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Top rated · Stats

Nikrien

Open on Codeforces · Unique solved

Rating2426· 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
33
Unique solved
610
Submissions (all)
1,494
Years with activity
2025–2026

Solved by problem rating

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

  • Unrated279
  • 800–89997
  • 900–99916
  • 1000–109919
  • 1100–119924
  • 1200–129918
  • 1300–139918

Solved by topic

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

  • greedy163
  • math162
  • implementation91
  • constructive algorithms77
  • dp74
  • brute force70
  • binary search

Rating changes

2025

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2025

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)256-102426
2026-04-13 16:35Codeforces Round 1093 (Div. 1)69+1052436
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)58+1802331
2026-02-26 17:05Codeforces Round 1083 (Div. 2)134+262151
2026-02-25 16:35Educational Codeforces Round 187 (Rated for Div. 2)
1400–1499
16
  • 1500–159916
  • 1600–16999
  • 1700–17999
  • 1800–189920
  • 1900–199912
  • 2000–209910
  • 2100–21995
  • 2200–22999
  • 2300–23992
  • 2400–24996
  • 2500–25995
  • 2600–26994
  • 2700–27991
  • 2800–28995
  • 2900–29992
  • 3000–30992
  • 3100–31991
  • 3200–32991
  • 3300–33991
  • 3500–35993
  • 44
  • data structures43
  • sortings43
  • number theory38
  • bitmasks34
  • strings32
  • combinatorics26
  • *special26
  • graphs19
  • interactive18
  • two pointers17
  • dfs and similar16
  • games16
  • trees14
  • geometry14
  • divide and conquer10
  • probabilities9
  • dsu8
  • hashing4
  • graph matchings3
  • shortest paths3
  • ternary search3
  • Other (5 tags)9
  • 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 40/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 50/day in 2026)

    67
    +94
    2125
    2026-02-23 17:05Codeforces Round 1082 (Div. 1)304+982031
    2026-02-21 16:35Codeforces Round 1081 (Div. 2)851-311933
    2026-02-11 17:35Codeforces Round 1079 (Div. 1)581-101964
    2026-02-08 11:05Codeforces Round 1078 (Div. 2)144+831974
    2026-01-29 17:35Codeforces Round 1077 (Div. 2)320+511891
    2026-01-23 16:35Codeforces Round 1075 (Div. 2)1451-341840
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)4619-1401874