Chef and Feedback codechef solution in cpp

#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    int arr[n];
    for (int i = 0; i < n; i++) {
        cin >> arr[i];
    }
    bool isGood = true;
    for (int i = 1; i < n - 1; i++) {
        if (arr[i] <= arr[i-1] || arr[i] <= arr[i+1]) {
            isGood = false;
            break;
        }
    }
    if (n == 1 || (n == 2 && arr[0] == arr[1])) {
        isGood = false;
    }
    if (isGood) {
        cout << "Yes";
    } else {
        cout << "No";
    }
    return 0;
}