Index: lib/typical/dp.cpp
==================================================================
--- lib/typical/dp.cpp
+++ lib/typical/dp.cpp
@@ -52,11 +52,11 @@
 		{ i1&=1; return data[ ((i1*N2)+i2)*N3+i3 ]; }
 	void swap(DP3x& rhs)
 		{ data.swap(rhs.data); }
 };
 
-// Not Tested
+// Tested: SRM 520 Lv2
 template<typename T>
 struct DP4
 {
 	int N1, N2, N3, N4;
 	vector<T> data;