#include <iostream>
using namespace std;

long long int calculate_area(long long int N, long long int K, long long int L) {
    // The area of the union of the squares is equal to the area of the largest square
    long long int area = (N * K + L) * (N * K + L);
    return area;
}

int main() {
    long long int N, K, L;
    cin >> N >> K >> L;

    long long int area = calculate_area(N, K, L);
    cout << area << endl;
    return 0;
}