1 files changed, 5 insertions, 0 deletions
diff --git a/content/math/discreteNthRoot.cpp b/content/math/discreteNthRoot.cpp
new file mode 100644
index 0000000..403cb3b
--- /dev/null
+++ b/content/math/discreteNthRoot.cpp
@@ -0,0 +1,5 @@
+ll root(ll a, ll b, ll m) { // a > 0!
+	ll g = findPrimitive(m);
+	ll c = dlog(powMod(g, a, m), b, m);
+	return c < 0 ? -1 : powMod(g, c, m);
+}