uses crt;
var i,j,n:byte;
summa,s:longint;
begin
clrscr;
write('n=');
readln(n);
summa:=0;
for i:=1 to n do
begin
s:=i;
for j:=1 to i do
s:=s*(j+i);
summa:=summa+s;
end;
write('s=');
writeln(summa);
readln;
end.