[ADD] BOJ 20944 팰린드롬 척화비

- 문자열

Author: tdm1223

acmicpc.net/README.md

@@ -560,7 +560,7 @@
 |  71  |           [줄번호](https://www.acmicpc.net/problem/4470)           |  [cpp](source/4470.cpp)   |  72  |       [단어순서 뒤집기](https://www.acmicpc.net/problem/12605)        |  [cpp](source/12605.cpp)  |
 |  73  |        [Cryptoquote](https://www.acmicpc.net/problem/2703)         |  [cpp](source/2703.cpp)   |  74  |            [원피스](https://www.acmicpc.net/problem/12780)            |  [cpp](source/12780.cpp)  |
 |  75  |           [driip](https://www.acmicpc.net/problem/23627)           |  [cpp](source/23627.cpp)  |  76  |        [스키테일 암호](https://www.acmicpc.net/problem/23080)         |  [cpp](source/23080.cpp)  |
-|  77  |      [경로당펑크 2077](https://www.acmicpc.net/problem/25205)      |  [cpp](source/25205.cpp)  |      |                                                                       |                           |
+|  77  |      [경로당펑크 2077](https://www.acmicpc.net/problem/25205)      |  [cpp](source/25205.cpp)  |  78  |       [팰린드롬 척화비](https://www.acmicpc.net/problem/20944)        |  [cpp](source/20944.cpp)  |
 
 </details>
 

acmicpc.net/source/20944.cpp

@@ -0,0 +1,18 @@
+// 20944. 팰린드롬 척화비
+// 2022.10.30
+// 문자열
+#include<iostream>
+
+using namespace std;
+
+int main()
+{
+    int n;
+    cin >> n;
+    for (int i = 0; i < n; i++)
+    {
+        cout << 'a';
+    }
+    cout << endl;
+    return 0;
+}