[Add] solved solutions

cpp/CHRL2.cpp

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <cstdio>
+
+using namespace std;
+
+int main()
+{
+    char ch;
+    int c, h, e, f;
+    c = h = e = f = 0;
+    do
+    {
+        ch = getchar();
+        if (ch == 'C')
+        {
+            c++;
+        }
+        else
+        {
+            if (ch == 'H' && c > h)
+            {
+                h++;
+            }
+            else
+            {
+                if (ch == 'E' && h > e)
+                {
+                    e++;
+                }
+                else
+                {
+                    if (ch == 'F' && e > f)
+                    {
+                        f++;
+                    }
+                }
+            }
+        }
+    } while (ch != '\n');
+    cout << f << endl;
+    return 0;
+}