1230 A.cpp

/**
* Git >> Mohsin_Riad

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

#define IOS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mx 1000
#define endl "\n"
#define pb push_back
#define pob pop_back
typedef long long ll;
typedef double dd;
const int N = 1e6;

int main()
{
    IOS

    int arr[4];
    for(int i=0; i<4 ;i++) cin>>arr[i];

    if((arr[0]+arr[3]) == (arr[1]+arr[2])) cout<<"YES"<<endl;
    else if((arr[0]+arr[2]) == (arr[1]+arr[3])) cout<<"YES"<<endl;
    else if((arr[0]+arr[1]) == (arr[2]+arr[3])) cout<<"YES"<<endl;
    else if((arr[0]+arr[1]+arr[2]) == arr[3]) cout<<"YES"<<endl;
    else if((arr[0]+arr[2]+arr[3]) == arr[1]) cout<<"YES"<<endl;
    else if((arr[0]+arr[1]+arr[3]) == arr[2]) cout<<"YES"<<endl;
    else if((arr[3]+arr[1]+arr[2]) == arr[0]) cout<<"YES"<<endl;
    else cout<<"NO"<<endl;

    return (0);
}