[Init] Solved solutions

cpp/520A.cpp

@@ -0,0 +1,37 @@
+#include <iostream>
+#include <string>
+#include <cctype>
+
+using namespace std;
+
+bool check(string s)
+{
+    for (string::iterator it = s.begin(); it != s.end(); it++)
+    {
+        *it = toupper(*it);
+    }
+    for (unsigned char c = 'A'; c <= 'Z'; c++)
+    {
+        if (s.find(c) == -1)
+        {
+            return 0;
+        }
+    }
+    return 1;
+}
+
+int main()
+{
+    unsigned short n;
+    string s;
+    cin >> n >> s;
+    if (check(s))
+    {
+        cout << "YES";
+    }
+    else
+    {
+        cout << "NO";
+    }
+    return 0;
+}