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spike1236

Open on Codeforces · Unique solved

Rating2327· International 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
92
Unique solved
943
Submissions (all)
3,411
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.

  • Unrated200
  • 800–899148
  • 900–99950
  • 1000–109954
  • 1100–119943
  • 1200–129952
  • 1300–139946

Solved by topic

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

  • math311
  • greedy292
  • implementation249
  • brute force163
  • constructive algorithms139
  • dp121
  • data structures

Rating changes

2019

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

2019

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)58+1422327
2025-12-06 10:15Codeforces Round 1069 (Div. 1)259+342185
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)702-232151
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)394+532174
2025-03-10 17:15Codeforces Round 1008 (Div. 1)
1400–1499
35
  • 1500–159943
  • 1600–169953
  • 1700–179933
  • 1800–189934
  • 1900–199930
  • 2000–209920
  • 2100–219917
  • 2200–229924
  • 2300–239913
  • 2400–249914
  • 2500–259914
  • 2600–26996
  • 2700–27995
  • 2800–28993
  • 3000–30992
  • 3100–31991
  • 3400–34992
  • 3500–35991
  • 107
  • sortings102
  • binary search76
  • number theory76
  • strings59
  • two pointers56
  • dfs and similar55
  • graphs54
  • trees44
  • bitmasks37
  • *special33
  • combinatorics31
  • divide and conquer23
  • shortest paths19
  • dsu18
  • games17
  • geometry13
  • interactive11
  • ternary search8
  • graph matchings7
  • matrices7
  • probabilities5
  • Other (9 tags)18
  • Jun
    Jul
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    Sep
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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
    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.

    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
    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
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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.

    2024

    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.

    2025

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

    Jan
    Feb
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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.

    2026

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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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
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    LessMore (max 29/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 28/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 54/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 35/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 27/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 25/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    Sep
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    LessMore (max 109/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 40/day in 2026)

    306
    +74
    2121
    2025-02-28 16:50Codeforces Round 1007 (Div. 2)104+982047
    2025-02-18 16:35Educational Codeforces Round 174 (Rated for Div. 2)507+131949
    2025-02-16 16:35Codeforces Round 1005 (Div. 2)422+401936
    2025-02-02 16:35Codeforces Round 1002 (Div. 2)1301-291896
    2023-03-18 14:20Codeforces Round 858 (Div. 2)229+601925
    2023-03-09 12:35Codeforces Round 857 (Div. 2)188+451865
    2023-02-12 10:35Codeforces Round 852 (Div. 2)585+271820