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  1.     start = clock();
  2.     ans = 0;
  3.     for (int i = 0; i < 100 * 1000 * 1000; ++i) {
  4.         for (int x = 0; x < 2; ++x) {
  5.             if ((x + basex >= 0) && (x + basex < size)) {
  6.                 for (int y = 0; y < 2; ++y) {
  7.                     if ((y + basey >= 0) && (y + basey < size)) {
  8.                         for (int z = 0; z < 2; ++z) {
  9.                             if ((z + basez >= 0) && (z + basez < size)) {
  10.                                 ans += v[x + basex][y + basey][z + basez];
  11.                                 ans *= v[x + basex][y + basey][z + basez];
  12.                                 ans ^= v[x + basex][y + basey][z + basez];
  13.                             }
  14.                         }
  15.                     }
  16.                 }
  17.             }
  18.         }
  19.     }
  20.     cout << (clock() - start) / CLOCKS_PER_SEC << endl;
  21.     cout << ans << endl;
  22.     start = clock();
  23.     ans = 0;
  24.     const array<array<int, 3>, 8> delta = {
  25.         0, 0, 0,
  26.         0, 0, 1,
  27.         0, 1, 0,
  28.         0, 1, 1,
  29.         1, 0, 0,
  30.         1, 0, 1,
  31.         1, 1, 0,
  32.         1, 1, 1
  33.     };
  34.     for (int i = 0; i < 100 * 1000 * 1000; ++i) {
  35.         for (auto& t : delta) {
  36.             auto& x = t[0];
  37.             auto& y = t[1];
  38.             auto& z = t[2];
  39.             if ((x + basex < 0) || (x + basex >= size) ||
  40.                     (y + basey < 0) || (y + basey >= size) ||
  41.                     (z + basez < 0) || (z + basez >= size)) {
  42.                 continue;
  43.             }
  44.             ans += v[x + basex][y + basey][z + basez];
  45.             ans *= v[x + basex][y + basey][z + basez];
  46.             ans ^= v[x + basex][y + basey][z + basez];
  47.         }
  48.     }
  49.     cout << (clock() - start) / CLOCKS_PER_SEC << endl;
  50.     cout << ans << endl;
  51.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cpp:1:5: error: ‘start’ does not name a type
     start = clock();
     ^~~~~
prog.cpp:2:5: error: ‘ans’ does not name a type
     ans = 0;
     ^~~
prog.cpp:3:5: error: expected unqualified-id before ‘for’
     for (int i = 0; i < 100 * 1000 * 1000; ++i) {
     ^~~
prog.cpp:3:21: error: ‘i’ does not name a type
     for (int i = 0; i < 100 * 1000 * 1000; ++i) {
                     ^
prog.cpp:3:44: error: expected unqualified-id before ‘++’ token
     for (int i = 0; i < 100 * 1000 * 1000; ++i) {
                                            ^~
stdout
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Standard output is empty
https://ideone.com/7wb1E0
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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