import java.util.Scanner;
public class Main{
public static void main
(String[] args
){ Scanner sc
= new Scanner
(System.
in); int c=1, max=0;
for(int i=0;i<rs.length();i++){
if(i<rs.length()-1 && rs.charAt(i) == rs.charAt(i+1)){
c++;
}else{
if(c>max)
max = c;
c=1;
}
}
System.
out.
println(max
+" c:"+c
); System.
out.
println((max
>=7)?"YES":"NO"); }
}
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