import std.stdio, std.algorithm, std.array, std.string, std.math, std.conv;

void main() {
  long x, y;
  auto s = map!(x => x.to!long)(readln.chomp.split);
  x = s[0];
  y = s[1];
  long res = 0;
  while (x <= y) {
    x *= 2;
    ++res;
  }
  writeln(res);
}
