結果
| 問題 |
No.1370 置換門松列
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-01-29 22:28:31 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 71 ms / 2,000 ms |
| コード長 | 3,122 bytes |
| コンパイル時間 | 2,440 ms |
| コンパイル使用メモリ | 206,248 KB |
| 最終ジャッジ日時 | 2025-01-18 09:27:57 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 25 |
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 = false){
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, M; cin >> N >> M;
vector<int> a(N);
rep(i, N) {cin >> a[i]; a[i]--;}
Strongly_Connected_Components G(M);
rep2(i, 1, N-2){
if(a[i-1] == a[i] || a[i] == a[i+1] || a[i-1] == a[i+1]){
cout << "No\n";
return 0;
}
if(i&1){
G.add_edge(a[i-1], a[i], true), G.add_edge(a[i+1], a[i], true);
}
else{
G.add_edge(a[i], a[i-1], true), G.add_edge(a[i], a[i+1], true);
}
}
int m = G.decompose().n;
if(m != M){
cout << "No\n";
return 0;
}
cout << "Yes\n";
rep(i, M) cout << G[i]+1 << ' ';
cout << '\n';
}