Problems

1 – 22 of 22

Problem Title Likes Solvers Difficulty

Problem 43179. Red and green towers

Created by: Giovanni Mottola

Tags arithmetic, number theory

Problem 43969. Sleeping Queens 1

Created by: James

Tags too late for card games 1, christmas gifts, kids stuff

Problem 1854. Factorial: Unlimited Size : java.math

Created by: Richard Zapor

Tags factorial, java, bigdecimal

Problem 2650. Kurchan 4x4 - Optimal score

Created by: James

Tags kurchan, 4x4 matrix

Problem 2652. Kurchan 5x5 - Optimal Score

Created by: James

Tags contest, kurchan, 5x5 matrix

Problem 160. So many choices

Created by: the cyclist

Tags choose, basic matlab, basics

408

Problem 43091. Maximum sum from any 2 numbers with a variable number of inputs

Created by: Jamil Kasan

Tags sum, variable input

Problem 42920. Find the inverse permutation

Created by: Jens Kjærgaard Boldsen

Tags math, vector

Problem 1634. Kurchan Square - Evaluation Function

Created by: Richard Zapor

Tags matrix, contest, det

Problem 44456. Sum of combinations

Created by: Pramit Biswas

Tags sum

Problem 1646. Kurchan 3x3 - Optimal Score

Created by: Richard Zapor

Tags contest, toc, randperm

Problem 42790. Full combinations

Created by: Peng Liu

Tags combination, ff2n, fullfact

Problem 44082. Recycled Numbers (CodeJam Qualification Round 2012)

Created by: Jean-Marie Sainthillier

Tags gjam, codejam

Problem 44719. Penny Distribution Machine

Created by: J. S. Kowontan

Tags distribution machine

Problem 44747. Exponents in Factorials

Created by: James

Tags exponents, factorials, excited!

Problem 44782. Highest powers in factorials

Created by: James

Tags powers, factorials, excited!

Problem 44787. What can you get for exactly amount of money(harder)

Created by: li haitao

Tags combinatorics, search, knapsack problem

Problem 1941. Lowest sum from a group of digits

Created by: James

Tags third grade math, smallest sum

Problem 42918. Addition Partition

Created by: James

Tags partitions

Problem 2488. Create all combinations of vectors

Created by: Abdullah Caliskan

Tags vector, nnet

Problem 42615. Factorizing a number into a given number of factors

Created by: HH

Tags probability

Problem 986. Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration

Created by: Everett Rubel

Tags permutations, reverse, flip

1 – 22 of 22

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 43179. Red and green towers

Problem 43969. Sleeping Queens 1

Problem 1854. Factorial: Unlimited Size : java.math

Problem 2650. Kurchan 4x4 - Optimal score

Problem 2652. Kurchan 5x5 - Optimal Score

Problem 160. So many choices

Problem 43091. Maximum sum from any 2 numbers with a variable number of inputs

Problem 42920. Find the inverse permutation

Problem 1634. Kurchan Square - Evaluation Function

Problem 44456. Sum of combinations

Problem 1646. Kurchan 3x3 - Optimal Score

Problem 42790. Full combinations

Problem 44082. Recycled Numbers (CodeJam Qualification Round 2012)

Problem 44719. Penny Distribution Machine

Problem 44747. Exponents in Factorials

Problem 44782. Highest powers in factorials

Problem 44787. What can you get for exactly amount of money(harder)

Problem 1941. Lowest sum from a group of digits

Problem 42918. Addition Partition

Problem 2488. Create all combinations of vectors

Problem 42615. Factorizing a number into a given number of factors

Problem 986. Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration