Author: Ionut Paun

Challenge: Strongly Connected Digraphs Subdomeniu: Combinatorics (combinatorics) Scor cont: 120.0 / 120 Submission status: Accepted Submission score: 1.0 Submission ID: 464815861 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/strongly-connected-digraphs/problem Cerinta Count the number of [labeled strongly connected digraphs](http://en.wikipedia.org/wiki/Directed_graph) with the given number of

Challenge: String Modification Subdomeniu: Combinatorics (combinatorics) Scor cont: 150.0 / 150 Submission status: Accepted Submission score: 1.0 Submission ID: 464818299 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/string-modification/problem Cerinta Roy was given a string $s$ containing only uppercase English letters. He can do

Challenge: Sherlock and Pairs Subdomeniu: Combinatorics (combinatorics) Scor cont: 30.0 / 30 Submission status: Accepted Submission score: 1.0 Submission ID: 464726908 Limbaj: python3 Link challenge: https://www.hackerrank.com/challenges/sherlock-and-pairs/problem Cerinta Sherlock is given an array of $N$ integers ($A$_$0$, $A$_$1$ … $A$_$N-1$ by

Challenge: Sasha and Swaps Subdomeniu: Combinatorics (combinatorics) Scor cont: 100.0 / 100 Submission status: Accepted Submission score: 1.0 Submission ID: 464735862 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/sasha-and-swaps/problem Cerinta Little Sasha likes to swap elements in his array. Initially, he has an

Challenge: Robanukkah Tree Subdomeniu: Combinatorics (combinatorics) Scor cont: 90.0 / 90 Submission status: Accepted Submission score: 1.0 Submission ID: 464808448 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/r-tree-decoration/problem Cerinta Robot Bender is celebrating Robanukkah, the most important holiday for robots. He <s>stole</s> bought

Challenge: Powercode Subdomeniu: Combinatorics (combinatorics) Scor cont: 100.0 / 100 Submission status: Accepted Submission score: 1.0 Submission ID: 464813127 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/powercode/problem Cerinta The longer the code, the stronger the code. The power number (**P**) of a code

Challenge: Picking Cards Subdomeniu: Combinatorics (combinatorics) Scor cont: 50.0 / 50 Submission status: Accepted Submission score: 1.0 Submission ID: 464733887 Limbaj: java8 Link challenge: https://www.hackerrank.com/challenges/picking-cards/problem Cerinta There are N cards on the table and each has a number between 0

Challenge: Permutation Problem Subdomeniu: Combinatorics (combinatorics) Scor cont: 60.0 / 60 Submission status: Accepted Submission score: 1.0 Submission ID: 464734952 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/permutation-problem/problem Cerinta How many n-digit numbers (without leading zeros) are there such that no digit occurs

Challenge: Parity Party Subdomeniu: Combinatorics (combinatorics) Scor cont: 100.0 / 100 Submission status: Accepted Submission score: 1.0 Submission ID: 464814485 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/parity-party/problem Cerinta We need your help to divide candies at a very unusual party! There are

Challenge: Number List Subdomeniu: Combinatorics (combinatorics) Scor cont: 50.0 / 50 Submission status: Accepted Submission score: 1.0 Submission ID: 464736389 Limbaj: cpp14 Link challenge: https://www.hackerrank.com/challenges/number-list/problem Cerinta Sam is playing with an array, $A$, of $N$ positive integers. Sam writes a