Problems Search problems Easy Hard Intermediate Preparation Samples Unknown Algorithms Arrays 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 45.4% 478 Biggest Prime Number Easy Loops 100p 28.9% 378 Max Sum of K elements Easy Arrays 100p 39.1% 334 Longest Sequence of Equal Easy Arrays 100p 35.1% 333 Longest Increasing Sequence Easy Arrays Solution 100p 39.4% 301 Max Sum of Subsequence Easy Arrays 100p 45.3% 229 Most Frequent Easy Arrays 100p 21.9% 262 Larges Area in Matrix Easy Arrays 100p 37.8% 126 Sequence in Matrix Easy Arrays 100p 17.0% 115 Max sum of 3x3 Easy Arrays 100p 12.4% 154 Крачкомер Easy Math 100p 59.8% 464 Game Easy Conditionals, Math Solution 100p 32.6% 554 Парола Easy Math 100p 54.7% 405 Добри числа Easy Loops Solution 100p 54.4% 231 Тайно съобщение Easy Strings 100p 52.1% 306 Колби Easy Conditionals 100p 19.0% 175 Ранкове Easy Loops, Sorting Solution 100p 43.6% 192 Kitty Easy Arrays 100p 15.2% 143 Numbers From 1 to N Easy Loops 100p 62.0% 333 Not Divisable Number Easy Loops 100 67.7% 280 Min Max Sum Average Easy Loops 100p 21.4% 233 Print Deck Easy Loops 100p 41.8% 208 Calculate! Easy Loops 100p 30.3% 203 Calculate Again Easy Loops 100p 21.2% 203 Calculate 3 Easy Loops 100p 30.9% 167 Catalan Numbers Easy Loops 100p 33.7% 140 Matrix of Numbers Easy Loops 100p 73.8% 222 Odd or Even Product Easy Loops 100p 24.9% 176 Binary to Decimal Easy Loops, Numeral Systems 100p 65.8% 183 Decimal To Binary Easy Loops, Numeral Systems 100p 42.8% 157 Decimal To Hex Easy Loops, Numeral Systems 100p 47.5% 135 Hex to Decimal Easy Loops, Numeral Systems 100p 52.9% 134 GCD Easy Loops, Numeral Systems 100p 55.6% 176 Trailing Zeros in Factorial Easy Loops, Numeral Systems 100p 28.5% 127 Spiral Matrix Easy Loops, Numeral Systems 100p 64.5% 162 Exchange if Greater Easy Conditionals 100p 25.0% 293 Bonus Score Easy Conditionals 100p 34.4% 321 Check for Play Card Easy Conditionals 100p 56.9% 282 Multiplication Sign Easy Conditionals 100p 34.1% 270 Biggest of Three Easy Conditionals 100p 31.5% 277 Biggest of Five Easy Conditionals 100p 31.4% 234 Sort Three Numbers Easy Conditionals 100p 33.5% 256 Digit as Word Easy Conditionals 100p 37.4% 270 Int, Double, String Easy Conditionals 100p 30.7% 232 Say Hello Easy Input/Output 100p 43.7% 215 Get Largest Number Easy Loops 100p 44.1% 194 Appearance Count Easy Arrays, Loops 100p 52.6% 210 Largest Than Neighbours Easy Loops 100p 40.8% 163 First Largest Than Neighbors Easy Loops 100p 55.4% 161 Reverse Number Easy Loops 100p 64.3% 178 « 1 2 3 4 »