#!/usr/bin/env python3
from functools import reduce
from itertools import permutations, product, combinations, pairwise, groupby, takewhile
from more_itertools import batched, sliding_window
from collections import defaultdict, deque
import re, sys
import math
import numpy as np
import cv2 as cv
from icecream import ic

def commaline(line):
    return [int(n) for n in line.strip().split(',')]

def headerfooter(f):
    return f.read().split('\n\n', maxsplit=1)

def pgphs(text):
    return text.split('\n\n')

def hfl(f): # header footer lines
    return [p.strip().split('\n') for p in headerfooter(f)]

def numbers(l): # usually what we want really
    return [int(x) for x in re.findall(r'[-0-9]+', l)]

def lines(f):
    return [l.strip() for l in f.readlines()]

def dprint(*args):
    sep = False
    for arg in args:
        if sep:
            print('--------')
        sep = True
        for a, b in arg.items():
            print('%10s: %s' % (a, ','.join(b)))
    print()