{Винарский}
program z_12_30(input,output);

function g(m: integer): integer; forward;

function f(n: integer): integer;
begin
if(n=0) then f:=1
else f:=n+g(n-1);
end;

function g(m: integer): integer;
begin
if(m=0) then g:=1
else g:=f(m-1)+(m-1);
end;

begin
end.