using namespace std;

int main(){
    // sqrt(100000) = 316.22..
    for(int squareLength = 317;squareLength*squareLength <= 200000;squareLength++)
    {
        int luas = squareLength*squareLength;
        if ( laus % 2 == 0){
            cout << luas << endl;
            break;
        }
    }
}