Program hotrotinhoc_hoc24;
var a: array[1..100] of real;
i,n,d: ineteger;
begin
write('Nhap so ban hoc sinh lop 11: '); readln(n);
d:=0;
for i:=1 to n do
begin
write('Nhap can nang ban thu ',i,' : '); readln(a[i]);
if a[i]>50 then inc(d);
end;
write('Co ',d,' ban co can nang lon hon 50kg');
readln
end.