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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. #define int int64_t
  6. const int maxn = 1 << 17, mod = 1e9 + 7;
  7. int cnt[maxn], pows[maxn];
  8. int n;
  9.  
  10. int calc(int k)
  11. {
  12.     return pows[n - k] * (pows[k] - 1) % mod;
  13. }
  14.  
  15. int get(int x, int y, int z)
  16. {
  17.     int sum = 0;
  18.     sum += calc(cnt[x]) + calc(cnt[y]) + calc(cnt[z]);
  19.     sum -= calc(cnt[x | y]) + calc(cnt[y | z]) + calc(cnt[x | z]);
  20.     sum += calc(cnt[x | y | z]);
  21.     sum = (sum + mod) % mod;
  22.     return x * y * z % mod * sum;
  23. }
  24.  
  25. main()
  26. {
  27.     //freopen("input.txt", "r", stdin);
  28.     //freopen("output.txt", "w", stdout);
  29.     ios::sync_with_stdio(0);
  30.     cin.tie(0);
  31.     pows[0] = 1;
  32.     for(int i = 1; i < maxn; i++)
  33.         pows[i] = 2 * pows[i - 1] % mod;
  34.     cin >> n;
  35.     for(int i = 0; i < n; i++)
  36.     {
  37.         int a;
  38.         cin >> a;
  39.         for(int x = 1; x < maxn; x <<= 1)
  40.             for(int y = x; y < maxn; y <<= 1)
  41.                 for(int z = y; z < maxn; z <<= 1)
  42.                 {
  43.                     if(y == z && y != x)
  44.                         continue;
  45.                     int num = x | y | z;
  46.                     if((a & num) != 0)
  47.                         cnt[num]++;
  48.                 }
  49.     }
  50.     int ans = 0;
  51.     for(int x = 1; x < maxn; x <<= 1)
  52.         for(int y = 1; y < maxn; y <<= 1)
  53.             for(int z = 1; z < maxn; z <<= 1)
  54.                 ans = (ans + get(x, y, z)) % mod;
  55.     cout << ans << "\n";
  56.  
  57. }
Success #stdin #stdout 0.01s 5508KB
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https://ideone.com/dLmckL
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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