#include <stdio.h>

long int func(long int, long int);

int main(void) {
    long int n,m;
    scanf("%ld", &n);
    scanf("%ld", &m);
    printf("%d\n", func(n, m));
    return 0;
}

long int func(long int n, long int m) {
	if (n == 1) return m;
    else if (n%2 == 0) return (n / 2);
    	else return func(((n + 1) / 2), (m + 1));
}