Add submission link

Author: dwivediprashant

Problems/Mathematics/Day-01/sol/Prashant_dwivedi/Solution2.java

@@ -29,6 +29,9 @@ the sum of exponents (mod k) becomes 0 for every prime.
 O(n)
 ---------------------------------------
 */
+/*---------Problem link--------------------
+https://codeforces.com/problemset/status?my=on
+ */
 
 import java.util.*;