void iterate(const std::vector<int> &dims)
{
std::vector<int> idxs(dims.size());
while (1)
{
// Print
for (int i = 0; i < dims.size(); i++)
{
std::cout << idxs[i] << " ";
}
std::cout << "\n";
// Update
int j;
for (j = 0; j < dims.size(); j++)
{
idxs[j]++;
if (idxs[j] < dims[j]) break;
idxs[j] = 0;
}
if (j == dims.size()) break;
}
}
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