var
n,i:integer;
sum:extended;
begin
readln(n);
sum:=0;
for i:=1 to n do
begin
sum:=sum+(exp(i*ln(i)));
end;
writeln(sum);
end.
var
n,i:integer;
sum:extended;
begin
readln(n);
sum:=0;
for i:=1 to n do
begin
sum:=sum+(exp(i*ln(i)));
end;
writeln(sum);
end.