//773
#include <cstdio>

int main(void) {
	FILE* fin = fopen("input.txt", "r");
	FILE* fout = fopen("output.txt", "w");

	int m, t;
	fscanf(fin, "%d%d", &m, &t);
	fclose(fin);
	int out = 0;
	for (; t < m; ++ out, t <<= 1);
	fprintf(fout, "%d\n", out);
	fclose(fout);
	return 0;
}