An easy chess problem P12200


Statement
 

pdf   zip

thehtml

You are given a chessboard, a white piece and a black piece. Each piece can be a king, a ‍queen, a rook, a bishop, or a knight. In how many ways can you place the two pieces so that no piece threatens the other piece? For instance, these are three of the 3612 ways to place two kings on the board:

smallboard, showmover=false, label=false, maxfield=h8, setpieces=ka1,Kb3 smallboard, showmover=false, label=false, maxfield=h8, setpieces=Ka1,kb3 smallboard, showmover=false, label=false, maxfield=h8, setpieces=Kd5,kh7

Input

Input consists of several cases, each one with two chars to indicate the pieces: ‘K’ for a king, ‘Q’ for a queen, ‘R’ for a rook, ‘B’ for a bishop, and ‘N’ for a knight.

Output

For every case, print the number of ways the place the given pieces on the board.

Public test cases

  • Input

    K K
R B
Q N

    Output

    3612
2576
2240
    • Information
    Author
    Enrique Jiménez
    Language
    English
    Official solutions
    C++
    User solutions
    C++