#include <iostream>
using namespace std;
int main() {
    int a,b,c,d,e;
    cin>>a>>b>>c>>d>>e;
    if (a == b && b == c && c == d || a == b && b == c && c == e || 
        a == b && b == d && d == e || a == c && c == d && d == e || 
        b == c && c == d && d == e) {
        cout<<"YES"<<endl;
    } else {
        cout<<"NO"<<endl;
    }
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
map<int, int> cnt;
int a[5];
int main()
{
    for(int i=1;i<=5;++i)
    {
        cin>>a[i];
        cnt[a[i]]++;
    }
    for(auto i:cnt)
    {
        if(i.second>=4) return cout<<"YES",0;
    }
    cout<<"NO";
    return 0;
}