# Nominal resolution

for i in range(1, 7):
    f = open(f"figure{i}.txt", "r")
    size_obj = float(f.readline())
    f.readline()

    max_len = 0

    for line in f:
        photo_len = list(map(int, line.split()))
        number_one = photo_len.count(1)

        if (max_len < number_one):
            max_len = number_one

    f.close()

    if max_len == 0:
        result = 0
    else:
        result = float(size_obj / max_len)

    print(f"Nominal resolution for figure{i}: {result} mm")