A. Football Solution

#include<stdio.h>

#include<string.h>

int main()

{

         char s[100];

         int i;

         scanf("%s",&s);

         int l;

         l=strlen(s);

         int flag=0,total=0;

         for (i=1;i<l;i++){

                 if(s[i]==s[i-1]){

                          flag++;

                 }

                 else{

                          flag=0;

                 }

                 if (flag==6){

                          total++;

                 }

         }

         if (total>=1){

                 printf("YES\n");

                

         }

         else

         printf("NO\n");

        

         return 0;

        

}