func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, m, i, j, k, l1 = 1, l2 = 1, s, r[7], z = 0;     cin >> n >> m;     for (i = 7; i < n; i *= 7) l1++;     for (i = 7; i < m; i *= 7) l2++;     if (l1 + l2 < 8)       for (i = 0; i < n; ++i)         for (j = 0; j < m; ++j) {           for (k = 0; k < 7; ++k) r[k] = 0;           for (s = i, k = 0; k < l1; s /= 7, ++k) r[s % 7]++;           for (s = j, k = 0; k < l2; s /= 7, ++k) r[s % 7]++;           for (k = 0; k < 7; k++)             if (r[k] > 1) break;           if (k == 7) z++;         }     cout << z;   }   