#include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, c;     cin >> a >> b >> c;     int r = min(a / 3, min(b / 2, c / 2));     a -= 3 * r;     b -= 2 * r;     c -= 2 * r;     int ans = 7 * r;     int cnt1 = 0;     for (int i = 0; i < 14; i++) {       int a1 = a, b1 = b, c1 = c, cnt = 0;       for (int j = i; j < 14; j++) {         if (j == 0 || j == 3 || j == 6 || j == 7 || j == 10 || j == 13) a1--;         if (j == 1 || j == 5 || j == 8 || j == 12) b1--;         if (j == 2 || j == 4 || j == 9 || j == 11) c1--;         if (a1 < 0 || b1 < 0 || c1 < 0) {           cnt1 = max(cnt1, cnt);           break;         }         cnt++;       }     }     cout << ans + cnt1;   }   