#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define all(x) x.begin(), x.end()
#define int long long
using namespace std;
typedef pair< int, int > P;
typedef long long ll;
const int N = 2e5+99, M = 2e5+9, INF = 1.1e18, mod = 998244353;
const double PI = acos( -1 ), ret = PI / 180.0;

signed main( void ) {
    ios::sync_with_stdio( false );
    int a, b, c;
    cin >> a >> b >> c;
    set<int> st;
    st.insert( a );
    st.insert( b );
    st.insert( c );
    if( st.size() == 2 ) cout << "Yes" << '\n';
    else cout << "No" << '\n';
    
    return 0;
}
/*
a + b = x
b + c = y
c + a = z
a * 2 + b * 2 + c * 2 = x + y + z*/
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Measured memory_bytes: 256