def get_b_list(binary_str):
    b_list = []
    s = binary_str.lstrip('0') or '0'  # Handle leading zeros
    if s == '0':
        return []
    while s != '0':
        reversed_s = s[::-1]
        b = 0
        # Count trailing zeros in the original string (leading zeros in reversed)
        while b < len(reversed_s) and reversed_s[b] == '0':
            b += 1
        b_list.append(b)
        # Remove the trailing 'b' zeros and the next 1, then process the remaining part
        remaining_reversed = reversed_s[b+1:]
        if not remaining_reversed:
            new_s = '0'
        else:
            new_s = remaining_reversed[::-1].lstrip('0')
            if not new_s:
                new_s = '0'
        s = new_s
    # Sort the list in descending order
    b_list.sort(reverse=True)
    return b_list

# Read input
n_str = input().strip()
m_str = input().strip()

# Get the b lists for N and M
n_list = get_b_list(n_str)
m_list = get_b_list(m_str)

# Compare the two lists lexicographically
if n_list < m_list:
    print("Yes")
else:
    print("No")