#include <algorithm>
#include <iostream>
#include <iterator>
#include <numeric>
#include <vector>
 
using namespace std;
 
const int X = 6;
 
int main() {
  std::vector<int> v = {
     0,  1,  2,  3,  4,  5,
     6,  7,  8,  9, 10, 11,
    12, 13, 14, 15, 16, 17,
    18, 19, 20, 21, 22, 23,
    24, 25, 26, 27, 28, 29,
    30, 31, 32, 33, 34, 35
  };
 
  int sum = std::accumulate(v.begin(), std::partition(v.begin(), v.end(), [] (int i) {
  	return ((((i % X) > (i % (X+1))) && ((i % (X+1))!=0)) || (i>0 && i<X));
  }), 0);
  cout << sum;
}

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