Program BTT;
Uses crt;
Var A: array[1..500] of real;
n,i,d: longint;
max,s: real;
Begin
Clrscr;
Write('Nhap so hoc sinh: '); Readln(n);
max:=0; s:=0;
For i:=1 to n do
Begin
Write('Nhap diem hoc sinh thu ',i,': ');
Readln(A[i]);
If A[i]>max then max:=A[i];
s:=s+A[i];
End;
d:=0;
For i:=1 to n do
If A[i]=max then inc(d);
Writeln('DTB la: ',s/n:0:2);
Write('Co ',d,' thu khoa');
Readln
End.