Условие
Показать переводYou may select any subset of the supplied coins. Each individual coin may be used at most once, even when multiple coins share a value. Find the smallest positive integer amount that no selection can produce.
Implement missing_coin_sum(coins).
Input
coins: The values of the available coins; duplicates represent separate coins.
Output
Return the smallest positive impossible amount.
Ограничения
1 ≤ number of coins ≤ 200,000. Each value is between 1 and 1,000,000,000.
Примеры
Ввод:
coins = [1, 1, 4]
Ожидаемый вывод:
expected = 3
Ввод:
std::vector<long long> coins = {1, 1, 4};
Ожидаемый вывод:
long long expected = 3;
Ввод:
long[] coins = new long[] {1, 1, 4};
Ожидаемый вывод:
long expected = 3;
Пояснение
Amounts 1 and 2 use the one-valued coins. No available subset totals 3.
Ввод:
coins = [2, 3]
Ожидаемый вывод:
expected = 1
Ввод:
std::vector<long long> coins = {2, 3};
Ожидаемый вывод:
long long expected = 1;
Ввод:
long[] coins = new long[] {2, 3};
Ожидаемый вывод:
long expected = 1;
Пояснение
There is no way to make 1 because every coin is worth at least 2.
Ссылки
Это задание адаптировано для CodeUtility. Следуйте условию и ограничениям выше.