結果
| 問題 |
No.1190 Points
|
| コンテスト | |
| ユーザー |
Series_205
|
| 提出日時 | 2020-08-22 14:31:43 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 75 ms / 2,000 ms |
| コード長 | 3,984 bytes |
| コンパイル時間 | 3,315 ms |
| コンパイル使用メモリ | 204,836 KB |
| 最終ジャッジ日時 | 2025-01-13 08:44:04 |
|
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>
#define FOR(i, a, n) for(ll i = (ll)a; i < (ll)n; i++)
#define FORR(i, n) for(ll i = (ll)n - 1LL; i >= 0LL; i--)
#define rep(i, n) FOR(i, 0, n)
#define ALL(x) begin(x), end(x)
using namespace std;
using ll = long long;
constexpr ll Mod = 998244353;
constexpr ll mod = 1e9 + 7;
constexpr ll inf = 1LL << 60;
const double PI = acos(-1);
template <typename T1, typename T2> inline bool chmax(T1 &a, T2 b) {
return a < b && (a = b, true);
}
template <typename T1, typename T2> inline bool chmin(T1 &a, T2 b) {
return a > b && (a = b, true);
}
/*-------------------------------------------*/
template <int M> class ModInt {
int x;
public:
constexpr ModInt() : x(0) {}
constexpr ModInt(int64_t y) : x(y >= 0 ? y % M : (M - (-y) % M) % M) {}
constexpr ModInt &operator+=(const ModInt p) {
if((x += p.x) >= M) x -= M;
return *this;
}
constexpr ModInt &operator-=(const ModInt p) {
if((x += M - p.x) >= M) x -= M;
return *this;
}
constexpr ModInt &operator*=(const ModInt p) {
x = (int)(1LL * x * p.x % M);
return *this;
}
constexpr ModInt &operator/=(const ModInt p) {
*this *= p.inverse();
return *this;
}
constexpr ModInt operator-() const { return ModInt(-x); }
constexpr ModInt operator+(const ModInt p) const {
return ModInt(*this) += p;
}
constexpr ModInt operator-(const ModInt p) const {
return ModInt(*this) -= p;
}
constexpr ModInt operator*(const ModInt p) const {
return ModInt(*this) *= p;
}
constexpr ModInt operator/(const ModInt p) const {
return ModInt(*this) /= p;
}
constexpr bool operator==(const ModInt p) const { return x == p.x; }
constexpr bool operator!=(const ModInt p) const { return x != p.x; }
constexpr ModInt inverse() const {
int a = x, b = M, u = 1, v = 0, t = 0;
while(b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
constexpr ModInt pow(int64_t k) const {
ModInt ret(1), mul(x);
while(k > 0) {
if(k & 1) ret *= mul;
mul *= mul;
k >>= 1;
}
return ret;
}
constexpr friend ostream &operator<<(ostream &os, const ModInt &p) {
return os << p.x;
}
constexpr friend istream &operator>>(istream &is, ModInt &a) {
int64_t t = 0;
is >> t;
a = ModInt(t);
return (is);
}
};
using mint = ModInt<Mod>;
int n, m, k, s, g;
int d[100009][2], d2[100009][2];
vector<int> G[100009];
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cin >> n >> m >> k;
cin >> s >> g;
s--;
g--;
rep(i, m) {
int a, b;
cin >> a >> b;
a--;
b--;
G[a].push_back(b);
G[b].push_back(a);
}
memset(d, 63, sizeof(d));
d[s][0] = 0;
queue<pair<int, int>> que;
que.emplace(s, 0);
while(!que.empty()) {
auto [v, t] = que.front();
que.pop();
for(int u : G[v])
if(d[u][!t] > 1e9) {
d[u][!t] = d[v][t] + 1;
que.emplace(u, !t);
}
}
memset(d2, 63, sizeof(d2));
d2[g][0] = 0;
que.emplace(g, 0);
while(!que.empty()) {
auto [v, t] = que.front();
que.pop();
for(int u : G[v])
if(d2[u][!t] > 1e9) {
d2[u][!t] = d2[v][t] + 1;
que.emplace(u, !t);
}
}
vector<int> ans;
rep(i, n) {
bool flag = false;
rep(x, 2) rep(y, 2) if(d[i][x] + d2[i][y] <= k && (x ^ y) == (k & 1))
flag = true;
if(flag) ans.push_back(i);
}
if(ans.empty()) {
cout << -1 << endl;
return 0;
}
sort(ALL(ans));
cout << ans.size() << endl;
rep(i, ans.size()) cout << ans[i] + 1 << "\n";
return 0;
}
Series_205