MCONVOI - Con Voi
Tác giả: flashmt
Ngôn ngữ: Pascal
uses math;
const fi='';
maxn=300000;
z=1000000007;
var n,maxc,re:longint;
a,b,f,g,d:array[1..maxn] of longint;
procedure sort(l,r:longint);
var i,j,x,y,t:longint;
begin
i:=l; j:=r; x:=a[(i+j) shr 1]; y:=b[(i+j) shr 1];
repeat
while (a[i]<x) or ((a[i]=x) and (b[i]>y)) do i:=i+1;
while (a[j]>x) or ((a[j]=x) and (b[j]<y)) do j:=j-1;
if i<=j then
begin
t:=a[i]; a[i]:=a[j]; a[j]:=t;
t:=b[i]; b[i]:=b[j]; b[j]:=t;
i:=i+1; j:=j-1;
end;
until i>j;
if i<r then sort(i,r);
if l<j then sort(l,j);
end;
procedure sortt(l,r:longint);
var i,j,x,y:longint;
begin
i:=l; j:=r; x:=b[(i+j) shr 1];
repeat
while b[i]<x do i:=i+1;
while b[j]>x do j:=j-1;
if i<=j then
begin
y:=b[i]; b[i]:=b[j]; b[j]:=y;
y:=d[i]; d[i]:=d[j]; d[j]:=y;
i:=i+1; j:=j-1;
end;
until i>j;
if i<r then sortt(i,r);
if l<j then sortt(l,j);
end;
procedure edit;
var i:longint;
begin
maxc:=1; a[d[1]]:=1;
for i:=2 to n do
begin
if b[i]>b[maxc] then
begin
maxc:=maxc+1;
b[maxc]:=b[i];
end;
a[d[i]]:=maxc;
end;
end;
procedure rf;
var i:longint;
begin
read(n);
for i:=1 to n do
begin
read(a[i],b[i]);
d[i]:=i;
end;
sort(1,n);
sortt(1,n);
edit;
end;
function calc(x:longint;var num:longint):longint;
var r:longint;
begin
num:=0; r:=0;
while x>0 do
begin
if f[x]=r then
begin
num:=num+g[x];
if num>=z then num:=num-z;
end;
if f[x]>r then
begin
r:=f[x]; num:=g[x];
end;
x:=x-x and (-x);
end;
calc:=r;
end;
procedure add(x,val,num:longint);
begin
while x<=maxc do
begin
if val<f[x] then exit;
if val=f[x] then
begin
g[x]:=g[x]+num;
if g[x]>=z then g[x]:=g[x]-z;
end
else
begin
f[x]:=val; g[x]:=num;
end;
x:=x+x and (-x);
end;
end;
procedure pr;
var i,x,val,num:longint;
begin
for i:=1 to n do
begin
x:=a[i];
val:=calc(x-1,num);
if num=0 then num:=1;
add(x,val+1,num);
end;
val:=calc(maxc,num);
writeln(val);
writeln(num);
end;
begin
assign(input,fi); reset(input);
rf;
pr;
close(input);
end.