Submission

Score: 70

User: erng

Problemset: ปริมาตรน้ำท่วม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-07 21:27:39

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

int n, arr[10005], mx, ans;

int main()
{
    cin>>n;
    for (int i=0; i<n; i++)
    {
        cin>>arr[i];
    }
    mx=arr[0];
    for (int i=1; i<n-1; i++)
    {
        if (mx>arr[i]) ans+=mx-arr[i];
        else mx=arr[i];
    }
    cout<<ans;
}