Problems Search problems Easy Hard Intermediate Preparation Samples Unknown Algorithms Arrays Basic Programming Binary Search Bitwise Brute Force Combinatorics Conditionals Dynamic Programming Graphs Hash Tables Input/Output Linear Data Structures Loops Math Numeral Systems Recursion Samples Sorting Stack Strings Trees Uncategorized Hide solved Go « 1 2 3 4 » Problem Difficulty ▴ Tags Solution Points AC % Users Allocate Array Easy Loops 100p 43.3% 769 Biggest Prime Number Easy Loops 100p 30.5% 604 Max Sum of K elements Easy Arrays 100p 39.8% 563 Longest Sequence of Equal Easy Arrays Solution 100p 35.5% 597 Longest Increasing Sequence Easy Arrays Solution 100p 40.3% 529 Max Sum of Subsequence Easy Arrays 100p 46.7% 390 Most Frequent Easy Arrays 100p 26.5% 468 Sequence in Matrix Easy Arrays 100p 11.3% 228 Max sum of 3x3 Easy Arrays 100p 14.1% 268 Крачкомер Easy Math 100p 60.5% 663 Game Easy Conditionals, Math Solution 100p 33.0% 893 Парола Easy Math 100p 49.1% 554 Добри числа Easy Loops Solution 100p 52.5% 364 Тайно съобщение Easy Strings 100p 57.3% 484 Колби Easy Conditionals 100p 17.8% 270 Ранкове Easy Loops, Sorting Solution 100p 44.2% 309 Kitty Easy Arrays 100p 12.5% 222 Numbers From 1 to N Easy Loops 100p 62.9% 520 Not Divisable Number Easy Loops 100 69.1% 460 Min Max Sum Average Easy Loops 100p 21.9% 387 Print Deck Easy Loops 100p 42.9% 352 Calculate! Easy Loops 100p 31.3% 341 Calculate Again Easy Loops 100p 20.3% 352 Calculate 3 Easy Loops 100p 35.1% 269 Catalan Numbers Easy Loops 100p 28.9% 214 Matrix of Numbers Easy Loops 100p 72.0% 366 Odd or Even Product Easy Loops 100p 26.2% 303 Binary to Decimal Easy Loops, Numeral Systems 100p 69.8% 308 Decimal To Binary Easy Loops, Numeral Systems 100p 42.0% 263 Decimal To Hex Easy Loops, Numeral Systems 100p 48.9% 229 Hex to Decimal Easy Loops, Numeral Systems 100p 55.9% 218 GCD Easy Loops, Numeral Systems 100p 53.6% 279 Trailing Zeros in Factorial Easy Loops, Numeral Systems 100p 27.8% 196 Spiral Matrix Easy Loops, Numeral Systems Solution 100p 63.5% 336 Exchange if Greater Easy Conditionals 100p 27.6% 460 Bonus Score Easy Conditionals 100p 35.1% 483 Check for Play Card Easy Conditionals 100p 55.4% 429 Multiplication Sign Easy Conditionals 100p 35.6% 411 Int, Double, String Easy Conditionals 100p 33.0% 373 Say Hello Easy Input/Output 100p 42.1% 385 Get Largest Number Easy Loops 100p 48.6% 324 Appearance Count Easy Arrays, Loops 100p 57.1% 355 Largest Than Neighbours Easy Loops 100p 43.6% 285 First Largest Than Neighbors Easy Loops 100p 55.8% 278 Reverse Number Easy Loops 100p 59.8% 329 Adding Polynomials Easy Arrays, Math 100p 47.3% 190 Cartesian Coordinates Easy Conditionals 100p 24.3% 291 Tribonacci Easy Loops Solution 100p 14.1% 248 Cooking Easy Hash Tables 100p 9.9% 41 Miss Cat Easy Arrays 100p 26.3% 243 « 1 2 3 4 »