From 5ab8a5088b729a9953b8dff1b2a985dc8fb2098b Mon Sep 17 00:00:00 2001
From: mzuenni <michi.zuendorf@gmail.com>
Date: Mon, 27 Jun 2022 17:19:28 +0200
Subject: updated tcr

---
 math/modMulIterativ.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 math/modMulIterativ.cpp

(limited to 'math/modMulIterativ.cpp')

diff --git a/math/modMulIterativ.cpp b/math/modMulIterativ.cpp
new file mode 100644
index 0000000..611f09a
--- /dev/null
+++ b/math/modMulIterativ.cpp
@@ -0,0 +1,9 @@
+ll mulMod(ll a, ll b, ll n) {
+	ll res = 0;
+	while (b > 0) {
+		if (b & 1) res = (a + res) % n;
+		a = (a * 2) % n;
+		b /= 2;
+	}
+	return res;
+}
-- 
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