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 44.4% 676 Biggest Prime Number Easy Loops 100p 30.2% 538 Max Sum of K elements Easy Arrays 100p 39.8% 498 Longest Sequence of Equal Easy Arrays Solution 100p 36.2% 525 Longest Increasing Sequence Easy Arrays Solution 100p 40.1% 467 Max Sum of Subsequence Easy Arrays 100p 46.0% 351 Most Frequent Easy Arrays 100p 25.8% 419 Sequence in Matrix Easy Arrays 100p 13.5% 202 Max sum of 3x3 Easy Arrays 100p 13.3% 242 Крачкомер Easy Math 100p 59.7% 612 Game Easy Conditionals, Math Solution 100p 33.0% 779 Парола Easy Math 100p 49.7% 516 Добри числа Easy Loops Solution 100p 53.0% 321 Тайно съобщение Easy Strings 100p 55.4% 436 Колби Easy Conditionals 100p 17.7% 247 Ранкове Easy Loops, Sorting Solution 100p 44.1% 279 Kitty Easy Arrays 100p 12.7% 202 Numbers From 1 to N Easy Loops 100p 62.9% 476 Not Divisable Number Easy Loops 100 68.7% 404 Min Max Sum Average Easy Loops 100p 22.2% 348 Print Deck Easy Loops 100p 41.4% 317 Calculate! Easy Loops 100p 30.8% 309 Calculate Again Easy Loops 100p 20.0% 317 Calculate 3 Easy Loops 100p 34.8% 246 Catalan Numbers Easy Loops 100p 30.6% 201 Matrix of Numbers Easy Loops 100p 71.5% 335 Odd or Even Product Easy Loops 100p 26.5% 279 Binary to Decimal Easy Loops, Numeral Systems 100p 69.8% 279 Decimal To Binary Easy Loops, Numeral Systems 100p 41.5% 240 Decimal To Hex Easy Loops, Numeral Systems 100p 48.5% 209 Hex to Decimal Easy Loops, Numeral Systems 100p 57.0% 201 GCD Easy Loops, Numeral Systems 100p 53.9% 259 Trailing Zeros in Factorial Easy Loops, Numeral Systems 100p 28.3% 186 Spiral Matrix Easy Loops, Numeral Systems Solution 100p 63.2% 290 Exchange if Greater Easy Conditionals 100p 27.2% 419 Bonus Score Easy Conditionals 100p 34.4% 447 Check for Play Card Easy Conditionals 100p 55.4% 398 Multiplication Sign Easy Conditionals 100p 34.7% 375 Int, Double, String Easy Conditionals 100p 32.7% 345 Say Hello Easy Input/Output 100p 42.3% 344 Get Largest Number Easy Loops 100p 48.4% 297 Appearance Count Easy Arrays, Loops 100p 55.1% 320 Largest Than Neighbours Easy Loops 100p 42.7% 261 First Largest Than Neighbors Easy Loops 100p 54.9% 257 Reverse Number Easy Loops 100p 59.1% 296 Adding Polynomials Easy Arrays, Math 100p 47.6% 179 Cartesian Coordinates Easy Conditionals 100p 24.2% 269 Tribonacci Easy Loops Solution 100p 14.2% 225 Cooking Easy Hash Tables 100p 10.3% 39 Miss Cat Easy Arrays 100p 26.9% 226 « 1 2 3 4 »