#include<iostream>
#include<sstream>

using namespace std;

int main()
{
    string s, a, b;
    getline(cin, s);
    cin >> a >> b;

    stringstream ssin(s);//将字符串初始化为字符串流，此时ssin用法和cin一样

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

    return 0;
}