Submission

Score: 0

User: raidina

Problemset: ซื้อขายหุ้นซีเค

Language: cpp

Time: 0.003 second

Submitted On: 2026-03-06 19:35:13

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

const int N = 100001;
int n,a[N],dp[N],sum;
bool ok[N];

int main(){
    cin >> n;

    for(int i = 1;i<=n;i++){
        cin >> a[i];
    }

    for(int i = 1;i<n;i++){
        if(a[i+1]>a[i] && ok[i]==true){
            ok[i+1]=true;
        }
        else if(a[i+1]>a[i] && ok[i]==false){
            sum-=a[i];
            ok[i+1]=true;
        }
        else if(a[i+1]<a[i] && ok[i]==true){
            ok[i+1]=false;
            sum+=a[i];
        }
    }
    cout << sum;
}