結果
| 問題 | No.1190 Points |
| コンテスト | |
| ユーザー |
theory_and_me
|
| 提出日時 | 2020-08-23 01:58:36 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 276 ms / 2,000 ms |
| コード長 | 3,441 bytes |
| 記録 | |
| コンパイル時間 | 2,627 ms |
| コンパイル使用メモリ | 203,436 KB |
| 最終ジャッジ日時 | 2025-01-13 12:10:03 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(ll i=0;i<(ll)n;i++)
#define dump(x) cerr << #x << " = " << (x) << endl;
#define spa << " " <<
#define fi first
#define se second
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
using ld = long double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<long, long>;
using pdd = pair<ld, ld>;
template<typename T> struct V : vector<T> { using vector<T>::vector; };
V() -> V<ll>;
V(size_t) -> V<ll>;
template<typename T> V(size_t, T) -> V<T>;
template<typename T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); }
template<typename... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); }
template<class S, class T> ostream& operator << (ostream& os, const pair<S, T> v){os << "(" << v.first << ", " << v.second << ")"; return os;}
template<typename T> ostream& operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<class T> ostream& operator<<(ostream& os, const vector<vector<T>> &v){ for(auto &e : v){os << e << "\n";} return os;}
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }
void fail() { cout << -1 << '\n'; exit(0); }
inline int popcount(const int x) { return __builtin_popcount(x); }
inline int popcount(const ll x) { return __builtin_popcountll(x); }
template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cerr<<v[i][0];for(ll j=1;j<w;j++)cerr spa v[i][j];cerr<<endl;}};
template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cerr<<v[0];
for(ll i=1;i<n;i++)cerr spa v[i];
cerr<<endl;};
const ll INF = (1ll<<62);
// const ld EPS = 1e-10;
// const ld PI = acos(-1.0);
const ll mod = (int)1e9 + 7;
//const ll mod = 998244353;
using Graph = V<V<ll>>;
vector<int> graph_bfs(Graph &G, ll s){
// sは始点のリスト
const int N = G.size();
vector<int> dist(N, -1);
queue<int> qu;
// initialization
qu.push(s);
dist[s] = 0;
while(!qu.empty()){
int now = qu.front();qu.pop();
for(auto next: G[now]){
if(dist[next] != -1) continue;
dist[next] = dist[now] + 1;
qu.push(next);
}
}
return dist;
}
int main(){
ll N, M, P, S, G;
cin >> N >> M >> P >> S >> G;
S--, G--;
Graph H(2*N);
REP(i, M){
ll u, v;
cin >> u >> v;
u--, v--;
H[u].push_back(v+N);
H[v].push_back(u+N);
H[u+N].push_back(v);
H[v+N].push_back(u);
}
auto distS = graph_bfs(H, S);
auto distG = graph_bfs(H, G);
V<ll> res;
REP(i, N){
bool ok = false;
REP(j, 2){
REP(k, 2){
ll d1 = distS[i+j*N];
ll d2 = distG[i+k*N];
if(d1==-1 or d2==-1) continue;
if(d1+d2<=P and (P-d1-d2)%2==0) ok = true;
}
}
if(ok) res.push_back(i);
}
if((int)res.size() == 0){
cout << -1 << endl;
}else{
cout << res.size() << endl;
for(auto x: res) cout << x+1 << endl;
}
return 0;
}
theory_and_me