Submission

Score: 100

User: Bune

Problemset: ซื้อขายหุ้นซีเค

Language: cpp

Time: 0.009 second

Submitted On: 2026-03-04 11:18:43

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;

#define fastio ios_base::sync_with_stdio(false); cin.tie(nullptr);
#define ll long long
#define pb push_back
#define all(x) (x).begin(), (x).end()

int main() {
  fastio

  int n;
  cin >> n;

  vector<int> v;

  for (int i = 0; i < n; i++) {
    int a;
    cin >> a;
    v.pb(a);
  }

  ll sum = 0;

  for (int i = 0; i < n; i++) {
    if (i == 0) continue;
    if (v[i] > v[i - 1]) {
      sum += v[i] - v[i - 1];
    }
  }

  cout << sum << "\n";

  return 0;
}