#include <stdio.h>

int brokenCalc(int startValue, int target) {
    // If start is already >= target, we can only subtract
    if (startValue >= target) {
        return startValue - target;
    }
    
    int operations = 0;
    
    // Work backwards from target
    while (target > startValue) {
        operations++;
        if (target % 2 == 0) {
            // If target is even, it came from target/2 via multiply
            target /= 2;
        } else {
            // If target is odd, it came from target+1 via subtract
            target += 1;
        }
    }
    
    // Add remaining operations to reach startValue
    return operations + startValue - target;
}

int main() {
    int startValue, target;
    scanf("%d %d", &startValue, &target);
    printf("%d\n", brokenCalc(startValue, target));
    return 0;
}