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Diffstat (limited to 'math/binomial0.cpp')
| -rw-r--r-- | math/binomial0.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/math/binomial0.cpp b/math/binomial0.cpp index d9af917..896a0f1 100644 --- a/math/binomial0.cpp +++ b/math/binomial0.cpp @@ -10,5 +10,5 @@ void precalc() { ll calc_binom(ll n, ll k) { if (n < 0 || n < k || k < 0) return 0; - return (fac[n] * fac[n-k] % mod) * fac[k] % mod; + return (inv[n] * inv[n-k] % mod) * fac[k] % mod; } |