program tan_so;
uses crt;
var A:array[0..1000] of integer;
n,i,j,d,tg:integer;
begin
clrscr;
write('Nhap so luong phan tu: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(A[i]);
end;
for i:=1 to n-1 do
for j:=i+1 to n do
if A[i]>A[j] then
begin
tg:=A[i];
A[i]:=A[j];
A[j]:=tg;
end;
i:=1;
while i<=n do
begin
if A[i]<>A[i+1] then
begin
d:=0; j:=i;
while A[j]=A[i] do
begin
d:=d+1;
j:=j-1;
end;
writeln(A[i],' : ',d);
end;
i:=i+1;
end;
readln;
end.
