Added my works from 2022

alg_4_1.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+using namespace std;
+
+int gcd_recur(int n1, int n2)
+{
+	if (n1 == n2)
+	{
+		return n1;
+	}
+	
+	if (n1 > n2)
+	{
+		return gcd_recur(n1-n2, n2);
+	}
+	else
+	{
+		return gcd_recur(n1, n2-n1);
+	}
+}
+
+int main()
+{
+	int a, b;
+	cin >> a >> b;
+
+	cout << gcd_recur(a, b);
+}