import java.util.Scanner;
class Main{
  
  static void check_include_7(int number){
    if(number/100 == 7 || number % 10 == 7 || ((number % 100<=79)&&( number % 100 >= 70))){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
  public static void main(String args[]){
    Scanner scanner = new Scanner(System.in);
    int number = scanner.nextInt();
    check_include_7(number);
    scanner.close();
  }

}

/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