Cek Bilangan Prima
PROGRAM cekprima;
VAR
prima : boolean;
i,j : integer;
begin
while not eof (input) do begin
readln(i);
prima:= true;
if i < 2 then prima:= false;
for j:= 2 to i-1 do begin
if i mod j = 0 then prima := false;
end;
if prima = true then writeln('YA') else writeln('TIDAK');
end;
readln;
end.
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