Problem name   In short  Forum 
A. Phalanx 

Arrangements of castles on the checkered board 

B. Bitsorting 

The Kth number of newly sorted integers 

C. Cubes 

A square of cubes if one cube is lost 

D. Factorial 

Find K successive digits in N! 

E. Lights 

Color of the point, illuminated by lights 

F. Parliament 

Split the insulted deputies into few groups 

G. Strange Numbers 

The quantity of strange numbers within L to R 

H. Two Captains 

Find the number of arrangements of the sailors 

I. Boundary Troops 

Distribute solders to greatest number of squads 

J. Wedding 

K guests out of N with M pairs of familiars 

K. Nice Floor 

Lay the square floor with the pieces 
