import java.util.*;

public class Main{
	static Scanner s=new Scanner(System.in);
	public static void main(String [] args){
		int a,b,c;
		a=s.nextInt();
		b=s.nextInt();
		c=s.nextInt();
		int fiv=0,sev=0;
		if(a==5)fiv++;
		if(a==7)sev++;
		if(b==5)fiv++;
		if(b==7)sev++;
		if(c==5)fiv++;
		if(c==7)sev++;
		if(fiv==2&&sev==1)System.out.println("YES");
		else System.out.println("NO");
	}
}
/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