>

const
  maxn = 100;
var
  a,b : array[0..maxn]of longint;
  ans,i,j,D,E,F,DP,EP,H : longint;

begin
  readln(D,E,F,DP,EP,H);
  for i:=1 to D do begin
    DP:=DP div 2;
    a[i]:=DP;
  end;
  for i:=1 to E do begin
    EP:=EP div 2;
    b[i]:=EP;
  end;
  i:=1;j:=1;
  while (i<=D)and(j<=E) do begin
    if a[i]>b[j] then inc(i)
    else if b[j]>a[i] then inc(j)
    else begin
      ans:=i+j-2;break;
    end;
  end;
  if ans<=H then writeln('YES') else writeln('NO');
end.