Yandex School of Data Analysis algorithms

bad_rand

Abusing weakness of glibc's rand().

convex_hull

Construction of convex hull using Graham scan .

decoder

Solving of substitution cipher.

isomorphic_trees

Whether or not trees are isomorphic.

perfect_hash

Construct Perfect Hash Function from given set.

sqrt_countdown

Solving Josephus problem.

squares

Find equal subsquares in matrix.