結果
| 問題 | No.1190 Points |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-09-01 20:41:48 |
| 言語 | C++17(gcc12) (gcc 12.4.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 148 ms / 2,000 ms |
| コード長 | 4,689 bytes |
| 記録 | |
| コンパイル時間 | 12,493 ms |
| コンパイル使用メモリ | 284,232 KB |
| 最終ジャッジ日時 | 2025-01-14 03:12:30 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
ソースコード
#pragma GCC target("avx2")
#pragma GCC optimize("03")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std; typedef long double ld; typedef long long ll;
typedef unsigned long long ull;
#define endl "\n"
#define FOR(i,a,b) for(int i=(a);i<=(b);i++)
#define rep(i,n) for(int i=0;i<(n);i++)
#define PII pair<int, int>
#define PLL pair<ll, ll>
#define ALL(x) (x).begin(), (x).end()
int dx[] = {1, 0, -1, 0}; int dy[] = {0, 1, 0, -1};
constexpr int INF=1<<30;
constexpr ll LINF=1LL<<60;
constexpr ll mod=1e9+7;
template<class T>vector<T> vec(int len, T elem) { return vector<T>(len, elem); } // auto dp = vec(52, vec(103, vec(103, INF)));
template<class T>inline bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>inline bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
template<class T>inline int popcount(T a) {return __builtin_popcount(a);}
template<class T>inline T emod(T a, T p) { return (a%p + p) % p;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (auto &v : vec) is >> v; return is; }
template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {os << '\n'; for (auto v : vec) os << v << ' '; os << '\n'; return os;}
template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; }
template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; }
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa) { os << '(' << pa.first << ',' << pa.second << ')'; return os; }
template <typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
template <typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }
struct MyIO {
MyIO(){
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
}
} IO_OI;
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
cerr << " " << H;
debug_out(T...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
//-------------------
constexpr int MX = 2e5+5;
vector<int> G[MX];
int main() {
int n,m,p; cin >> n >> m >> p;
int s,g; cin >> s >> g;
s--; g--;
rep(i, m) {
int u,v; cin >> u >> v; u--; v--;
G[u].emplace_back(v+n);
G[v].emplace_back(u+n);
G[u+n].emplace_back(v);
G[v+n].emplace_back(u);
}
vector<int> d1(n*2, INF);
vector<int> d2(n*2, INF);
auto bfs = [&](int ss, vector<int>& d)
{
queue<PII> q;
q.push({0, ss});
while(!q.empty()) {
auto pp = q.front(); q.pop();
if(d[pp.second]<INF) continue;
d[pp.second] = pp.first;
for(int np: G[pp.second]) {
if(d[np]==INF) q.push({pp.first+1, np});
}
}
};
bfs(s, d1);
bfs(g, d2);
debug(d1,d2);
vector<int> ans;
rep(i, n) {
bool ok = false;
if(p&1) {
int sm = d1[i] + d2[i+n];
if(d1[i]!=INF and d2[i+n]!=INF and sm <= p) ok = true;
sm = d1[i+n] + d2[i];
if(d1[i+n]!=INF and d2[i]!=INF and sm <= p) ok = true;
} else {
int sm = d1[i] + d2[i];
if(d1[i]!=INF and d2[i]!=INF and sm <= p) ok = true;
sm = d1[i+n] + d2[i+n];
if(d1[i+n]!=INF and d2[i+n]!=INF and sm <= p) ok = true;
}
if(ok) ans.push_back(i);
}
if(ans.size()==0) {
cout << -1 << endl;
} else {
cout << ans.size() << endl;
for(auto x: ans) cout << x+1 << endl;
}
return 0;
}