Why WA? Just tree node, who have data? Please give me one.
var
n,i,j,k,count:integer;
c,x,y,sum:array[1..15000]of integer;
function lowbit(x:integer):integer;
begin
exit(x and (-x));
end;
procedure increase(k:integer);
var
s:integer;
begin
s:=k;
while s<n do begin
inc(c[s]);
s:=s+lowbit(s);
end;
end;
function getsum(k:integer):integer;
var
s,t:integer;
begin
t:=0;
s:=k;
while s>0 do begin
t:=t+c[s];
s:=s-lowbit(s);
end;
exit(t);
end;
begin
fillchar(c,sizeof(c),0);
readln(n);
for i:=1 to n do begin
readln(x[i],y[i]);
count:=1;
if i=1 then begin increase(1); continue; end;
for j:=i-1 downto 1 do
if x[j]<=x[i] then inc(count);
increase(count);
end;
for i:=1 to n do sum[i]:=getsum(i);
writeln(sum[1]);
for i:=2 to n do
writeln(sum[i]-sum[i-1]);
end.