#include <iostream>

using namespace std;

int main(){
    string s,t;
    int count = 0;
    if(cin>>s>>t){
        for(auto &ch: s){
            if(t.find(ch) != std::string::npos){
                count++;
            }
        }
    }
    if(count == s.length()){
        cout<<"true"<<endl;
    }else{
        cout<<"false"<<endl;
    }
}