ECHNHAY PASCAL

var k,n: int64;
function f(n,k:int64):int64;
begin
    if k mod n=0 then exit(n)
    else solve(k mod n,k mod n +n);
end;
begin
    assign(input,'echnhay.inp'); reset(input);
    assign(output,'echnhay.out'); rewrite(output);
    readln(n,k);
    write(f(n,k));
end.