这里将所有条件和最优条件输出
program chess;
const xx:array[1..4] of 1..2=(1,2,2,1);
yy:array[1..4] of -2..2=(2,1,-1,-2);
var
t,tt,t1,tt1:array[0..10] of integer;
i,p,q,num,m:integer;
procedure priteln(x1:integer;y1:integer);
begin
i:=1;
write('(0,0)');
repeat
write('--','(',t[i],',',tt[i],')');
inc(i);
until (t[i]=x1)and(tt[i]=y1);
write('--','(',t[i],',',tt[i],')');
writeln;
end;
procedure findway(k:integer);
var
x,y,n:integer;
begin
for n:=1 to 4 do begin
x:=t[k-1]+xx[n];
y:=tt[k-1]+yy[n];
if not((x>p)or(y<0)or(y>4)) then begin
t[k]:=x;
tt[k]:=y;
if(x=p) and (y=q) then begin
if(m>k) then begin
m:=k;
tt1:=tt;
t1:=t;
end;
priteln(p,q);
inc(num);
end;
findway(k+1);
end;
end;
end;
begin
num:=0;
m:=100;
readln(p,q);
findway(1);
writeln('This is the best way how to finsh it:');
write('(0,0)');
for i:=1 to m do begin
write('--','(',t1[i],',',tt1[i],')');
end;
readln;
end.