diff --git a/cpp/2203/220325-CN.cpp b/cpp/2203/220325-CN.cpp
index 4d23258..0b97d38 100644
--- a/cpp/2203/220325-CN.cpp
+++ b/cpp/2203/220325-CN.cpp
@@ -1,5 +1,10 @@
 #include <iostream>
 
+/**
+ * 172. Factorial Trailing Zeroes
+ * Given an integer n, return the number of trailing zeroes in n!.
+ */
+
 class Solution {
 public:
 	// This algorithm is far NOT optimal.
diff --git a/cpp/2203/220325.cpp b/cpp/2203/220325.cpp
index 76eceaa..80dcfbb 100644
--- a/cpp/2203/220325.cpp
+++ b/cpp/2203/220325.cpp
@@ -2,6 +2,12 @@
 #include <iostream>
 #include <algorithm>
 
+/**
+ * 1029. Two City Scheduling
+ * A company is planning to interview 2n people. Given the array costs where costs[i] = [aCosti, bCosti], the cost of flying the ith person to city a is aCosti, and the cost of flying the ith person to city b is bCosti.
+ * Return the minimum cost to fly every person to a city such that exactly n people arrive in each city.
+ */
+
 class Solution {
 public:
     static int twoCitySchedCost(std::vector<std::vector<int>>& costs) {