#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;


int main(){
    string s1, s2, s3 = "8/";
    int d = 31;
    cin >> s1 >> s2;
    if(s1 == "Sun" || s1 == "Sat") d++;
    if(d == 32 && (s2 == "Sun" || s2 == "Sat")) d++;
    cout << s3 << d << endl; 
}