#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    string s;
    cin >> s;
    int temp = 1;
    int ans;
    for(int i = 1; i < s.size(); i++){
        if(s[i] == s[i-1]){
            temp += 1;
            cout << temp << " ";
        }
        else;
            ans = max(ans, temp);
            temp = 1;
        }
    if(ans >= 7){
        cout << "YES";
    }
    else{
        cout << "NO";
    }
    return 0;
}