#include <iostream>
#include <string>
#include <map>
#include <regex>
 
using namespace std;
 
int main()
{
	string s;
	getline(cin, s);
 
	string a, b;
	cin >> a >> b;
 
	map<string, string> v;
 
	const regex re{ "(....)/(..)/(..) (..):(..):(..)" };
	smatch m;
 
	if (regex_match(s, m, re)) {
		v["yyyy"] = m[1];
		v["mm"] = m[2];
		v["dd"] = m[3];
		v["hh"] = m[4];
		v["MM"] = m[5];
		v["ss"] = m[6];
	}
	swap(v[a], v[b]);
	cout << v["yyyy"] << "/" << v["mm"] << "/" << v["dd"] << " ";
	cout << v["hh"] << ":" << v["MM"] << ":" << v["ss"] << endl;
}
 

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MjAyMS8wMi8xNyAwMjozNzo0MQp5eXl5Ck1NCg==

2021/02/17 02:37:41
yyyy
MM