def connectedCell(matrix):
    # Write your code here
    ones = []
    for i in range(len(matrix)):
        for j in range(len(matrix[0])):
            if matrix[i][j] == 1:
                ones.append((i, j))
    l = []
    while ones != []:
        one = ones.pop(0)
        ll = [one]
        m = 1
        n = 0
        while n != m:
            #count pre expansion
            m = len(ll)
            for one in ll:
                i, j = one[0], one[1]
                neighbors = [(i-1, j-1), (i-1, j), (i-1, j+1), (i, j-1), (i, j+1), (i+1, j-1), (i+1, j), (i+1, j+1)]
                for neighbor in neighbors:
                    if neighbor in ones:
                        ones.remove(neighbor)
                        ll.append(neighbor)
            #count post expansion
            n = len(ll)
        l.append(len(ll))   
    return max(l)