var
a: integer;
begin
{1}
readln(a);
if a > 0 then a := a + 1;
writeln(a);
{2}
readln(a);
if a < 0 then a := a * 2;
writeln(a);
{3}
readln(a);
if a <> 0 then a := a - 4;
writeln(a);
{4}
readln(a);
if a > 0 then a := a + 1
else a := a - 1;
writeln(a);
{5}
readln(a);
if a = 0 then a := a + 3
else a := 0;
writeln(a);
end.
{6}
var
x, y: real;
begin
readln(x, y);
if x > y then x := x * y
else x := x + y;
writeln(x);
end.
a:array[1..1000000]of integer;
b,i,n,c,k:integer;
begin
readln(n);
for i:=1 to n do
readln(a[i]);
for i:=1 to n do
if a[i]>0 then begin
c:=c+a[i];
k:=k+1;
end;
write(c/k);
end.