結果
問題 | No.2674 k-Walk on Bipartite |
ユーザー | 👑 AngrySadEight |
提出日時 | 2024-03-15 22:53:14 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,382 bytes |
コンパイル時間 | 5,791 ms |
コンパイル使用メモリ | 229,120 KB |
実行使用メモリ | 19,260 KB |
最終ジャッジ日時 | 2024-09-30 02:24:50 |
合計ジャッジ時間 | 8,892 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 100 ms
16,700 KB |
testcase_08 | AC | 142 ms
15,616 KB |
testcase_09 | AC | 86 ms
13,672 KB |
testcase_10 | AC | 171 ms
18,048 KB |
testcase_11 | AC | 91 ms
12,288 KB |
testcase_12 | AC | 167 ms
16,880 KB |
testcase_13 | AC | 82 ms
12,536 KB |
testcase_14 | AC | 24 ms
10,752 KB |
testcase_15 | AC | 197 ms
19,260 KB |
testcase_16 | AC | 130 ms
17,744 KB |
testcase_17 | AC | 133 ms
14,976 KB |
testcase_18 | AC | 47 ms
9,624 KB |
testcase_19 | AC | 106 ms
13,688 KB |
testcase_20 | AC | 90 ms
16,132 KB |
testcase_21 | AC | 147 ms
16,000 KB |
testcase_22 | AC | 177 ms
17,692 KB |
testcase_23 | AC | 2 ms
6,820 KB |
testcase_24 | AC | 2 ms
6,816 KB |
testcase_25 | AC | 2 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,820 KB |
testcase_27 | AC | 2 ms
6,820 KB |
testcase_28 | AC | 2 ms
6,816 KB |
testcase_29 | AC | 2 ms
6,816 KB |
testcase_30 | AC | 2 ms
6,820 KB |
testcase_31 | AC | 2 ms
6,820 KB |
testcase_32 | AC | 2 ms
6,820 KB |
testcase_33 | AC | 2 ms
6,816 KB |
testcase_34 | AC | 2 ms
6,820 KB |
testcase_35 | AC | 2 ms
6,820 KB |
testcase_36 | AC | 2 ms
6,816 KB |
testcase_37 | AC | 2 ms
6,816 KB |
testcase_38 | AC | 2 ms
6,816 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <algorithm> #include <atcoder/all> #include <bitset> #include <cassert> #include <cmath> #include <ctime> #include <functional> #include <iomanip> #include <iostream> #include <map> #include <queue> #include <random> #include <set> #include <stack> #include <string> #include <tuple> #include <unordered_map> #include <unordered_set> #include <utility> #include <vector> using namespace std; using namespace atcoder; typedef long long ll; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--) #define repk(i, k, n) for (int i = k; i < (int)(n); i++) #define all(v) v.begin(), v.end() #define mod1 1000000007 #define mod2 998244353 #define mod3 100000007 #define vi vector<int> #define vs vector<string> #define vc vector<char> #define vl vector<ll> #define vb vector<bool> #define vvi vector<vector<int>> #define vvc vector<vector<char>> #define vvl vector<vector<ll>> #define vvb vector<vector<bool>> #define vvvi vector<vector<vector<int>>> #define vvvl vector<vector<vector<ll>>> #define pii pair<int, int> #define pil pair<int, ll> #define pli pair<ll, int> #define pll pair<ll, ll> #define vpii vector<pair<int, int>> #define vpll vector<pair<ll, ll>> #define vvpii vector<vector<pair<int, int>>> #define vvpll vector<vector<pair<ll, ll>>> // using mint = modint998244353; template <typename T> void debug(T e) { cerr << e << endl; } template <typename T> void debug(vector<T> &v) { rep(i, v.size()) { cerr << v[i] << " "; } cerr << endl; } template <typename T> void debug(vector<vector<T>> &v) { rep(i, v.size()) { rep(j, v[i].size()) { cerr << v[i][j] << " "; } cerr << endl; } } template <typename T> void debug(vector<pair<T, T>> &v) { rep(i, v.size()) { cerr << v[i].first << " " << v[i].second << endl; } } template <typename T> void debug(set<T> &st) { for (auto itr = st.begin(); itr != st.end(); itr++) { cerr << *itr << " "; } cerr << endl; } template <typename T> void debug(multiset<T> &ms) { for (auto itr = ms.begin(); itr != ms.end(); itr++) { cerr << *itr << " "; } cerr << endl; } template <typename T> void debug(map<T, T> &mp) { for (auto itr = mp.begin(); itr != mp.end(); itr++) { cerr << itr->first << " " << itr->second << endl; } } void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << H << " "; debug_out(T...); } int main() { ll N, M; cin >> N >> M; ll s, t, k; cin >> s >> t >> k; s--; t--; vector<ll> A(M); vector<ll> B(M); for (ll i = 0; i < M; i++) { cin >> A[i] >> B[i]; A[i]--; B[i]--; } vector<vector<ll>> graph(N, vector<ll>(0)); for (ll i = 0; i < M; i++) { graph[A[i]].push_back(B[i]); graph[B[i]].push_back(A[i]); } dsu tree(N); for (ll i = 0; i < M; i++) { tree.merge(A[i], B[i]); } if (!tree.same(s, t)) { if (N == 2) { if (k % 2 == 0) { cout << "No" << endl; } else{ cout << "Unknown" << endl; } } else { cout << "Unknown" << endl; } } else { ll INF = 100000000024; vector<ll> dist(N, INF); vector<ll> color(N, -1); queue<ll> que; dist[s] = 0; color[s] = 0; que.push(s); while (que.size()) { ll p = que.front(); que.pop(); for (ll x : graph[p]) { if (dist[x] == INF) { color[x] = 1 - color[p]; dist[x] = dist[p] + 1; que.push(x); } } } if (k % 2 != dist[t] % 2) { cout << "No" << endl; } else { if (s == t) { if (graph[s].size() == 0) { cout << "Unknown" << endl; } else { cout << "Yes" << endl; } } else { if (dist[t] <= k) { cout << "Yes" << endl; } else { cout << "Unknown" << endl; } } } } }