Unique identifier
Solutions A brute force solution involves building the binary string one character at a time, starting from an empty string. At each step, it tries adding a 0 or a 1 and continues until the string reaches length n. When a full-length string is formed, it checks if it’s already in the given list. If it’s not, the function prints it and stops. This approach guarantees that the first missing string found is among the smallest in lexicographical order.
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