//
// Created by lan on 2024/4/4.
//
单词替换
#include<iostream>
#include <sstream>
using namespace std;
int main() {
string s1, s2, s3;
getline(cin, s1);
cin >> s2 >> s3;
// 字符串流
stringstream ssin(s1);
string str;
while (ssin >> str) {
if (str == s2) cout << s3 << " ";
else cout << str << " ";
}
return 0;
}