diff options
Diffstat (limited to 'math/transforms/all.cpp')
| -rw-r--r-- | math/transforms/all.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/math/transforms/all.cpp b/math/transforms/all.cpp index 4f4d83b..22cd5b5 100644 --- a/math/transforms/all.cpp +++ b/math/transforms/all.cpp @@ -24,8 +24,7 @@ void fft(vector<cplx>& a, bool inverse = 0) { t %= mod; a[j + k] = (u + t) % mod; a[j + s + k] = (u - t + mod) % mod; - w *= ws; - w %= mod;*/ + w = (w * ws) % mod;*/ /*ll u = a[j + k], t = a[j + s + k]; @\hl{xor only}@ a[j + k] = u + t; a[j + s + k] = u - t;*/ @@ -52,8 +51,7 @@ void fft(vector<cplx>& a, bool inverse = 0) { /*if (inverse) { @\hl{NTT only}@ ll div = powMod(n, mod - 2, mod); for (ll i = 0; i < n; i++) { - a[i] *= div; - a[i] %= mod; + a[i] = (a[i] * div) % mod; }}*/ /*if (inverse) { @\hl{xor only}@ for (ll i = 0; i < n; i++) { |