const n=10.
const m=10.
const r=16.


room(0,1,1,1,4). has(0,-1).
room(1,2,1,4,2). has(1,3).
room(2,5,1,7,2). has(2,-1).
room(3,8,1,9,2). has(3,2). 
room(4,10,1,10,2). has(4,-1).
room(5,2,3,4,5). has(5,3).
room(6,5,3,6,8). has(6,-1).
room(7,7,3,9,5). has(7,2).
room(8,10,3,10,6). has(8,1). 
room(9,2,6,4,8). has(9,4).
room(10,7,6,9,8). has(10,1).
room(11,1,9,3,10). has(11,2).
room(12,4,9,6,10). has(12,2).
room(13,7,9,9,10). has(13,0).
room(14,1,5,1,8). has(14,-1).
room(15,10,7,10,10). has(15,-1).
