import sys
from PIL import Image

BOX = (8, 52, 648, 531)          # the DOSBox client area = the gauge framebuffer
SHIPPED = "shipped.png"


def load(p):
    return Image.open(p).convert("RGB").crop(BOX)


def magenta(p):
    return p[0] > 150 and p[2] > 150 and p[1] < 140


def score(path):
    a, b = load(SHIPPED), load(path)
    if a.size != b.size:
        return "%-10s SIZE MISMATCH %s vs %s" % (path, a.size, b.size)
    pa, pb = a.load(), b.load()
    w, h = a.size
    same = lit_ship = lit_both = mag = 0
    for y in range(h):
        for x in range(w):
            s, o = pa[x, y], pb[x, y]
            if s == o:
                same += 1
            if sum(s) > 60:
                lit_ship += 1
                if sum(o) > 60:
                    lit_both += 1
            if 0 <= x < 200 and 0 <= y < 60 and magenta(o):
                mag += 1
    n = w * h
    return "%-10s identical %5.1f%%   coverage %3d%%   title-band magenta %4d" % (
        path, 100.0 * same / n, round(100.0 * lit_both / max(lit_ship, 1)), mag)


for p in sys.argv[1:]:
    print(score(p))