結果

問題 No.563 超高速一人かるた large
ユーザー はまやんはまやんはまやんはまやん
提出日時 2017-08-28 11:21:22
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 6,113 bytes
コンパイル時間 2,200 ms
コンパイル使用メモリ 188,328 KB
実行使用メモリ 45,856 KB
最終ジャッジ日時 2024-11-06 08:19:59
合計ジャッジ時間 10,870 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 WA -
testcase_01 WA -
testcase_02 AC 3 ms
6,820 KB
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 TLE -
testcase_10 -- -
testcase_11 -- -
testcase_12 -- -
testcase_13 -- -
testcase_14 -- -
testcase_15 -- -
testcase_16 -- -
testcase_17 -- -
testcase_18 -- -
testcase_19 -- -
testcase_20 -- -
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>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------
template<int MOD> struct ModInt {
    static const int Mod = MOD; unsigned x; ModInt() : x(0) { }
    ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }
    ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }
    int get() const { return (int)x; }
    ModInt &operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; }
    ModInt &operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; }
    ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; }
    ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }
    ModInt operator+(ModInt that) const { return ModInt(*this) += that; }
    ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }
    ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }
    ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }
    ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0;
        while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); }
        return ModInt(u); }
    bool operator==(ModInt that) const { return x == that.x; }
    bool operator!=(ModInt that) const { return x != that.x; }
    ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; }
};
template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; };
template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) {
    ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; }
template<typename T, int FAC_MAX> struct Comb { vector<T> fac, ifac;
    Comb() {fac.resize(FAC_MAX, 1); ifac.resize(FAC_MAX, 1);rep(i, 1, FAC_MAX) fac[i] = fac[i - 1] * i;
        rep(i, 1, FAC_MAX) ifac[i] = T(1) / fac[i];}
    T aPb(int a, int b) { if (b < 0 || a < b) return T(0); return fac[a] * ifac[a - b]; }
    T aCb(int a, int b) { if (b < 0 || a < b) return T(0); return fac[a] * ifac[a - b] * ifac[b]; }
    T nHk(int n, int k) { if (n == 0 && k == 0) return T(1); if (n <= 0 || k < 0) return 0;
        return aCb(n + k - 1, k); }
};
struct Trie {
    struct Node { int cnt, dep, hit; string str; Node* c[26]; Node() { cnt = dep = hit = 0; str = ""; rep(i, 0, 26) c[i] = 0; } };
    Node* root; Trie() { root = new Node(); }
    void add(string x) { update(root, x); }
    void update(Node*& x, string a, int b = 0) {
        if (!x) x = new Node(); x->cnt++; x->dep = b;
        x->str = a.substr(0, b); // <- you can erase this
        if (b == a.length()) { x->str = a; x->hit = 1; return; } update(x->c[a[b] - 'a'], a, b + 1);
    }
    void dump() { dump(root); }
    void dump(Node*& x) {
        printf("%d [cnt:%d,dep:%d,hit:%d,str:%s]", x, x->cnt, x->dep, x->hit, x->str.c_str());
        rep(i, 0, 26) {
            if (x->c[i]) printf(" (%c -> %d)", char('a' + i), x->c[i]);
        } printf("\n");

        rep(i, 0, 26) if (x->c[i]) dump(x->c[i]);
    }

    void getAllBranchDfs(Node* cu, vector<Node*> &res) {
        int cnt = 0;
        rep(i, 0, 26) if (cu->c[i]) cnt++;
        if (2 <= cnt) res.push_back(cu);
        rep(i, 0, 26) if (cu->c[i]) getAllBranchDfs(cu->c[i], res);
    }
    vector<Node*> getAllBranch() {
        vector<Node*> res;
        getAllBranchDfs(root, res);
        return res;
    }
    void getAllHitsDfs(Node* cu, vector<Node*> &res) {
        if (cu->hit) res.push_back(cu);
        rep(i, 0, 26) if (cu->c[i]) getAllBranchDfs(cu->c[i], res);
    }
    vector<Node*> getAllHits() {
        vector<Node*> res;
        getAllHitsDfs(root, res);
        return res;
    }
};
typedef ModInt<1000000007> mint;
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/




Comb<mint, 2020> com;
int N; string S[2020];
mint ans[2020];
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N;
    rep(i, 0, N) cin >> S[i];

    Trie trie;
    rep(i, 0, N) trie.add(S[i]);
    //trie.dump();

    auto v = trie.getAllBranch();
    fore(node, v) {
        //printf("! %s\n", node->str.c_str());
        rep(i, 0, 26) if (node->c[i]) {
            int c = node->c[i]->cnt;
            int cc = node->cnt - c;
            int other = N - node->cnt;

            mint res = node->c[i]->dep;
            rep(j, 0, other + 1) rep(k, 0, cc) {
                mint co = com.aPb(c, c - 1) * com.aPb(other, j) * com.aPb(cc, k) * com.fac[c - 1 + j + k] * com.ifac[j] * com.ifac[k] * com.ifac[c - 1];
                mint d = res * co;
                ans[c + j + k] += d;
                //printf("%d : %d %d\n", c + j, res.get(), co.get());
            }
        }
    }

    v = trie.getAllHits();
    fore(node, v) {
        mint res = node->dep + 1;
        int c = node->cnt;
        int other = N - c;
        rep(j, 0, other + 1) rep(k, 0, c - 1) {
            mint co = com.aPb(c - 1, k) * com.aPb(other, j) * com.aCb(k + j, j);
            mint d = res * co;
            ans[j + k + 1] += d;
            //printf("%d : %d %d\n", c + j, res.get(), co.get());
        }
    }

    rep(i, 2, N + 1) ans[i] += ans[i - 1] * (N - i + 1);
    ans[N] += com.fac[N];
    rep(i, 1, N + 1) printf("%d\n", ans[i].get());
}
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