結果
問題 | No.2733 Just K-times TSP |
ユーザー |
|
提出日時 | 2024-04-24 23:20:59 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 4,783 bytes |
コンパイル時間 | 2,094 ms |
コンパイル使用メモリ | 189,688 KB |
実行使用メモリ | 154,704 KB |
最終ジャッジ日時 | 2024-11-07 08:37:16 |
合計ジャッジ時間 | 14,999 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 30 TLE * 2 |
ソースコード
#include<bits/stdc++.h>using namespace std;using ll = long long;using pll = pair<ll, ll>;#define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i)#define rep(i, n) drep(i, 0, n - 1)#define all(a) (a).begin(), (a).end()#define pb push_back#define fi first#define se secondmt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());const ll MOD1000000007 = 1000000007;const ll MOD998244353 = 998244353;const ll MOD[3] = {999727999, 1070777777, 1000000007};const ll LINF = 1LL << 60LL;const int IINF = (1 << 30) - 1;template<typename T>struct edge{int from, to;T cost;int id;edge(){}edge(int to, T cost=1) : from(-1), to(to), cost(cost){}edge(int to, T cost, int id) : from(-1), to(to), cost(cost), id(id){}edge(int from, int to, T cost, int id) : from(from), to(to), cost(cost), id(id){}};template<typename T>struct redge{int from, to;T cap, cost;int rev;redge(int to, T cap, T cost=(T)(1)) : from(-1), to(to), cap(cap), cost(cost){}redge(int to, T cap, T cost, int rev) : from(-1), to(to), cap(cap), cost(cost), rev(rev){}};template<typename T> using Edges = vector<edge<T>>;template<typename T> using weighted_graph = vector<Edges<T>>;template<typename T> using tree = vector<Edges<T>>;using unweighted_graph = vector<vector<int>>;template<typename T> using residual_graph = vector<vector<redge<T>>>;template<long long mod>class modint{long long x;public:modint(long long x=0) : x((x%mod+mod)%mod) {}modint operator-() const {return modint(-x);}bool operator==(const modint& a){if(x == a) return true;else return false;}bool operator==(long long a){if(x == a) return true;else return false;}bool operator!=(const modint& a){if(x != a) return true;else return false;}bool operator!=(long long a){if(x != a) return true;else return false;}modint& operator+=(const modint& a) {if ((x += a.x) >= mod) x -= mod;return *this;}modint& operator-=(const modint& a) {if ((x += mod-a.x) >= mod) x -= mod;return *this;}modint& operator*=(const modint& a) {(x *= a.x) %= mod;return *this;}modint operator+(const modint& a) const {modint res(*this);return res+=a;}modint operator-(const modint& a) const {modint res(*this);return res-=a;}modint operator*(const modint& a) const {modint res(*this);return res*=a;}modint pow(long long t) const {if (!t) return 1;modint a = pow(t>>1);a *= a;if (t&1) a *= *this;return a;}// for prime modmodint inv() const {return pow(mod-2);}modint& operator/=(const modint& a) {return (*this) *= a.inv();}modint operator/(const modint& a) const {modint res(*this);return res/=a;}friend std::istream& operator>>(std::istream& is, modint& m) noexcept {is >> m.x;m.x %= mod;if (m.x < 0) m.x += mod;return is;}friend ostream& operator<<(ostream& os, const modint& m){os << m.x;return os;}};using mint = modint<MOD998244353>;int vec_to_int(vector<int> &vec){int v = 0;for(int x : vec) v = 10*v + x;return v;}void solve(){int n, m, k; cin >> n >> m >> k;map<int, mint> dp;unweighted_graph G(n);for(int i=0; i<m; i++){int u, v; cin >> u >> v;u--; v--;G[u].pb(v);G[v].pb(u);}vector<bool> check(1e8, false);vector<int> idx(n, 0);queue<vector<int>> Q;for(int v=0; v<n; v++){idx.pb(v);idx[v] = 1;int tmp = vec_to_int(idx);dp[tmp] = 1;Q.push(idx);check[tmp]=true;idx[v] = 0;idx.pop_back();}while(!Q.empty()){vector<int> idx = Q.front();Q.pop();mint value = dp[vec_to_int(idx)];int v = idx.back();for(int to : G[v]) if(idx[to]<k){idx.back() = to;idx[to]++;int tmp = vec_to_int(idx);dp[tmp] += value;if(!check[tmp]) Q.push(idx);check[tmp] = true;idx.back() = v;idx[to]--;}}mint ans = 0;for(int v=0; v<n; v++) idx[v] = k;for(int v=0; v<n; v++){idx.pb(v);ans += dp[vec_to_int(idx)];idx.pop_back();}cout << ans << '\n';}int main(){cin.tie(nullptr);ios::sync_with_stdio(false);int T=1;//cin >> T;while(T--) solve();}