uses crt;

var a:array[1..20] of integer;

i,dem,t:integer;

begin

clrscr;

for i:=1 to 20 do

begin

write('A[',i,']='); readln(a[i]);

end;

writeln('Cac phan tu chan');

for i:=1 to 20 do

writeln;

dem:=0;

t:=0;

for i:=1 to 20 do

if a[i]>0 then

begin

dem:=dem+1;

t:=t+a[i];

end;