結果
| 問題 |
No.1401 全自動マクロの作り方
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-02-20 00:09:15 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,967 bytes |
| コンパイル時間 | 3,552 ms |
| コンパイル使用メモリ | 206,340 KB |
| 最終ジャッジ日時 | 2025-01-19 02:06:53 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 WA * 2 |
| other | AC * 1 WA * 6 |
ソースコード
#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>;
const int MOD = 1000000007;
//const int MOD = 998244353;
const int inf = (1<<30)-1;
const ll INF = (1LL<<60)-1;
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;};
struct io_setup{
io_setup(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout << fixed << setprecision(15);
}
} io_setup;
struct Graph{
vector<vector<int>> es;
const int n;
Graph(int n) : n(n){
es.resize(n);
}
void add_edge(int from, int to, bool directed = true){
es[from].pb(to);
if(!directed) es[to].pb(from);
}
};
struct Strongly_Connected_Components{
vector<vector<int>> es, rs;
vector<int> vs, comp;
vector<bool> used;
const int n;
Strongly_Connected_Components(int n) : n(n){
es.resize(n), rs.resize(n);
vs.resize(n), comp.resize(n), used.resize(n);
}
void add_edge(int from, int to, bool directed = true){
es[from].pb(to), rs[to].pb(from);
if(!directed) es[to].pb(from), rs[from].pb(to);
}
void topological_sort(int now){
used[now] = true;
each(e, es[now]) if(!used[e]) topological_sort(e);
vs.pb(now);
}
void track_back(int now, int cnt){
used[now] = true, comp[now] = cnt;
each(e, rs[now]) if(!used[e]) track_back(e, cnt);
}
Graph decompose(){
fill(all(used), false);
rep(i, n) if(!used[i]) topological_sort(i);
fill(all(used), false), reverse(all(vs));
int cnt = 0;
each(e, vs) if(!used[e]) track_back(e, cnt++);
Graph G(cnt);
rep(i, n){
each(e, es[i]){
int u = comp[i], v = comp[e];
if(u != v) G.add_edge(u, v, true);
}
}
return G;
}
int operator [] (int k) const {return comp[k];}
};
int main(){
int N; cin >> N;
vector<int> d(N);
vector<vector<int>> S(N);
int MAX = 2000;
Strongly_Connected_Components scc(MAX);
rep(i, N){
cin >> d[i];
S[i].resize(d[i]);
rep(j, d[i]) cin >> S[i][j];
scc.add_edge(S[i].front(), S[i].back(), true);
}
if(scc.decompose().n < MAX) {cout << "0\n"; return 0;}
vector<int> ans(MAX);
rep(i, MAX) ans[scc[i]] = i;
cout << MAX << '\n';
rep(i, MAX) cout << ans[i] << ' ';
cout << '\n';
}