import java.util.Scanner;
public class Main {
   
    public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } 
} import java.util.Scanner; Scanner java.util public class Main {
   
    public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } 
} Main public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } main { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N=sc.nextInt(); N sc.nextInt() sc.nextInt sc if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
} N>=100&&N<=999 N>=100 N 100 N<=999 N 999 {
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
} String s=String.valueOf(N); s String.valueOf(N) String.valueOf String N if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No "); s.contains("7") s.contains s "7" System.out.println(" Yes ") System.out.println System.out System System.out " Yes " System.out.println(" No ") System.out.println System.out System System.out " No " String[] args args public class Main {
   
    public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } 
} public class Main {
   
    public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } 
} Main
import java.util.Scanner;
public class Main {
   
    public static void main(String[] args) { 
		Scanner sc = new Scanner(System.in);
int N=sc.nextInt();
if(N>=100&&N<=999){
    String s=String.valueOf(N);
    if(s.contains("7"))
        System.out.println(" Yes ");
    else
        System.out.println(" No ");     
}
    } 
}