Input file:  Standard input  Time limit:  1 sec  
Output file:  Standard output  Memory limit:  512 Mb 
A pawn is located on a chess board at coordinates x, y (x is a column number, y is a row number).
You must write a program to determine maximum number of rooks which can be placed on this board so that not a one of them will attack another.
Input contains integers x and y.
Output must contain a single integer — maximum number of rooks.
1 ≤ x, y ≤ 8
No.  Standard input  Standard output 

1 

