#include <iostream>
#include <string>

using namespace std;

int main()
{
    string s;
    getline(cin, s);
    bool k = 1;
    int c, x = 0;
    int nrs = 0, cnr = 0;
    while(x < s.size()-1 && k)
    {
        c = s[x]-'0';
        if(c){
            if(cnr)
                k = 0;
            else
                for(int i = 1; i < 8; ++i){
                    c = s[x+i]-'0';
                    if(!c)
                        ++nrs;
                    else
                        nrs = 0;
                }
            cnr = nrs;
        }
        else
            if(!cnr)
                k = 0;
            else
            {
                --cnr;
            }
        x += 8;
    }
    if(k && !cnr)
        cout << "Yes";
    else
        cout << "No";
    return 0;
}