#include<bits/stdc++.h>
using namespace std;
string r1,x1,r2,x2;
int main(){
    freopen("travel.in","r",stdin);
    freopen("travel.out","w",stdout);
    cin>>r1>>r2>>x1>>x2;
    if(r1==x1){
        if(r2[0]==x2[0]&&r2[1]==x2[1]){
            if(r2[2]<='C'==x2[2]<='C'){
                if(abs(r2[2]-x2[2]<2)){
                    cout<<"1111";
                }
                else cout<<"1110";
            }
            else cout<<"1100";
        }
        else cout<<"1000";
    }
    else cout<<"0000";
}

感谢夸奖

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