From fe5fa1141efeb7454c763dbd2645fb4ff04487a3 Mon Sep 17 00:00:00 2001
From: mzuenni <michi.zuendorf@gmail.com>
Date: Tue, 28 Mar 2023 13:25:59 +0200
Subject: merged

---
 math/permIndex.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'math/permIndex.cpp')

diff --git a/math/permIndex.cpp b/math/permIndex.cpp
index 09ff7f7..4cffc12 100644
--- a/math/permIndex.cpp
+++ b/math/permIndex.cpp
@@ -6,9 +6,8 @@ ll permIndex(vector<ll> v) {
 		x = t.order_of_key(x);
 	}
 	ll res = 0;
-	for (ll i = sz(v); i > 0; i--) {
-		res *= i;
-		res += v[i - 1];
+	for (int i = sz(v); i > 0; i--) {
+		res = res * i + v[i - 1];
 	}
 	return res;
 }
-- 
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