import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String input = scanner.nextLine();
		String []arr_input = input.split(" ");
		int aux_5 = 0;
		int aux_7 = 0;
		for(int i=0; i<arr_input.length; i++) {
			int value = Integer.parseInt(arr_input[i]);
			if(value==5)aux_5++;
			if(value==7)aux_7++;
		}
		String r = (aux_5==2 && aux_7==1)?"YES":"NO";
		System.out.println(r);
	}
}
/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