diff --git a/cpp/exam.cpp b/cpp/exam.cpp
index f647400..52a9854 100644
--- a/cpp/exam.cpp
+++ b/cpp/exam.cpp
@@ -1,3 +1,4 @@
+// This solution is WIP. Not get full point.
 #include <bits/stdc++.h>
 using namespace std;
 
diff --git a/cpp/prevoi19_robots.cpp b/cpp/prevoi19_robots.cpp
index b21b70a..186af9b 100644
--- a/cpp/prevoi19_robots.cpp
+++ b/cpp/prevoi19_robots.cpp
@@ -1,3 +1,4 @@
+// This solution is WIP. Not get full point.
 #include <iostream>
 #include <vector>
 #include <algorithm>