[Add] solved solutions

cpp/HS08TEST.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+    int x;
+    float y;
+    cin >> x >> y;
+    if (x%5 == 0 && (y - x) > 0.5)
+    {
+        cout << y - (x + 0.5) << endl;
+    }
+    else
+    {
+        cout << y << endl;
+    }
+    return 0;
+}