#include<iostream>
#include<string>
#include<sstream>
using namespace std;
int main(){
    string s,a,b;
    getline(cin,s);
    cin>>a>>b;

    stringstream ssin(s);
    string str;
    while(ssin>>str){
        if(str==a){cout<<b<<' ';}
        else cout<<str<<' ';
    }

}