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uses
crt;
var
chasov,
minutov,
sekundov :byte;
tekushchiy_sekund:word;
begin
clrscr;
write(' chasov ');
read( chasov);
if chasov=9
then
begin
clrscr;
halt;
end;
write(' minutov ');
read( minutov);
write(' sekundov ');
read( sekundov);
clrscr;
for tekushchiy_sekund:=1
to sekundov+60*minutov+3600*chasov do
begin
if keypressed then
if readkey=#27
then halt;
delay(50000);
end;
sound(300);
readkey;
nosound;
end.