# Here is a possible function in Python to find the maximum number of segments that can be formed from a given length `n` using segments of lengths `a`, `b`, and `c`:

def max_segments(n, a, b, c):
    # Initialize the maximum number of segments to 0
    max_num_segments = 0

    # Loop through all possible combinations of segments
    for i in range(n // a + 1):
        for j in range(n // b + 1):
            for k in range(n // c + 1):
                # Check if the combination is valid and update the maximum number of segments
                if i * a + j * b + k * c == n:
                    max_num_segments = max(max_num_segments, i + j + k)

    return max_num_segments