#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(n); ++i)
using namespace std;
using ll=long long;
int main(){
    char c1,c2,c3;
    cin>>c1>>c2>>c3;
    if(c2=='?')printf("%d\n",14);
    else printf("%d\n",4);
}