From 35668d8e4ed26194b66b28bf6c1c3051eaaf7e05 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Mon, 19 Oct 2020 20:06:06 +0800
Subject: [PATCH] =?UTF-8?q?P4445=20[AHOI2018=E5=88=9D=E4=B8=AD=E7=BB=84]?=
 =?UTF-8?q?=E6=8A=A5=E5=90=8D=E7=AD=BE=E5=88=B0?=
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R40110902
---
 problem/P4445/P4445.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 problem/P4445/P4445.cpp

diff --git a/problem/P4445/P4445.cpp b/problem/P4445/P4445.cpp
new file mode 100644
index 00000000..d89ed420
--- /dev/null
+++ b/problem/P4445/P4445.cpp
@@ -0,0 +1,17 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int n, a[100005];
+    long long ans=0;
+    cin >> n;
+    for(int i = 0 ; i < n ; i++) {
+        cin >> a[i];
+    }
+    for(int i = 1 ; i < n ; i++) {
+        ans += max(a[i], a[i-1]);
+    }
+    cout << ans << endl;
+    return 0;
+}