num14

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

int main() {
    unsigned long long int i;
    int cnt;
    for (i = 1, cnt = 0; cnt < 21; i *= 7, cnt++) {}

    unsigned long long int j;
    for (j = 1, cnt = 0; cnt < 14; j *= 7, cnt++) {}

    unsigned long long int ananas = i + j - 7;
    list<int> v;
    while (ananas > 0) {
        v.push_front(ananas % 7);
        ananas /= 7;
    }
    cout << count(begin(v), end(v), 6);
    return 0;
}