var n,x: integer; s:real;
begin
s:=0;
for x:=1 to 2 do
for n:=0 to 10 do
s:=s+(x*exp(ln(n)*4n)+1)/4n+1;
end;
writeln(s);
end.
var n,x: integer; s:real;
begin
s:=0;
for x:=1 to 2 do
begin
for n:=0 to 10 do
begin
s:=s+(x*exp(ln(n)*4n)+1)/4n+1;
end;
writeln(s);
end;
end.