diff --git a/problem/P1150/P1150.cpp b/problem/P1150/P1150.cpp
new file mode 100644
index 00000000..2bef7349
--- /dev/null
+++ b/problem/P1150/P1150.cpp
@@ -0,0 +1,10 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int n, k, ans = 0;
+    cin >> n >> k;
+    cout << n + (n - 1) / (k - 1) << endl;
+    return 0;
+}