Index: lib/geo/pythagoras.cpp
==================================================================
--- lib/geo/pythagoras.cpp
+++ lib/geo/pythagoras.cpp
@@ -1,8 +1,15 @@
+
+//-------------------------------------------------------------
 // Enumerate coprime pythagoras triangles
+//
+// Verified by
+//   - SRM 599 Div1 LV2
+//-------------------------------------------------------------
+
 
 for(int m=1;; ++m)
 for(int n=1; n<m; ++n) if(((m^n)&1) && gcd(m,n)==1)
 {
 	int a = m*m-n*n, b = 2*m*n, c = m*m+n*n;
 	if(a>b) swap(a,b);
 }