#include<iostream> using namespace std; int main(){ int a,b; cin>>a>>b; if(a==b){ cout<<"100"; }else if(a/10==b%10 && a%10==b/10){ cout<<"20"; }else if(a/10==b%10 || a%10==b/10 || a/10==b/10 || a%10==b%10){ cout<<"2"; }else{ cout<<"0"; } return 0; }