結果

問題 No.1759 Silver Tour
ユーザー tokusakuraitokusakurai
提出日時 2021-11-19 08:46:38
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 6,252 bytes
コンパイル時間 2,197 ms
コンパイル使用メモリ 203,832 KB
実行使用メモリ 4,384 KB
最終ジャッジ日時 2023-09-02 00:11:55
合計ジャッジ時間 3,699 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge13
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
4,384 KB
testcase_01 AC 2 ms
4,380 KB
testcase_02 AC 1 ms
4,376 KB
testcase_03 AC 2 ms
4,380 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 2 ms
4,376 KB
testcase_06 AC 2 ms
4,376 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 1 ms
4,380 KB
testcase_09 AC 1 ms
4,380 KB
testcase_10 AC 2 ms
4,384 KB
testcase_11 AC 1 ms
4,376 KB
testcase_12 AC 2 ms
4,380 KB
testcase_13 AC 2 ms
4,380 KB
testcase_14 AC 1 ms
4,380 KB
testcase_15 AC 2 ms
4,376 KB
testcase_16 AC 1 ms
4,380 KB
testcase_17 AC 2 ms
4,376 KB
testcase_18 AC 1 ms
4,376 KB
testcase_19 AC 1 ms
4,376 KB
testcase_20 AC 1 ms
4,380 KB
testcase_21 AC 2 ms
4,380 KB
testcase_22 AC 1 ms
4,376 KB
testcase_23 AC 2 ms
4,380 KB
testcase_24 AC 2 ms
4,376 KB
testcase_25 AC 2 ms
4,376 KB
testcase_26 AC 2 ms
4,380 KB
testcase_27 AC 2 ms
4,380 KB
testcase_28 AC 2 ms
4,380 KB
testcase_29 AC 1 ms
4,380 KB
testcase_30 AC 1 ms
4,380 KB
testcase_31 AC 1 ms
4,380 KB
testcase_32 AC 2 ms
4,376 KB
testcase_33 AC 2 ms
4,380 KB
testcase_34 AC 1 ms
4,380 KB
testcase_35 AC 1 ms
4,380 KB
testcase_36 AC 1 ms
4,376 KB
testcase_37 AC 2 ms
4,380 KB
testcase_38 AC 1 ms
4,380 KB
testcase_39 AC 2 ms
4,380 KB
testcase_40 AC 2 ms
4,376 KB
testcase_41 AC 2 ms
4,376 KB
testcase_42 AC 2 ms
4,380 KB
testcase_43 AC 1 ms
4,376 KB
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;
#define rep(i, n) for (int i = 0; i < n; i++)
#define rep2(i, x, n) for (int i = x; i <= n; i++)
#define rep3(i, x, n) for (int i = x; i >= n; i--)
#define each(e, v) for (auto &e : v)
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;

template <typename T>
bool chmax(T &x, const T &y) {
    return (x < y) ? (x = y, true) : false;
}

template <typename T>
bool chmin(T &x, const T &y) {
    return (x > y) ? (x = y, true) : false;
}

template <typename T>
int flg(T x, int i) {
    return (x >> i) & 1;
}

template <typename T>
void print(const vector<T> &v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' ');
    if (v.empty()) cout << '\n';
}

template <typename T>
void printn(const vector<T> &v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cout << v[i] + x << '\n';
}

template <typename T>
int lb(const vector<T> &v, T x) {
    return lower_bound(begin(v), end(v), x) - begin(v);
}

template <typename T>
int ub(const vector<T> &v, T x) {
    return upper_bound(begin(v), end(v), x) - begin(v);
}

template <typename T>
void rearrange(vector<T> &v) {
    sort(begin(v), end(v));
    v.erase(unique(begin(v), end(v)), end(v));
}

template <typename T>
vector<int> id_sort(const vector<T> &v, bool greater = false) {
    int n = v.size();
    vector<int> ret(n);
    iota(begin(ret), end(ret), 0);
    sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; });
    return ret;
}

template <typename S, typename T>
pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) {
    return make_pair(p.first + q.first, p.second + q.second);
}

template <typename S, typename T>
pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) {
    return make_pair(p.first - q.first, p.second - q.second);
}

template <typename S, typename T>
istream &operator>>(istream &is, pair<S, T> &p) {
    S a;
    T b;
    is >> a >> b;
    p = make_pair(a, b);
    return is;
}

template <typename S, typename T>
ostream &operator<<(ostream &os, const pair<S, T> &p) {
    return os << p.first << ' ' << p.second;
}

struct io_setup {
    io_setup() {
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        cout << fixed << setprecision(15);
    }
} io_setup;

const int inf = (1 << 30) - 1;
const ll INF = (1LL << 60) - 1;
const int MOD = 1000000007;
// const int MOD = 998244353;

struct Runtime_Mod_Int {
    int x;

