From 363f03806dfd977d8a76a1270317285398817c60 Mon Sep 17 00:00:00 2001
From: Anthony Wang
Date: Sat, 12 Jun 2021 10:24:47 -0500
Subject: Update numtheory

---
 Math/numtheory.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Math/numtheory.cpp b/Math/numtheory.cpp
index a47a385..282e39f 100644
--- a/Math/numtheory.cpp
+++ b/Math/numtheory.cpp
@@ -1,6 +1,5 @@
 constexpr ll MOD = 1e9+7;
 
-
 inline ll pw(ll base, ll exp) {
 	ll res = 1;
 	while (exp) {
@@ -12,8 +11,7 @@ inline ll pw(ll base, ll exp) {
 inline ll inv(ll x) { return pw(x, MOD-2); }
 
 ll fact[MX] = { 1 }, ifact[MX] = { 1 };
-
 inline ll nCr(int n, int k) { return fact[n]*ifact[k]%MOD*ifact[n-k]%MOD; }
 
 
-for (int i = 0; i < N; ++i) fact[i+1] = (i+1)*fact[i]%MOD, ifact[i+1] = inv(fact[i+1]);
+for (int i = 1; i < N; ++i) fact[i] = i*fact[i-1]%MOD, ifact[i] = inv(fact[i]);
-- 
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