Submission

Score: 100

User: C12

Problemset: ซื้อขายหุ้นซีเค

Language: cpp

Time: 0.012 second

Submitted On: 2026-01-04 12:58:55

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

#define f first
#define s second
#define pii pair<ll,ll>
#define puii pair<ull,ull>
#define piii pair<ll,pii>
#define ll long long
#define ull unsigned long long
#define mp make_pair
 
#define mpiii(a,b,c) make_pair(a,make_pair(b,c));
// ll mod = 1000000007;

void solve(){
    ll n;

    cin >> n;

    ll old,neww;
    ll cnt = 0;

    cin >> old;
    for(int i = 1;i < n;i++){
        cin >> neww;
        if(neww > old){
            cnt += neww-old;
            old = neww;
        }
        old = min(old,neww);
    }

    cout << cnt;

    return;
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    ll q;
 
    // cin >> q;

    // while(q--)
        solve(); 

    return 0;
}