mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-12-25 20:32:11 +00:00
18 lines
301 B
C++
18 lines
301 B
C++
|
#include <bits/stdc++.h>
|
||
|
|
||
|
using namespace std;
|
||
|
|
||
|
int main() {
|
||
|
long long n, a[1000005], s;
|
||
|
cin >> n;
|
||
|
for (int i = 0; i < n; i++) {
|
||
|
cin >> a[i];
|
||
|
}
|
||
|
s = a[0];
|
||
|
for (int i = 1; i < n; i++) {
|
||
|
s += max(0ll, a[i] - a[i - 1]);
|
||
|
}
|
||
|
cout << s << endl;
|
||
|
return 0;
|
||
|
}
|