#include <iostream>

int merge(int* arr, int to, int el) {
    int i = to;
    int counter = 0;
    while (i >= 0 && arr[i] > el) {
        arr[i + 1] = arr[i];
        i--;
        counter++;
    }
    arr[i + 1] = el;
    return counter;
}

long long electricalEnergy(int* arr, int n) {
    long long sum = 0;

    for (int i = 1; i < n; i++) {
        sum += merge(arr, i - 1, arr[i]);
    }

    return sum;
}

int main() {
    int n;
    std::cin >> n;

    int* arr = new int[n];

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

    std::cout << electricalEnergy(arr, n);

    delete[] arr;
    return 0;
}