var n,i:integer;
Begin
read(n);
for i:= 2 to n-1 do
if n mod i = 0 then writeln('No');
End.
var n,i:integer;
s:string;
Begin
read(s);
for i:= 1 to length(s) do
if s[i]="a" then n:=n+1;
writeln(n);
End.
Смотри вложение
.........................
Uses Drawman;
var a,i:integer;
procedure square(a:integer);
begin
pendown;
onvector(a,0);
onvector(0,-a);
onvector(-a,0);
onvector(0,a);
end;
begin
Task('pp4');
ToPoint(7,17);
pendown;
a:=15;
for i:=1 to 8 do
begin
square(a);
penup;
onvector(1,-1);
a:=a-2;
end;
ToPoint(0,0);
<span>end. </span>