# include <iostream>
using namespace std;
int main()
{
	int A, B, C;
	cin >> A >> B >> C;
	if (A == 5 && B == 5 && C == 7) cout << "YES" << endl;
	else if (A == 5 && C == 5 && B == 7) cout << "YES" << endl;
	else if (B == 5 && C == 5 && A == 7) cout << "YES" << endl;
	else cout << "NO" << endl;
	return 0;
} 