var x,r,a,b:integer;
begin
readln(a);
readln(b);
r:=0;
x:=a;
while x<=b do
begin
r:=r+x*x;
x:=x+1;
end;
writeln(r);
end.
var x,r,a,b:integer;
begin
readln(a);
readln(b);
r:=0;
x:=a;
while x<=b do
begin
r:=r+x*x;
x:=x+1;
end;
writeln(r);
end.