結果

問題 No.1771 A DELETEQ
ユーザー sten_sansten_san
提出日時 2022-01-19 05:00:13
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 261 ms / 3,500 ms
コード長 2,987 bytes
コンパイル時間 2,027 ms
コンパイル使用メモリ 207,024 KB
実行使用メモリ 65,792 KB
最終ジャッジ日時 2024-11-23 13:39:41
合計ジャッジ時間 5,015 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 260 ms
65,792 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 261 ms
65,792 KB
testcase_05 AC 260 ms
65,536 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 2 ms
5,248 KB
testcase_08 AC 2 ms
5,248 KB
testcase_09 AC 46 ms
13,696 KB
testcase_10 AC 36 ms
11,776 KB
testcase_11 AC 28 ms
9,600 KB
testcase_12 AC 24 ms
8,832 KB
testcase_13 AC 32 ms
10,752 KB
testcase_14 AC 91 ms
24,832 KB
testcase_15 AC 128 ms
33,536 KB
testcase_16 AC 129 ms
33,920 KB
testcase_17 AC 10 ms
5,248 KB
testcase_18 AC 45 ms
13,440 KB
testcase_19 AC 5 ms
5,248 KB
testcase_20 AC 83 ms
23,424 KB
testcase_21 AC 13 ms
6,016 KB
testcase_22 AC 31 ms
10,496 KB
testcase_23 AC 42 ms
13,312 KB
testcase_24 AC 11 ms
5,376 KB
testcase_25 AC 6 ms
5,248 KB
testcase_26 AC 79 ms
21,632 KB
testcase_27 AC 27 ms
9,216 KB
testcase_28 AC 8 ms
5,248 KB
evil_hand_1.txt WA -
evil_hand_2.txt WA -
evil_hand_3.txt WA -
evil_random_1.txt WA -
evil_random_2.txt WA -
evil_random_3.txt WA -
evil_random_4.txt WA -
evil_random_5.txt WA -
evil_random_6.txt WA -
evil_random_7.txt WA -
evil_random_8.txt WA -
evil_random_9.txt WA -
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;

struct iofast_t {
    iofast_t() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} iofast;

struct uns_t {} uns;
template <typename Element, typename Head, typename ...Args>
auto vec(Element init, Head arg, Args ...args) {
    if constexpr (sizeof...(Args) == 0) return vector(arg, init);
    else return vector(arg, vec(init, args...));
}
template <typename Element, typename Head, typename ...Args>
auto vec(uns_t, Head arg, Args ...args) {
    return vec(Element(), arg, args...);
}

template <typename Container>
auto distance(const Container &c, decltype(begin(c)) iter) {
    return distance(begin(c), iter);
}

template <typename RIter, typename Compare = less<typename iterator_traits<RIter>::value_type>>
auto isort(RIter first, RIter last, Compare comp = Compare()) {
    vector<int> i(distance(first, last));
    iota(begin(i), end(i), 0);
    sort(begin(i), end(i), [&](auto x, auto y) {
        return comp(*(first + x), *(first + y));
    });
    return i;
}

template <typename, template <typename> typename, typename = void_t<>>
struct detect : false_type {};
template <typename T, template <typename> typename Check>
struct detect<T, Check, void_t<Check<T>>> : true_type {};
template <typename T, template <typename> typename Check>
constexpr inline bool detect_v = detect<T, Check>::value;

template <typename T>
using has_member_sort = decltype(declval<T>().sort());

template <typename Container, typename Compare = less<typename Container::value_type>>
auto sorted(Container c, Compare comp = Compare()) {
    if constexpr (detect_v<Container, has_member_sort>) {
        c.sort(comp);
        return c;
    }
    else {
        sort(begin(c), end(c), comp);
        return c;
    }
}

template <typename Container, typename Compare = equal_to<typename Container::value_type>>
auto uniqued(Container c, Compare comp = Compare()) {
    c.erase(unique(begin(c), end(c), comp), end(c));
    return c;
}

template <typename T, typename Compare = less<T>>
T &chmin(T &l, T r, Compare &&f = less<T>()) { return l = min(l, r, f); }
template <typename T, typename Compare = less<T>>
T &chmax(T &l, T r, Compare &&f = less<T>()) { return l = max(l, r, f); }

#include <atcoder/modint>
using mint = atcoder::modint998244353;

int main() {
    constexpr auto lim = 4000;

    int x, y; cin >> x >> y;

    if (lim < max(x, y)) {
        return 0;
    }

    auto dp = vec<mint>(0, x + 1, y + 1);

    dp[0][0] = 1;
    for (int i = 0; i <= x; ++i) {
        for (int j = 0; j <= y; ++j) {
            if (0 <= i - 1) {
                dp[i][j] += dp[i - 1][j];
            }
            if (0 <= j - 1) {
                dp[i][j] += dp[i][j - 1];
            }
            if (0 <= min(i - 1, j - 1)) {
                dp[i][j] += 2 * dp[i - 1][j - 1];

                if (i == j) {
                    dp[i][j] += 1;
                }
            }
        }
    }

    cout << dp[x][y].val() << endl;
}

0