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International_River

Open on Codeforces · Unique solved

Rating2264· 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
45
Unique solved
678
Submissions (all)
1,757
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.

  • Unrated264
  • 800–89975
  • 900–99921
  • 1000–109918
  • 1100–119924
  • 1200–129929
  • 1300–139921

Solved by topic

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

  • greedy204
  • math170
  • implementation125
  • brute force115
  • constructive algorithms101
  • data structures87

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
2026-01-29 17:35Codeforces Round 1077 (Div. 1)141+902264
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)342+552174
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)694+62119
2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)451+882113
2024-12-28 17:35Good Bye 2024: 2025 is NEAR
1400–1499
19
  • 1500–159918
  • 1600–169918
  • 1700–179923
  • 1800–189922
  • 1900–199929
  • 2000–209922
  • 2100–219913
  • 2200–229911
  • 2300–239913
  • 2400–249916
  • 2500–25997
  • 2600–26994
  • 2700–27995
  • 2800–28992
  • 2900–29992
  • 3000–30991
  • 3200–32991
  • dp
    83
  • sortings68
  • binary search67
  • strings50
  • dfs and similar48
  • bitmasks47
  • number theory46
  • graphs45
  • two pointers42
  • trees38
  • combinatorics29
  • dsu21
  • games14
  • hashing13
  • interactive12
  • geometry11
  • shortest paths11
  • divide and conquer11
  • *special9
  • string suffix structures8
  • ternary search5
  • probabilities5
  • Other (9 tags)17
  • 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 17/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 27/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 30/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 21/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 23/day in 2026)

    934
    +31
    2025
    2024-12-24 16:35Educational Codeforces Round 173 (Rated for Div. 2)122+1011994
    2024-12-19 17:35Codeforces Global Round 282776-921893
    2024-09-27 16:05Codeforces Round 975 (Div. 1)745-11985
    2024-06-27 16:35Educational Codeforces Round 167 (Rated for Div. 2)146+971986
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)763+41889
    2024-06-06 16:35Codeforces Round 951 (Div. 2)402+611885
    2024-03-16 17:00Codeforces Round 934 (Div. 1)1099-931824