diff --git a/revenue.C b/revenue.C
new file mode 100644
index 0000000..a934234
--- /dev/null
+++ b/revenue.C
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main() {
+    int N, K, R;
+    scanf("%d %d %d", &N, &K, &R);
+
+    int remaining = N - K;
+    int revenue = remaining * R;
+
+    printf("%d", revenue);
+
+    return 0;
+}