diff --git a/algorithms/CPlusPlus/Dynamic-Programming/bookshopcses.cpp b/algorithms/CPlusPlus/Dynamic-Programming/bookshopcses.cpp
index 6f37b910..c28bb897 100644
--- a/algorithms/CPlusPlus/Dynamic-Programming/bookshopcses.cpp
+++ b/algorithms/CPlusPlus/Dynamic-Programming/bookshopcses.cpp
@@ -1,6 +1,8 @@
+//problem link
+//https://cses.fi/problemset/task/1158/
 #include<bits/stdc++.h>
 using namespace std;
- 
+
 //bottom_up approach
  
 void solve()