018–2021

Solved by problem rating

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

  • Unrated31
  • 800–89922
  • 900–99910
  • 1000–109919
  • 1100–119911
  • 1200–129923
  • 1300–139919

Solved by topic

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

  • greedy127
  • math108
  • implementation92
  • dp84
  • constructive algorithms64
  • data structures56
  • brute force

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2020-05-01 17:05Codeforces Round 638 (Div. 2)166+682118
2020-04-26 16:35Educational Codeforces Round 86 (Rated for Div. 2)1071-342050
2020-04-15 17:05Codeforces Round 635 (Div. 1)387+882084
2020-04-12 16:05Codeforces Round 633 (Div. 1)651+391996
2020-04-10 16:35Educational Codeforces Round 85 (Rated for Div. 2)
1400–1499
10
  • 1500–159915
  • 1600–169920
  • 1700–179920
  • 1800–189928
  • 1900–199926
  • 2000–209916
  • 2100–219923
  • 2200–229926
  • 2300–239913
  • 2400–249915
  • 2500–259910
  • 2600–26993
  • 2700–27994
  • 2800–28994
  • 3000–30994
  • 3200–32991
  • 3400–34991
  • 52
  • sortings50
  • binary search45
  • dfs and similar33
  • strings31
  • trees29
  • graphs28
  • number theory28
  • two pointers27
  • bitmasks27
  • combinatorics22
  • divide and conquer13
  • dsu12
  • hashing10
  • shortest paths8
  • matrices8
  • geometry7
  • string suffix structures5
  • interactive5
  • *special4
  • ternary search4
  • probabilities3
  • Other (5 tags)7
  • 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.

    2019

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 28/day in 2018)

    2019

    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 17/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 28/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 4/day in 2021)

    1239
    -19
    1957
    2020-03-31 16:05Codeforces Round 630 (Div. 2)269+901976
    2020-03-19 17:05Codeforces Global Round 71193+391886
    2019-11-27 15:50Educational Codeforces Round 77 (Rated for Div. 2)543+241847
    2019-07-22 16:35Educational Codeforces Round 69 (Rated for Div. 2)351+691823
    2019-06-30 16:45Educational Codeforces Round 67 (Rated for Div. 2)992-161754
    2019-06-16 11:35Codeforces Round 567 (Div. 2)1451-631770
    2019-06-03 16:05Codeforces Round 563 (Div. 2)283+711833