#include <bits/stdc++.h> using namespace std; void construct_network(int h, int w, int k) { int x = 0, y = 0; vector<int> va; for (int i = 0; i <= 15; i++) { vector<int> v; for (int j = 0; j < h * w; j++) { if (j & (1 << i)) { v.push_back(j); } } if (add_or(v)) { if (add_xor(v)) va.push_back(i); else { x += (1 << i); y += (1 << i); } } } for (int i = 0; i < (1 << v.size()); i++) { int z = x, t = y; for (int j = 0; j < v.size(); j++) { if (i & (1 << j)) z += (1 << v[j]); else t += (1 << v[j]); } if (z < 0 || t < 0 || z >= h * w || t >= h * w || z > t) continue; int u = z / h, v = z % h, uu = t / h, vv = t % h; if (abs(uu - u) + abs(vv - v) != k) continue; if (add_and(z, t)) { return; } } add_and(0, 1); }

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:13:13: error: 'add_or' was not declared in this scope
   13 |         if (add_or(v)) {
      |             ^~~~~~
vision.cpp:14:17: error: 'add_xor' was not declared in this scope
   14 |             if (add_xor(v)) va.push_back(i);
      |                 ^~~~~~~
vision.cpp:21:31: error: 'v' was not declared in this scope
   21 |     for (int i = 0; i < (1 << v.size()); i++) {
      |                               ^
vision.cpp:30:13: error: 'add_and' was not declared in this scope
   30 |         if (add_and(z, t)) {
      |             ^~~~~~~
vision.cpp:34:5: error: 'add_and' was not declared in this scope
   34 |     add_and(0, 1);
      |     ^~~~~~~