結果

問題 No.2733 Just K-times TSP
ユーザー ecottea
提出日時 2024-04-19 22:57:09
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,531 ms / 2,000 ms
コード長 12,087 bytes
コンパイル時間 5,128 ms
コンパイル使用メモリ 289,320 KB
最終ジャッジ日時 2025-02-21 05:12:46
ジャッジサーバーID
(参考情報)
judge3 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 32
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 #
プレゼンテーションモードにする

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; using ull = unsigned long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
int DX[4] = {1, 0, -1, 0}; // 4
int DY[4] = {0, 1, 0, -1};
int INF = 1001001001; ll INFL = 4004004003094073385LL; // (int)INFL = INF, (int)(-INFL) = -INF;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d
#define repis(i, set) for(int i = lsb(set), bset##i = set; i >= 0; bset##i -= 1 << i, i = lsb(bset##i)) // set
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) //
//
template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T getb(T set, int i) { return (set >> i) & T(1); }
template <class T> inline T smod(T n, T m) { n %= m; if (n < 0) n += m; return n; } // mod
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#ifdef _MSC_VER
#include "localACL.hpp"
#endif
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
namespace atcoder {
inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>; using pim = pair<int, mint>;
#endif
#ifdef _MSC_VER // Visual Studio
#include "local.hpp"
#else // gcc
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#endif
//O(n + m)
/*
* (, ) n m
*
* n :
* m : n-1
* directed : false
* zero_indexed : 0-indexed false
*/
Graph read_Graph(int n, int m = -1, bool directed = false, bool zero_indexed = false) {
// verify : https://atcoder.jp/contests/tessoku-book/tasks/tessoku_book_bi
Graph g(n);
if (m == -1) m = n - 1;
rep(j, m) {
int a, b;
cin >> a >> b;
if (!zero_indexed) { --a; --b; }
g[a].push_back(b);
if (!directed && a != b) g[b].push_back(a);
}
return g;
}
//O(n^2)
/*
* g 0-1 adj[0..n)[0..n)
*/
vvi adjacency_matrix(const Graph& g) {
int n = sz(g);
vvi adj(n, vi(n));
rep(s, n) repe(t, g[s]) adj[s][t] = 1;
return adj;
}
void TLE() {
int n, m, k;
cin >> n >> m >> k;
auto g = read_Graph(n, m);
auto a = adjacency_matrix(g);
// (from, to, seen) → cnt
map<tuple<int, int, vi>, mint> dp;
rep(v, n) {
vi c(n);
c[v] = 1;
dp[{v, v, c}] = 1;
}
function<mint(int, int, vi)> rf = [&](int s, int t, vi c) {
if (dp.count({ s, t, c })) return dp[{s, t, c}];
if (c[t] == 0) return mint(0);
mint res = 0;
c[t]--;
rep(v, n) {
if (a[v][t] == 0) continue;
res += rf(s, v, c);
}
c[t]++;
return dp[{s, t, c}] = res;
};
vi c_all(n, k);
mint res = 0;
rep(s, n) rep(t, n) res += rf(s, t, c_all);
// dumpel(dp);
cout << res << endl;
}
void TLE2() {
int n, m, k;
cin >> n >> m >> k;
auto g = read_Graph(n, m);
auto a = adjacency_matrix(g);
// (from, to, seen) → cnt
map<array<int, 8>, mint> dp;
rep(v, n) {
array<int, 8> vvc;
vvc[0] = vvc[1] = v;
repi(i, 2, 2 + n - 1) vvc[i] = 0;
vvc[2 + v] = 1;
dp[vvc] = 1;
}
function<mint(array<int, 8>)> rf = [&](array<int, 8> stc) {
if (dp.count(stc)) return dp[stc];
int t = stc[1];
if (stc[2 + t] == 0) return mint(0);
mint res = 0;
stc[2 + t]--;
rep(v, n) {
if (a[v][t] == 0) continue;
auto svc(stc);
svc[1] = v;
res += rf(svc);
}
stc[2 + t]++;
return dp[stc] = res;
};
vi c_all(n, k);
mint res = 0;
rep(s, n) rep(t, n) {
array<int, 8> stc;
stc[0] = s;
stc[1] = t;
repi(i, 2, 2 + n - 1) stc[i] = k;
res += rf(stc);
}
// dumpel(dp);
cout << res << endl;
}
//unordered
/*
* unordered_set[map] [] Hash 使
*/
struct Hash {
