結果
問題 | No.1521 Playing Musical Chairs Alone |
ユーザー |
![]() |
提出日時 | 2021-05-28 22:11:12 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,876 ms / 2,000 ms |
コード長 | 2,892 bytes |
コンパイル時間 | 1,720 ms |
コンパイル使用メモリ | 170,332 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-11-07 09:40:42 |
合計ジャッジ時間 | 27,279 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 23 |
ソースコード
#include <bits/stdc++.h>using namespace std;#ifdef _DEBUG#include "_DEBUG.hpp"#endif#define int long longconst long long inf = 2e18;const int mod = 1e9 + 7;template <typename T>istream &operator>>(istream &is, vector<T> &v) {for (T &in : v) is >> in;return is;}template <class T>vector<T> make_vec(size_t a) {return vector<T>(a);}template <class T, class... Ts>auto make_vec(size_t a, Ts... ts) {return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...));}template <class T, class V>typename enable_if<is_class<T>::value == 0>::type fill(T &t, const V &v) {t = v;}template <class T, class V>typename enable_if<is_class<T>::value != 0>::type fill(T &t, const V &v) {for (auto &e : t) fill(e, v);}template< int mod >struct ModInt {int x;ModInt() : x(0) {}ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}ModInt &operator+=(const ModInt &p) {if((x += p.x) >= mod) x -= mod;return *this;}ModInt &operator-=(const ModInt &p) {if((x += mod - p.x) >= mod) x -= mod;return *this;}ModInt &operator*=(const ModInt &p) {x = (int) (1LL * x * p.x % mod);return *this;}ModInt &operator/=(const ModInt &p) {*this *= p.inverse();return *this;}ModInt operator-() const { return ModInt(-x); }ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }bool operator==(const ModInt &p) const { return x == p.x; }bool operator!=(const ModInt &p) const { return x != p.x; }ModInt inverse() const {int a = x, b = mod, u = 1, v = 0, t;while(b > 0) {t = a / b;swap(a -= t * b, b);swap(u -= t * v, v);}return ModInt(u);}ModInt pow(int64_t n) const {ModInt ret(1), mul(x);while(n > 0) {if(n & 1) ret *= mul;mul *= mul;n >>= 1;}return ret;}friend ostream &operator<<(ostream &os, const ModInt &p) {return os << p.x;}friend istream &operator>>(istream &is, ModInt &a) {int64_t t;is >> t;a = ModInt< mod >(t);return (is);}};using mint = ModInt< 1000000007 >;signed main() {int N, K, L;cin >> N >> K >> L;vector<mint> dp(N * 2 + 1, 0);dp[0] = 1;for (int i = 0; i < K; i++) {vector<mint> nxt(N * 2 + 1, 0);for (int j = 0; j < N; j++) {nxt[j + 1] += dp[j];nxt[j + L + 1] -= dp[j];}for (int j = 0; j < N * 2; j++) {nxt[j + 1] += nxt[j];}for (int j = N; j < N * 2; j++) {nxt[j % N] += nxt[j];}dp.swap(nxt);// cout << dp << endl;}for (int i = 0; i < N; i++) {cout << dp[i] << endl;}return 0;}