#include <bits/stdc++.h>
using namespace std;

#define LL long long
#define DD long double

#define M 1000000007
#define INF 1e18

void setIO(string s = "") { 
  cin.sync_with_stdio(0); cin.tie(0);
  if (s.size()) s += ".in", freopen(s.c_str(), "r", stdin);
}

int tt = 1;
void solve() {
  set<int> nums;
  int a;
  while (cin >> a) nums.insert(a);
  cout << ((nums.size() == 2) ? "Yes" : "No") << endl;
}

int main() {
  setIO();
  while (tt--) {
    solve();
  }
  return 0;
}
#include <bits/stdc++.h>
using namespace std;
#define all(a) a.begin(), a.end()
#define rep(i, n) for(int i = 0; i < n; i++)
#define endl "\n"
typedef long long ll;

const int BIG_NUM = 1e9;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int a, b, c;
    cin >> a >> b >> c;
    if(a == b && b != c) {
        cout << "Yes";
    } else if(b == c && c != a) {
        cout << "Yes";
    } else if(c == a && a != b) {
        cout << "Yes"; 
    } else {
        cout << "No";
    }
    return 0;
}

