Codeforces

Daily Grind

Friday July 10, 2026
History Global Board
Today's Problem
Constructive 1700

2201B · Recollect Numbers

constructive algorithms
Open on Codeforces →
Today's Results
🥇
🏔️Tomas
12:01 1 attempt ▾
#TimeVerdictLanguageRuntimeMemory
1 12:01 Accepted C++23 (GCC 14-64, msys2) 62 ms —
—
⭐Niklas
not yet
—
Simeon
not yet
—
🌺Darian
not yet
—
🌊Louis
not yet
—
🌊Jonas
not yet
—
🎮Vasushmasu
not yet
—
😈KillerBunny
not yet
—
Kent
not yet
—
E-Mail
not yet
—
Julius
not yet
—
🌛Mark
not yet
Leaderboard
1
🏔️Tomas
🔥 11-day streak · avg 12h 45m
41 / 64
64.1%
2
🌊Jonas
No streak · avg 5m 21s
55 / 64
85.9%
3
😈KillerBunny
No streak · avg 2h 28m
41 / 64
64.1%
4
🌊Louis
No streak · avg 50m 37s
39 / 64
60.9%
5
🌺Darian
No streak · avg 6m 56s
30 / 64
46.9%
6
⭐Niklas
No streak · avg 2h 23m
24 / 64
37.5%
7
Simeon
No streak · avg 4m 25s
21 / 64
32.8%
8
🌛Mark
No streak · avg 20m 39s
8 / 64
12.5%
9
E-Mail
No streak · avg 1m 15s
5 / 64
7.8%
10
🎮Vasushmasu
No streak · avg 3h 14m
1 / 64
1.6%
11
Kent
No streak · avg 0s
1 / 64
1.6%
12
Julius
No streak · avg 13m 11s
1 / 64
1.6%
Analytics

Solve time per problem (seconds)

Failed submissions per problem

Recent History Full history →
DateProblemDifficultySet ⭐NiklasSimeon🏔️Tomas🌺Darian🌊Louis🌊Jonas🎮Vasushmasu😈KillerBunnyKentE-MailJulius🌛Mark
2026-07-10 2201B Recollect Numbers 1700 Constructive ○ ○ ✓ ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-07-09 2200E Divisive Battle 1500 Math ○ ○ ✓5 ○ ○ ○ ○ ○ ○ ○ ○ ○
2026-07-08 1730B Meeting on the Line 1600 Techniques ✓ ○ ✓7 ○ ✓ ✓3 ○ ✓ ○ ○ ○ ○
2026-07-07 2172F Cluster Computing System 1600 Graphs & Trees ○ ○ ✓2 ○ ○ ✓ ○ ✓5 ○ ○ ○ ○
2026-07-06 2140C Ultimate Value 1500 Data Structures ○ ✓ ✓5 ○ ○ ✓3 ○ ✓3 ○ ○ ○ ○
2026-07-05 1741E Sending a Sequence Over the Network 1600 Dynamic Programming ○ ○ ✓2 ○ ○ ✓ ○ ✓2 ○ ○ ○ ○
2026-07-04 2181M Medical Parity 1700 Strings ○ ○ ✓ ○ ○ ✓ ○ ✓ ○ ○ ○ ○
2026-07-03 2194D Table Cut 1600 Constructive ○ ○ ✓ ○ ✓2 ✓2 ○ ✓3 ○ ○ ○ ○
2026-07-02 1305C Kuroni and Impossible Calculation 1600 Math ✓ ○ ✓2 ✓2 ✓ ✓3 ○ ✓ ○ ○ ○ ○
2026-07-01 1542B Plus and Multiply 1500 Techniques ✓4 ○ ✓3 ○ ✓2 ✓ ○ ✓2 ○ ○ ○ ○
2026-06-30 2195E Idiot First Search 1500 Graphs & Trees ○ ○ ✓2 ✓ ○ ✓ ○ ✓2 ○ ○ ○ ○
2026-06-29 2149E Hidden Knowledge of the Ancients 1500 Data Structures ○ ✓2 ○ ○ ○ ✓4 ○ ✓8 ○ ○ ○ ○
2026-06-28 1498C Planar Reflections 1600 Dynamic Programming ○ ○ ○ ○ ○ ✓2 ○ ✓2 ○ ○ ○ ○
2026-06-27 2145C Monocarp's String 1300 Strings ○ ○ ○ ○ ○ ✓3 ○ ✓3 ○ ○ ○ ○
2026-06-26 2183D1 Tree Coloring (Easy Version) 1500 Constructive ○ ○ ○ ○ ○ ○ ○ ✓3 ○ ○ ○ ○
2026-06-25 1349A Orac and LCM 1600 Math ○ ○ ○ ○ ✓3 ✓3 ○ ✓3 ○ ○ ○ ○
2026-06-24 1610C Keshi Is Throwing a Party 1600 Techniques ○ ○ ○ ○ ○ ○ ○ ✓ ○ ○ ○ ○
2026-06-23 2218F The 67th Tree Problem 1500 Graphs & Trees ○ ○ ✓ ○ ✓2 ✓ ○ ✓ ○ ○ ○ ○
2026-06-22 380C Sereja and Brackets 2000 Data Structures ✓ ○ ✓ ○ ✓4 ✓ ○ ○ ○ ○ ○ ○
2026-06-21 1528A Parsa's Humongous Tree 1600 Dynamic Programming ✓ ○ ✓2 ○ ✓3 ✓2 ○ ○ ○ ○ ○ ○
2026-06-20 2149D A and B 1200 Strings ○ ○ ✓2 ○ ✓3 ✓ ○ ✓2 ○ ○ ○ ○
2026-06-19 2153C Symmetrical Polygons 1500 Constructive ○ ○ ○ ○ ○ ✓ ○ ○ ○ ○ ○ ○
2026-06-18 1407C Chocolate Bunny 1600 Math ○ ○ ○ ○ ○ ✓2 ○ ✓ ○ ○ ○ ○
2026-06-17 1698D Fixed Point Guessing 1600 Techniques ○ ○ ✓ ○ ○ ✓2 ○ ○ ○ ○ ○ ○
2026-06-16 1337C Problem 1337C — Graphs & Trees ✓2 ○ ✓3 ○ ○ ✓ ○ ○ ○ ○ ○ ○
2026-06-15 459D Pashmak and Parmida's problem 1800 Data Structures ✓ ○ ✓4 ○ ○ ✓ ○ ○ ○ ○ ○ ○
2026-06-14 1826D Running Miles 1700 Dynamic Programming ○ ○ ✓ ○ ○ ○ ○ ✓2 ○ ○ ○ ○
2026-06-13 1537E1 Erase and Extend (Easy Version) 1600 Strings ○ ○ ○ ✓2 ✓2 ○ ○ ✓2 ○ ○ ○ ○
2026-06-12 2157C Meximum Array 2 1400 Constructive ○ ○ ○ ✓ ○ ✓ ○ ✓ ○ ○ ○ ○
2026-06-11 1795D Triangle Coloring 1600 Math ○ ○ ○ ✓ ✓ ✓2 ○ ✓ ○ ○ ○ ○