from sys import stdin
##  input functions for me
def ria(sep = ''):
    if sep == '' :
        return list(map(int, input().split())) 
    else: return list(map(int, input().split(sep)))
def rsa(sep = ''):
    if sep == '' :
        return input().split() 
    else: return input().split(sep)
def ri(): return int(input())
def rd(): return float(input())
def rs(): return input()
##

## main ##

ss = rsa()
inc1 = 1 if (ss[0] == "Sun" or ss[0] == "Sat") else 0
inc2 = 1 if (inc1 == 1 and (ss[1] == "Sun" or ss[1] == "Sat")) else 0
res = "8/" + str(31 + inc1 + inc2)
print(res)