import math;
a,b = input().split();
j = i = 0;
for i in range(int(a),int(b)+1):
    j = i;
    if (i%3 == 0):
        print(i);
    else:
        while(j > 0):
            if (j%10 == 3):
                print(i);
                break;
            j = math.floor(j/10);