Submission

Score: 100

User: 555eiei

Problemset: ซื้อขายหุ้นซีเค

Language: cpp

Time: 0.009 second

Submitted On: 2025-11-05 18:23:07

#include <bits/stdc++.h>

using namespace std;

int main(){
    cin.tie(nullptr)->sync_with_stdio(0);
    int n; cin >> n;
    vector<int> a(n);
    vector<int> diff(n);
    for (auto &x : a) cin >> x;
    for (int i=1; i<n; i++) diff[i] = a[i] - a[i-1];
    long long ans = 0;
    for (auto x : diff) if (x > 0) ans += x;
    cout << ans;
    return 0;
}