哥们，突然发现~~你好蒻啊~~
不知道Py党事什么嘛？
### 禯，下面是Py党们的代码
```py
n = int(input())
l1 = list(map(int,input().split()))
s = 0
for i in range(1,len(l1)):
if l1[i]>l1[i-1]:
s+=l1[i]-l1[i-1]
s+=l1[0]
print(s)
```
震惊了吧？当然还有C++的
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
const int maxn=100005;
int n,l1[maxn],s=0;
scanf("%d",&n);
for(int i=1;i<=n;i++){
cin>>l1[i];
}
for(int i=2;i<=n;i++){
if(l1[i]>l1[i-1]){
s +=l1[i]-l1[i-1];
}
}
printf("%d\n",s+l1[1]);
return 0;
}
```
嗨嗨嗨，走漏~
by I_am_Kun @ 2023-10-18 21:02:00
哈哈哈， 我就是一个蒟蒻！
双扣！
by Gausswing @ 2023-10-21 15:35:45