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Top rated · Stats

_Ch1F4N_

Open on Codeforces · Unique solved

Rating2376· 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
43
Unique solved
856
Submissions (all)
3,045
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated100
  • 800–89962
  • 900–99915
  • 1000–109910
  • 1100–119917
  • 1200–129917
  • 1300–139923

Solved by topic

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

  • greedy294
  • dp247
  • math233
  • data structures221
  • constructive algorithms166
  • brute force143
  • implementation

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)81+1402376
2025-11-16 16:35Codeforces Round 1064 (Div. 1)644-922236
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)189+712328
2025-09-24 14:50Codeforces Round 1053 (Div. 1)399-72257
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)
1400–1499
20
  • 1500–159912
  • 1600–169918
  • 1700–179917
  • 1800–189927
  • 1900–199940
  • 2000–209939
  • 2100–219939
  • 2200–229950
  • 2300–239959
  • 2400–249957
  • 2500–259940
  • 2600–269949
  • 2700–279939
  • 2800–289927
  • 2900–299920
  • 3000–309918
  • 3100–319914
  • 3200–32996
  • 3300–339910
  • 3400–34995
  • 3500–35996
  • 131
  • graphs129
  • trees126
  • dfs and similar120
  • binary search113
  • sortings93
  • combinatorics93
  • bitmasks78
  • number theory67
  • strings58
  • two pointers56
  • divide and conquer50
  • dsu46
  • hashing40
  • probabilities33
  • games29
  • interactive27
  • string suffix structures24
  • shortest paths21
  • geometry13
  • matrices13
  • flows11
  • Other (7 tags)36
  • 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
    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.

    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 24/day in 2022)

    2023

    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 36/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 63/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 53/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 12/day in 2026)

    77
    +201
    2264
    2025-07-31 17:35Codeforces Round 1040 (Div. 1)680-372063
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)1790-1042100
    2024-10-14 16:35Educational Codeforces Round 170 (Rated for Div. 2)19+1522204
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)736+382052
    2024-08-10 16:35Codeforces Round 965 (Div. 2)82+1412014
    2024-08-04 16:35Codeforces Round 963 (Div. 2)184+1411873
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)4043-661732