import java.util.ArrayList;

import java.util.HashMap;

import java.util.HashSet;

public class Race {

ArrayList<Car> cars;

int distance;

Car winner;

Race(HashSet<Car> cars, int distance) {

this.cars = new ArrayList<>(cars);

this.distance = distance;

}

public Car run() {

int maxMileage = 0;

int carMileage;

for (Car car : cars) {

carMileage = car.speed * distance;

if (carMileage > maxMileage) {

maxMileage = carMileage;

winner = car;

}

}

return winner;

}

}