DFS程序：constmaxm=50;maxn=50;varm,n,x1,y1,x2,y2:integer;i,j,k,x,y:integer;map:array[-2..maxm+2,-2..maxn+2] of extended;beginfillchar(map,sizeof(map),0);readln(m,n,x1,y1,x2,y2);map[x1,y1]:=1;for i:=x1+1 to x2 dofor j:=1 to m do
map[i,j]:=map[i-1,j-2]+map[i-1,j+2]+map[i-2,j-1]+map[i-2,j+1];writeln(map[x2,y2]:0:0);end. |
