#!/usr/bin/python
from datetime import datetime
import sys
import csv
import re

reader = csv.reader(sys.stdin, delimiter = "\t")

for line in reader:
        date = line[0]
        weekday = weekday = datetime.strptime(date, "%Y-%m-%d").weekday()
        print "{0}\t{1}".format(weekday,line[4])

#!/usr/bin/python

import sys
count = 0
total = 0.00
nodeList = []
for line in sys.stdin:
    smallData = ""
    data_mapped = line.strip().split("\t", 1)
    if len(data_mapped) != 2:
        continue
    thisKey, thisContent = data_mapped
    if thisKey == "0":
        count = count +1
        total = total + float(thisContent)
print total/count