#include <fstream.h>

int main()
{
    ifstream f("restante.in");
    ofstream g("restante.out");
    int n,i,t;
    char v[16];
    f>>i;
    for(i=1;i<=n;i++)
     {
      f>>v[i];
      if(v[i]==v[i+1]==v[i+2]==v[i+3]==v[i+4]==v[i+5]) t=1;
     }
     g<<t;

    return 0;
}