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Tang2

Open on Codeforces · Unique solved

Rating2192· 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
43
Unique solved
1,788
Submissions (all)
3,168
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated270
  • 800–899368
  • 900–99984
  • 1000–109987
  • 1100–1199112
  • 1200–1299101
  • 1300–1399101

Solved by topic

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

  • greedy752
  • math655
  • implementation464
  • constructive algorithms426
  • brute force334
  • dp262
  • sortings

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-07 17:35Hello 2026244+1092192
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)223+252083
2025-12-27 17:35Good Bye 2025807+332058
2025-10-19 16:35Codeforces Round 1060 (Div. 2)359+82025
2024-07-07 16:50Codeforces Round 956 (Div. 2) and ByteRace 202497
1400–1499
95
  • 1500–159989
  • 1600–169987
  • 1700–1799105
  • 1800–189973
  • 1900–199979
  • 2000–209963
  • 2100–219935
  • 2200–229923
  • 2300–23997
  • 2400–24994
  • 2500–25993
  • 2600–26992
  • 243
  • data structures217
  • binary search178
  • number theory147
  • strings133
  • two pointers113
  • bitmasks97
  • graphs92
  • dfs and similar90
  • combinatorics73
  • trees68
  • games42
  • dsu36
  • interactive32
  • geometry29
  • shortest paths27
  • divide and conquer20
  • hashing17
  • flows10
  • probabilities9
  • ternary search7
  • 2-sat6
  • Other (7 tags)23
  • 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 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 53/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 30/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 21/day in 2026)

    +121
    2017
    2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)1278+31896
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)1098-261893
    2024-05-17 16:35Codeforces Round 945 (Div. 2)418+391919
    2024-02-15 16:35Codeforces Round 926 (Div. 2)375+661880
    2024-01-18 16:35Educational Codeforces Round 161 (Rated for Div. 2)559+511814
    2023-12-30 16:50Good Bye 20231864+451763
    2023-12-23 17:35Pinely Round 3 (Div. 1 + Div. 2)2122-131718