import java.util.*;

public class Main {
	public static void main(String[] args) throws Exception{
		Scanner scn = new Scanner(System.in);
		int a = scn.nextInt();
		int b = scn.nextInt();
      	int c = scn.nextInt();
      	int count5 = 0;
      	int count7 = 0;
      	if(a==5) count5++;
      	if(a==7) count7++;
      	if(b==5) count5++;
      	if(b==7) count7++;
      	if(c==5) count5++;
      	if(c==7) count7++;
      	String ans = "NO";
      	if(count5==2 && count7==1) ans = "YES";
      	System.out.println(ans);
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz