import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String[] str = sc.nextLine().split(" ");
    int fiveCount = 0;
    int sevenCount = 0;
    
    for (String val : str) {
      if (val.equals("5")) fiveCount++;
      if (val.equals("7")) sevenCount++;
    }
    
    System.out.println((fiveCount == 2 && sevenCount == 1) ? "YES": "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