Create C- Theatre Square

Author: eyuuab

C- Theatre Square

@@ -0,0 +1,13 @@
+
+#include <iostream>
+#include<algorithm>
+#include<cmath>
+using namespace std;
+
+int main() {
+unsigned long long n,m,a;
+cin>>n>>m>>a;
+unsigned long long value=ceil((double)m/a)*ceil((double)n/a);
+cout<<value ;
+	return 0;
+}