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| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
| commit | 98567ec798aa8ca2cfbcb85c774dd470f30e30d4 (patch) | |
| tree | 5113d5cc24d1ad5f93810b6442ce584a36950dc8 /content/math/transforms/andTransform.cpp | |
| parent | ad3856a6b766087df0036de0b556f4700a6498c9 (diff) | |
| parent | 8d11c6c8213f46f0fa19826917c255edd5d43cb1 (diff) | |
mzuenni tests
Diffstat (limited to 'content/math/transforms/andTransform.cpp')
| -rw-r--r-- | content/math/transforms/andTransform.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/content/math/transforms/andTransform.cpp b/content/math/transforms/andTransform.cpp new file mode 100644 index 0000000..1fd9f5c --- /dev/null +++ b/content/math/transforms/andTransform.cpp @@ -0,0 +1,8 @@ +void fft(vector<ll>& a, bool inv = false) { + int n = sz(a); + for (int s = 1; s < n; s *= 2) { + for (int i = 0; i < n; i += 2 * s) { + for (int j = i; j < i + s; j++) { + ll& u = a[j], &v = a[j + s]; + tie(u, v) = inv ? pair(v - u, u) : pair(v, u + v); +}}}} |