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European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
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2-sat
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dfs and similar
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dp
dsu
expression parsing
fft
flows
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geometry
graph matchings
graphs
greedy
hashing
implementation
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Problems
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Name
1234A
Equalize Prices Again
math
800
x28263
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x21969
1228A
Distinct Digits
brute force
,
implementation
800
x22108
1225A
Forgetting Things
math
900
x16035
1223A
CME
math
800
x21771
1220A
Cards
implementation
,
sortings
,
strings
800
x30684
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18722
1216A
Prefixes
strings
800
x18874
1213A
Chips Moving
math
900
x24477
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x12408
1208A
XORinacci
math
900
x17074
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x22339
1206B
Make Product Equal One
dp
,
implementation
900
x27536
1206A
Choose Two Numbers
math
,
sortings
800
x25052
1204B
Mislove Has Lost an Array
greedy
,
math
900
x17695
1201A
Important Exam
implementation
,
strings
900
x16007
1200A
Hotelier
brute force
,
data structures
,
implementation
800
x20677
1197A
DIY Wooden Ladder
greedy
,
math
,
sortings
900
x13667
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x28240
1194A
Remove a Progression
math
800
x16630
1191A
Tokitsukaze and Enhancement
brute force
800
x18374
1189A
Keanu Reeves
strings
800
x15474
1187A
Stickers and Toys
math
900
x15007
1186A
Vus the Cossack and a Contest
implementation
800
x39029
1185A
Ropewalkers
math
800
x15030
1183B
Equalize Prices
math
900
x18799
1183A
Nearest Interesting Number
implementation
800
x25466
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x25920
1178A
Prime Minister
greedy
800
x10603
1176A
Divide it!
brute force
,
greedy
,
implementation
800
x23549
1175A
From Hero to Zero
implementation
,
math
900
x18591
1173A
Nauuo and Votes
greedy
800
x16361
1169A
Circle Metro
implementation
,
math
900
x12219
1167A
Telephone Number
brute force
,
greedy
,
strings
800
x19597
1166A
Silent Classroom
combinatorics
,
greedy
900
x14502
1163A
Eating Soup
greedy
,
math
900
x13210
1162A
Zoning Restrictions Again
implementation
800
x8372
1159A
A pile of stones
implementation
,
math
800
x12875
1154A
Restoring Three Numbers
math
800
x74965
1152A
Neko Finds Grapes
greedy
,
implementation
,
math
800
x15477
1150B
Tiling Challenge
greedy
,
implementation
900
x11422
1150A
Stock Arbitraging
greedy
,
implementation
800
x11990
1148A
Another One Bites The Dust
greedy
800
x15048
1146A
Love "A"
implementation
,
strings
800
x22380
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x17597
1144A
Diverse Strings
implementation
,
strings
800
x19610
1143A
The Doors
implementation
800
x13363
1141B
Maximal Continuous Rest
implementation
900
x21774
1139A
Even Substrings
implementation
,
strings
800
x16955
1138A
Sushi for Two
binary search
,
greedy
,
implementation
900
x19240
1136A
Nastya Is Reading a Book
implementation
800
x16589
1132B
Discounts
greedy
,
sortings
900
x13216
1131A
Sea Battle
math
800
x12551
1130A
Be Positive
implementation
800
x11782
1118A
Water Buying
math
800
x20412
1114A
Got Any Grapes?
brute force
,
greedy
,
implementation
800
x19024
1113A
Sasha and His Trip
dp
,
greedy
,
math
900
x17556
1110A
Parity
math
900
x15263
1108A
Two distinct points
implementation
800
x22212
1107A
Digits Sequence Dividing
greedy
,
strings
900
x12171
1106C
Lunar New Year and Number Division
greedy
,
implementation
,
math
,
sortings
900
x14926
1106A
Lunar New Year and Cross Counting
implementation
800
x12481
1104A
Splitting into digits
constructive algorithms
,
implementation
,
math
800
x15543
1102A
Integer Sequence Dividing
math
800
x25048
1099A
Snowball
implementation
800
x13032
1097A
Gennady and a Card Game
brute force
,
implementation
800
x40170
1096A
Find Divisible
greedy
,
implementation
,
math
800
x19034
1095B
Array Stabilization
implementation
900
x22602
1095A
Repeating Cipher
implementation
800
x33144
1093B
Letters Rearranging
constructive algorithms
,
greedy
,
sortings
,
strings
900
x16863
1093A
Dice Rolling
math
800
x17856
1092B
Teams Forming
sortings
800
x27037
1092A
Uniform String
implementation
800
x16483
1091A
New Year and the Christmas Ornament
brute force
,
implementation
,
math
800
x17901
1089L
Lazyland
900
x4140
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x17122
1085A
Right-Left Cipher
implementation
,
strings
800
x12295
1081A
Definite Game
constructive algorithms
,
math
800
x12260
1080B
Margarite and the best present
math
900
x11993
1080A
Petya and Origami
math
800
x18424
1077A
Frog Jumping
math
800
x30688
1075A
The King's Race
implementation
,
math
800
x8659
1065A
Vasya and Chocolate
implementation
,
math
800
x14789
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x22973
1061A
Coins
greedy
,
implementation
,
math
800
x22417
1060A
Phone Numbers
brute force
800
x14573
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x6340
1056A
Determine Line
implementation
800
x6857
1055A
Metro
graphs
900
x11102
1054A
Elevator or Stairs?
implementation
800
x9156
1047B
Cover Points
geometry
,
math
900
x17478
1047A
Little C Loves 3 I
math
800
x20324
1043A
Elections
implementation
,
math
800
x10892
1041A
Heist
greedy
,
implementation
,
sortings
800
x25540
1038A
Equality
implementation
,
strings
800
x15091
1032A
Kitchen Utensils
900
x6939
1031A
Golden Plate
implementation
,
math
800
x13033
1030A
In Search of an Easy Problem
implementation
800
x142647
1028A
Find Square
implementation
800
x11020
1025A
Doggo Recoloring
implementation
,
sortings
900
x15429
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