RACSODFACFGOperations: Reg, CFPDAReductions: K, WP, CFG, NP, SATANTLR: lexical, syntacticExams  log in, register, become guest 
n: intThe input is $n$, the size of the board, as well as the number of queens to place in it.
chessboard: array of array of intThe output consists of a twodimensional array simulating the board. It should have size $n\times n$. The position $(i,j)$ should contain a $1$ if a queen is placed there, or a $0$ otherwise. The rows and columns are identified by a number between $0$ and $n1$.
