Program gt;
var n,i,p:integer;
begin
read(N);
p:=1;
for i:=2 to n do
begin
p:=p*i;
end;
write(p);
end.
3)
program gt;
var s:integer;
begin
for i:=5 to 100 do
begin
if(i mod 6=0)then s:=s+i;
end;
writeln(s);
end.
2)
program gtr;
var i,n:integer;
p,a:real;
begin
reaD(n);
p:=0;
for i:=1 to n do
begin
read(a);
p:=p+1/a;
end;
p:=n/p;
write(p);
end.