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  1. #include <bits/stdc++.h>
  2.  
  3. #define forn(i, n) for (int i = 0; i < int(n); i++)
  4. #define ford(i, n) for (int i = int(n) - 1; i >= 0; i--)
  5. #define fore(i, l, r) for (int i = int(l); i < int(r); i++)
  6. #define correct(x, y, n, m) (0 <= (x) && (x) < (n) && 0 <= (y) && (y) < (m))
  7. #define all(a) (a).begin(), (a).end()
  8. #define sz(a) int((a).size())
  9. #define pb(a) push_back(a)
  10. #define mp(x, y) make_pair((x), (y))
  11. #define x first
  12. #define y second
  13.  
  14. using namespace std;
  15.  
  16. typedef long long li;
  17. typedef long double ld;
  18. typedef pair<int, int> pt;
  19.  
  20. template<typename X> inline X abs(const X& a) { return a < 0? -a: a; }
  21. template<typename X> inline X sqr(const X& a) { return a * a; }
  22.  
  23. const int INF = int(1e9);
  24. const li INF64 = li(1e18);
  25. const ld EPS = 1e-9, PI = 3.1415926535897932384626433832795;
  26.  
  27. int a, b;
  28.  
  29. inline bool read() {
  30.     return !!(cin >> a >> b);
  31. }
  32.  
  33. int c[] = { 6, 2, 5, 5, 4, 5, 6, 3, 7, 6 };
  34.  
  35. inline void solve() {
  36.     int ans = 0;
  37.     fore(i, a, b + 1) {
  38.         int x = i;
  39.         while (x) {
  40.             ans += c[x % 10];
  41.             x /= 10;
  42.         }
  43.     }
  44.     cout << ans << endl;
  45. }
  46.  
  47. int main() {
  48. #ifdef SU1
  49.     assert(freopen("input.txt", "rt", stdin));
  50.     //assert(freopen("output.txt", "wt", stdout));
  51. #endif
  52.    
  53.     cout << setprecision(10) << fixed;
  54.     cerr << setprecision(5) << fixed;
  55.  
  56.     while (read()) {
  57.         solve();
  58.         //break;
  59.     }
  60.    
  61.     return 0;
  62. }
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