1 files changed, 0 insertions, 12 deletions
diff --git a/math/transforms/multiplyFFT.cpp b/math/transforms/multiplyFFT.cpp
deleted file mode 100644
index 0022d1f..0000000
--- a/math/transforms/multiplyFFT.cpp
+++ /dev/null
@@ -1,12 +0,0 @@
-vector<ll> mul(vector<ll>& a, vector<ll>& b) {
-	int n = 1 << (__lg(sz(a) + sz(b) - 1) + 1);
-	vector<cplx> a2(all(a)), b2(all(b));
-	a2.resize(n), b2.resize(n);
-	fft(a2), fft(b2);
-	for (int i=0; i<n; i++) a2[i] *= b2[i];
-	fft(a2, true);
-
-	vector<ll> ans(n);
-	for (int i=0; i<n; i++) ans[i] = llround(a2[i].real());
-	return ans;
-}