    Runtime_Mod_Int() : x(0) {}

    Runtime_Mod_Int(long long y) {
        x = y % get_mod();
        if (x < 0) x += get_mod();
    }

    static inline int &get_mod() {
        static int mod = 0;
        return mod;
    }

    static void set_mod(int md) { get_mod() = md; }

    Runtime_Mod_Int &operator+=(const Runtime_Mod_Int &p) {
        if ((x += p.x) >= get_mod()) x -= get_mod();
        return *this;
    }

    Runtime_Mod_Int &operator-=(const Runtime_Mod_Int &p) {
        if ((x += get_mod() - p.x) >= get_mod()) x -= get_mod();
        return *this;
    }

    Runtime_Mod_Int &operator*=(const Runtime_Mod_Int &p) {
        x = (int)(1LL * x * p.x % get_mod());
        return *this;
    }

    Runtime_Mod_Int &operator/=(const Runtime_Mod_Int &p) {
        *this *= p.inverse();
        return *this;
    }

    Runtime_Mod_Int &operator++() { return *this += Runtime_Mod_Int(1); }

    Runtime_Mod_Int operator++(int) {
        Runtime_Mod_Int tmp = *this;
        ++*this;
        return tmp;
    }

    Runtime_Mod_Int &operator--() { return *this -= Runtime_Mod_Int(1); }

    Runtime_Mod_Int operator--(int) {
        Runtime_Mod_Int tmp = *this;
        --*this;
        return tmp;
    }

    Runtime_Mod_Int operator-() const { return Runtime_Mod_Int(-x); }

    Runtime_Mod_Int operator+(const Runtime_Mod_Int &p) const { return Runtime_Mod_Int(*this) += p; }

    Runtime_Mod_Int operator-(const Runtime_Mod_Int &p) const { return Runtime_Mod_Int(*this) -= p; }

    Runtime_Mod_Int operator*(const Runtime_Mod_Int &p) const { return Runtime_Mod_Int(*this) *= p; }

    Runtime_Mod_Int operator/(const Runtime_Mod_Int &p) const { return Runtime_Mod_Int(*this) /= p; }

    bool operator==(const Runtime_Mod_Int &p) const { return x == p.x; }

    bool operator!=(const Runtime_Mod_Int &p) const { return x != p.x; }

    Runtime_Mod_Int inverse() const {
        assert(*this != Runtime_Mod_Int(0));
        return pow(get_mod() - 2);
    }

    Runtime_Mod_Int pow(long long k) const {
        Runtime_Mod_Int now = *this, ret = 1;
        for (; k > 0; k >>= 1, now *= now) {
            if (k & 1) ret *= now;
        }
        return ret;
    }

    friend ostream &operator<<(ostream &os, const Runtime_Mod_Int &p) { return os << p.x; }

    friend istream &operator>>(istream &is, Runtime_Mod_Int &p) {
        long long a;
        is >> a;
        p = Runtime_Mod_Int(a);
        return is;
    }
};

using mint = Runtime_Mod_Int;

int main() {
    int H, W, M;
    cin >> H >> W >> M;

    mint::set_mod(M);

    if (W == 1) {
        cout << mint(1) << '\n';
        return 0;
    }

    if (H & 1) {
        cout << "0\n";
        return 0;
    }

    vector<vector<mint>> dp(H, vector<mint>(W, 0));
    rep(i, W) dp[0][i] = 1;

    rep(i, H / 2) {
        rep(j, W) {
            if (j % 2 == 0) {
                for (int k = W - 1; k > j; k -= 2) dp[2 * i + 1][k] += dp[2 * i][j];
                if (j == W - 1) dp[2 * i + 1][j] += dp[2 * i][j];
            }
            if ((W - 1 - j) % 2 == 0) {
                for (int k = 0; k < j; k += 2) dp[2 * i + 1][k] += dp[2 * i][j];
                if (j == 0) dp[2 * i + 1][j] += dp[2 * i][j];
            }
        }
        if (i < (H / 2) - 1) {
            rep(j, W) {
                rep2(k, -1, 1) {
                    if (j + k < 0 || j + k >= W) continue;
                    dp[2 * i + 2][j + k] += dp[2 * i + 1][j];
                }
            }
        }
    }

    cout << accumulate(all(dp[H - 1]), mint(0)) << '\n';
}
0