uses crt;
var a:array[1..50] of real;
i,n,k:integer;
begin
clrscr;
write('chislo avto='); read(n);
if (n>=1) and (n<=30) then
begin
writeln('skorosti:');
for i:=1 to n do
begin
readln(a[i]);
if a[i]>300 then write('error');
if (a[i]>80) and (a[i]<=300) then k:=k+1;
end;
if k>0 then write('YES')
else write('NO');
end
else write('error');
end.
