program ct;
uses crt;
var A:array[1..100] of integer;
i,n,x,dem:integer;
begin clrscr;
write('Nhap so n: '); readln(n);
for i:=1 to n do
begin
writeln('Nhap phan tu thu ',i,': '); readln(A[i]);
end;
writeln('Day so vua nhap: ',);
for i:=1 to n do write(A[i]:3);
write('Nhap so x: '); readln(x);
dem:=0;
for i:=1 to n do
if A[i]=x then dem:=dem+1;
writeln('Xuat hien ',dem,' so ',x);
readln;
end.
Học tốt!