#include <iostream>
#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<<' ';
    return 0;

}