1 files changed, 9 insertions, 0 deletions
diff --git a/math/binomial1.cpp b/math/binomial1.cpp
new file mode 100644
index 0000000..02b27e3
--- /dev/null
+++ b/math/binomial1.cpp
@@ -0,0 +1,9 @@
+ll calc_binom(ll n, ll k) {
+	if (k > n) return 0;
+	ll r = 1;
+	for (ll d = 1; d <= k; d++) {// Reihenfolge => Teilbarkeit
+		r *= n--;
+		r /= d;
+	}
+	return r;
+}