Const N = 100;
var
mas : array [1..N] of real;
sum : real := 0;
counter : integer := 0;
begin
for var i := 1 to N do begin
readln(mas[i]);
sum += mas[i];
counter += 1;
end;
writeln(sum/counter);
end.
Const N = 100;
var
mas : array [1..N] of real;
sum : real := 0;
counter : integer := 0;
begin
for var i := 1 to N do begin
readln(mas[i]);
sum += mas[i];
counter += 1;
end;
writeln(sum/counter);
end.