Why i got wa!!
program Ural_1008(input,output);
const
mmm =11;
way :array [1..4,1..2] of integer
=((1,0),(0,1),(-1,0),(0,-1));
out :array [1..4] of char
=('R','T','L','B');
type
xing =array [0..mmm,0..mmm] of boolean;
xing1 =array [1..101,1..2] of integer;
var
map :xing;
res :xing1;
head,tail,k :integer;
lx,ly,n :integer;
s :string;
procedure init;
var
i,j ,
tx,ty :integer;
begin
fillchar(map,sizeof(map),false);
fillchar(res,sizeof(res),0);
readln(lx,ly);
map[lx,ly]:=true;
for i:=2 to n do
begin
read(tx,ty);
map[tx,ty]:=true;
if tx<lx then
begin
lx:=tx; ly:=ty;
end;
if (tx=lx) and (ty<ly) then
begin
lx:=tx; ly:=ty;
end;
end;
writeln(lx,' ',ly);
end;
procedure solve;
var
i,j,sx,sy :integer;
begin
head:=1; tail:=1; map[lx,ly]:=false;
res[1,1]:=lx; res[1,2]:=ly;
while head<=tail do
begin
for i:=1 to 4 do
begin
sx:=res[head,1]+way[i,1];
sy:=res[head,2]+way[i,2];
for j:=1 to n do if map[sx,sy] then
begin
write(out[i]);
inc(tail);
res[tail,1]:=sx;
res[tail,2]:=sy;
map[sx,sy]:=false;
break;
end;
end;
if head<>n then writeln(',')
else writeln('.');
inc(head);
end;
end;
procedure solve2;
var
i,j :integer;
sx,sy ,
tx,ty :integer;
t1,t2 :string;
begin
fillchar(map,sizeof(map),false);
fillchar(res,sizeof(res),0);
t1:=copy(s,1,pos(' ',s)-1);
t2:=copy(s,length(t1)+2,length(s)-length(t1)-1);
head:=1; tail:=1;
val(t1,res[head,1],k);
val(t2,res[head,2],k);
map[res[head,1],res[head,2]]:=true;
while head<=tail do
begin
readln(s);
sx:=res[head,1];
sy:=res[head,2];
if length(s)<>1 then
for i:=1 to length(s)-1 do
begin
case s[i] of
'R':j:=1;
'B':j:=2;
'L':j:=3;
'T':j:=4;
end;
tx:=sx+way[j,1];
ty:=sy+way[j,2];
map[tx,ty]:=true;
inc(tail);
res[tail,1]:=tx;
res[tail,2]:=ty;
end;
inc(head);
end;
writeln(tail);
for i:=1 to 10 do
for j:=1 to 10 do if map[i,j] then writeln(i,' ',j);
end;
Begin
readln(s);
if pos(' ',s)=0 then
begin
val(s,n,k);
init;
solve;
end
else
begin
solve2;
end;
End.