import sys
def main():
    input_data = sys.stdin.read().split()
    if not input_data:
        return
    a = int(input_data[0])
    b = int(input_data[1])
    for i in range(a, b + 1):
        if i % 3 == 0 or '3' in str(i):
            print(i)
if __name__ == '__main__':
    main()