import std.functional,
       std.algorithm,
       std.bigint,
       std.string,
       std.traits,
       std.array,
       std.range,
       std.stdio,
       std.conv;

void main() {
  ulong[] XY = readln.chomp.split.to!(ulong[]);
  ulong X = XY[0],
        Y = XY[1];
  ulong n;

  while (X*2^^n <= Y) {
    n++;
  }

  writeln(n);
}
