Merge pull request #88 from AlgoLeadMe/22-LJEDD2

22-LJEDD2
AlgoLeadMe · Mar 9, 2024 · 2a472fb · 2a472fb
2 parents ad6feda + b3904ac
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diff --git a/LJEDD2/README.md b/LJEDD2/README.md
@@ -23,4 +23,5 @@
 | 19차시 | 2024.02.24 |  구현  | <a href="https://www.acmicpc.net/problem/16919">봄버맨 2</a>  | [#76](https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/76) |
 | 20차시 | 2024.02.27 |  BFS  | <a href="https://www.acmicpc.net/problem/6593">상범 빌딩 2</a>  | [#80](https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/80) |
 | 21차시 | 2024.03.01 |  정수론  | <a href="https://www.acmicpc.net/problem/21920">서로소 평균 2</a>  | [#83](https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/83) |
+| 22차시 | 2024.03.04 |  수학(애드 혹)  | <a href="https://www.acmicpc.net/problem/28419">더하기 </a>  | [#88](https://github.com/AlgoLeadMe/AlgoLeadMe-4/pull/88) |
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diff --git a/LJEDD2/애드 혹/더하기.py b/LJEDD2/애드 혹/더하기.py
@@ -0,0 +1,10 @@
+n = int(input())
+n_list = list(map(int,input().split()))
+diff = sum(n_list[1::2]) - sum(n_list[::2])
+
+# N=3이고 홀수합이 더 많다면 불가능
+if n == 3 and diff < 0 :
+    print(-1)
+# 그 외에는 절댓값의 차이 만큼 +1
+else:
+    print(abs(diff))