#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <math.h>
#include <bitset>
#include <iterator>
#include <iomanip>
#include <sstream>
#define INF 2000000000
using namespace std;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
#define sym cout<<"---------"<<endl;
#define ll long long
#define PL pair<long long, long long>
#define P pair<int,int>
#define mk make_pair
#define en endl
#define WHITE 0
#define BLACK 2
#define GRAY 1
#define RE return 0
#define int ll


signed main(){
  char a[3];
  int hatena=-1;
  for(int i=0; i<3; i++){
    cin>>a[i];
    if(a[i]=='?') hatena=i;
  }
  if(hatena==1){
    cout<<14<<en;
  }else{
    if(hatena==2){
      if(a[1]>a[0]) cout<<1<<en;
      else cout<<4<<en;
    }else{
      if(a[1]<a[2]) cout<<4<<en;
      else cout<<1<<en;
    }
  }
}