uses crt; var i,n,s:longint; a:array[1..100]of longint; begin clrscr; write('Nhap so luong phan tu: ');readln(n); for i:=1 to n do begin write('Nhap phan tu thu ',i,': ');readln(a[i]); s:=s+a[i]; end; writeln('Trung binh cong: ',s/n:0:2); readln end.
