Merge pull request #168 from RezwanArefin01/master

Fix redundant copy in rvalue ref overload of `convolution`
atcoder · Jun 19, 2024 · fe9b6fc · fe9b6fc
2 parents 78d9c24 + bc76aab
commit fe9b6fc
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/atcoder/convolution.hpp b/atcoder/convolution.hpp
@@ -223,8 +223,8 @@ std::vector<mint> convolution(std::vector<mint>&& a, std::vector<mint>&& b) {
     int z = (int)internal::bit_ceil((unsigned int)(n + m - 1));
     assert((mint::mod() - 1) % z == 0);
 
-    if (std::min(n, m) <= 60) return convolution_naive(a, b);
-    return internal::convolution_fft(a, b);
+    if (std::min(n, m) <= 60) return convolution_naive(std::move(a), std::move(b));
+    return internal::convolution_fft(std::move(a), std::move(b));
 }
 template <class mint, internal::is_static_modint_t<mint>* = nullptr>
 std::vector<mint> convolution(const std::vector<mint>& a,