#!/usr/bin/env python3
# Render a PPM screenshot as ASCII so we can "read" the GB LCD.
import sys
def load(path):
    f=open(path,'rb'); assert f.readline().strip()==b'P6'
    w,h=map(int,f.readline().split()); f.readline()
    d=f.read(w*h*3); return w,h,d
w,h,d=load(sys.argv[1] if len(sys.argv)>1 else 'shot.ppm')
y0=int(sys.argv[2]) if len(sys.argv)>2 else 0
y1=int(sys.argv[3]) if len(sys.argv)>3 else h
for y in range(y0,min(y1,h)):
    row=[]
    for x in range(w):
        i=(y*w+x)*3; b=(d[i]+d[i+1]+d[i+2])//3
        row.append('#' if b<128 else '.')
    print(''.join(row))