#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <functional>
#include <bitset>
#include <numeric>
#include <complex>
#include <cassert>
#include <random>
using namespace std;
using ll = long long;


int main() {
	string a, b; cin >> a >> b;
	cout << a << " xor " << b << endl;
	return 0;
}