Submission

Score: 100

User: tha_smith

Problemset: ซื้อขายหุ้นซีเค

Language: cpp

Time: 0.010 second

Submitted On: 2026-02-27 14:01:27

#include <bits/stdc++.h>
using namespace std;
#define ll long long

int main() {
	ios_base::sync_with_stdio(0),cin.tie(0);
	ll N;
	cin >> N;
	vector<ll> p(N+1);
	for(ll i=1; i<=N; i++)
		cin >> p[i];
	ll ans=0;
	for(ll i=1; i<N; i++)
		ans+=max((ll)0,p[i+1]-p[i]);
	cout << ans;
}