var l,i,k:integer;
Begin
Readln(k);
for i:=1 to k do begin
Readln(l);
sum:=sum+l
end;
writeln(sum/k);
end.
var l,i,k:integer;
Begin
Readln(k);
for i:=1 to k do begin
Readln(l);
sum:=sum+l
end;
writeln(sum/k);
end.