// : https://qiita.com/ganyariya/items/df35d253726269bda436
// verify : https://yukicoder.me/problems/no/1648
// pair<int, ll>
size_t operator()(const array<int, 8>& p) const {
size_t seed = 0;
rep(i, 8) seed ^= hash<int>{}(p[i]) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
return seed;
}
};
void TLE3() {
int n, m, k;
cin >> n >> m >> k;
auto g = read_Graph(n, m);
auto a = adjacency_matrix(g);
// (from, to, seen) → cnt
unordered_map<array<int, 8>, mint, Hash> dp;
rep(v, n) {
array<int, 8> vvc;
vvc[0] = vvc[1] = v;
repi(i, 2, 2 + n - 1) vvc[i] = 0;
vvc[2 + v] = 1;
dp[vvc] = 1;
}
function<mint(array<int, 8>)> rf = [&](array<int, 8> stc) {
if (dp.count(stc)) return dp[stc];
int t = stc[1];
if (stc[2 + t] == 0) return mint(0);
mint res = 0;
stc[2 + t]--;
rep(v, n) {
if (a[v][t] == 0) continue;
auto svc(stc);
svc[1] = v;
res += rf(svc);
}
stc[2 + t]++;
return dp[stc] = res;
};
vi c_all(n, k);
mint res = 0;
rep(s, n) rep(t, n) {
array<int, 8> stc;
stc[0] = s;
stc[1] = t;
repi(i, 2, 2 + n - 1) stc[i] = k;
res += rf(stc);
}
// dumpel(dp);
cout << res << endl;
}
//
/*
* 0 [0..n) b[0..n)
* val i d[i] d[0..n)
*/
template <class T>
vector<T> mixed_radix_form(const vector<T>& b, ll val) {
// verify : https://atcoder.jp/contests/abc231/tasks/abc231_e
int n = sz(b);
vector<T> d(n);
rep(i, n) {
d[i] = (T)(val % b[i]);
val /= b[i];
}
return d;
}
//
/*
* 0 [0..n) b[0..n)
* i d[i] d[0..n)
*/
template <class T>
ll from_mixed_radix_form(const vector<T>& b, const vector<T>& d) {
int n = sz(b);
ll val = 0; ll w = 1;
rep(i, n) {
val += w * d[i];
w *= b[i];
}
return val;
}
void TLE4() {
int n, m, k;
cin >> n >> m >> k;
auto g = read_Graph(n, m);
auto a = adjacency_matrix(g);
vi B{ n, n };
rep(i, n) B.push_back(k + 1);
// (from, to, seen) → cnt
vm dp(19131876, -1); vb seen(19131876);
rep(v, n) {
vi vvc(2 + n);
vvc[0] = vvc[1] = v;
vvc[2 + v] = 1;
int id = from_mixed_radix_form(B, vvc);
dp[id] = 1;
seen[id] = true;
}
function<mint(int)> rf = [&](int id) {
if (seen[id]) return dp[id];
auto stc = mixed_radix_form(B, id);
int t = stc[1];
if (stc[2 + t] == 0) return mint(0);
mint res = 0;
stc[2 + t]--;
rep(v, n) {
if (a[v][t] == 0) continue;
auto svc(stc);
svc[1] = v;
int nid = from_mixed_radix_form(B, svc);
res += rf(nid);
}
stc[2 + t]++;
dp[id] = res;
seen[id] = true;
return res;
};
vi c_all(n, k);
mint res = 0;
rep(s, n) rep(t, n) {
vi stc(2 + n);
stc[0] = s;
stc[1] = t;
repi(i, 2, 2 + n - 1) stc[i] = k;
int id = from_mixed_radix_form(B, stc);
res += rf(id);
}
// dumpel(dp);
cout << res << endl;
}
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int n, m, k;
cin >> n >> m >> k;
auto g = read_Graph(n, m);
auto a = adjacency_matrix(g);
vi B{ n };
rep(i, n) B.push_back(k + 1);
// (to, seen) → cnt  
vm dp(3188646, -1); vb seen(3188646);
rep(v, n) {
vi vvc(1 + n);
vvc[0] = v;
vvc[1 + v] = 1;
int id = from_mixed_radix_form(B, vvc);
dp[id] = 1;
seen[id] = true;
}
function<mint(int)> rf = [&](int id) {
if (seen[id]) return dp[id];
auto stc = mixed_radix_form(B, id);
int t = stc[0];
if (stc[1 + t] == 0) return mint(0);
mint res = 0;
stc[1 + t]--;
rep(v, n) {
if (a[v][t] == 0) continue;
auto svc(stc);
svc[0] = v;
int nid = from_mixed_radix_form(B, svc);
res += rf(nid);
}
stc[1 + t]++;
dp[id] = res;
seen[id] = true;
return res;
};
vi c_all(n, k);
mint res = 0;
rep(t, n) {
vi stc(1 + n);
stc[0] = t;
repi(i, 1, 1 + n - 1) stc[i] = k;
int id = from_mixed_radix_form(B, stc);
res += rf(id);
}
// dumpel(dp);
cout << res << endl;
}
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