100%AC

#include <bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c;
    cin >> a >> b >> c;
    if(a == 1 && b == 2) cout << "YES";
    else if(a == 1 && c == 3) cout << "YES";
    else if(b == 2 && c == 3) cout << "YES";
    else cout << "NO";
	return 0;
}