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