#include<bits/stdc++.h> using namespace std; int main() { int n,k; cin>>n>>k; int s=n/1%10; int c=n/10%10; int y=k/1%10; int x=k/10%10; if(n==k){ cout<<"200"; } else if(y==c&&s==x){ cout<<"20"; } else if(y==c||s==x){ cout<<"2"; } else{ cout<<"0"; } return 0; }