#include <bits/stdc++.h>
#define INT long long int
#define N 3
#define PA pair<INT, INT>
#define oo 9876543219876543
#define MOD 1000000007
using namespace std;
INT T, a, b, c, d;
string s[100];
char in[100];
int main()
{
    //ios::sync_with_stdio(false);
    srand(time(NULL));
    for(int i = 0 ; i < 50 ; i++ )
    {
        sprintf(in, ".%d.in", i+1);
        freopen(in, "w", stdout);
        INT x, y, n;
        cin>>a>>b>>c>>d;
        cout<<a<<" "<<b<<"\n"<<c<<" "<<d<<endl;
        sprintf(in, ".%d.out", i+1);
        freopen(in, "w", stdout);
        if( a < b ) swap(a, b);
        if( (a == c and b+d==a) or (a==d and b+c==a) ) cout<<"YES\n";
        else cout<<"NO\n";
    }
    return 0;
}