Increasing Array

#include <iostream>

using namespace std;

int main() {
    int n;

    cin >> n;

    long long int *d = new long long int[n];

    for (int i = 0; i < n; i++) {
        cin >> d[i];
    }

    long long int m = d[0];
    long long int t = 0;

    for (int i = 1; i < n; i++) {
        long long int v0 = d[i];
        if (v0 < m) {
            t += m - d[i];
        } else if(d[i] >= m) {
            m = d[i];
        }
    }

    cout << t << endl;

    delete[] d;

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED