# -*- coding:utf-8 -*-
#计算某特定天使星期几
#蔡勒公式：w=y+[y/4]+[c/4]-2c+[26(m+1）/10]+d-1
import math
dict = {1: "星期一", 2: "星期二", 3: "星期三", 4: "星期四", 5: "星期五", 6: "星期六", 0: "星期天"}
while 1:
  y=int(input("请输入年份"))
  m=int(input("请输入月份"))
  d=int(input("请输入天"))
  if m==1 :
    m=13
    y=y-1
  elif m==2:
    m=14
    y=y-1
  allday=math.floor((y-1)+(y-1)/4-(y-1)/100+(y-1)/400+13*(m+1)/5+(m-1)*28-7+d)
  x=allday%7
  print(dict.get(x,"计算有毛病"))