結果
問題 | No.2674 k-Walk on Bipartite |
ユーザー | Misuki |
提出日時 | 2024-03-15 22:28:31 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 73 ms / 2,000 ms |
コード長 | 3,944 bytes |
コンパイル時間 | 2,213 ms |
コンパイル使用メモリ | 207,532 KB |
実行使用メモリ | 15,828 KB |
最終ジャッジ日時 | 2024-09-30 01:53:12 |
合計ジャッジ時間 | 4,181 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 1 ms
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,820 KB |
testcase_03 | AC | 1 ms
6,816 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 1 ms
6,820 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 43 ms
12,916 KB |
testcase_08 | AC | 52 ms
11,888 KB |
testcase_09 | AC | 34 ms
12,916 KB |
testcase_10 | AC | 63 ms
13,776 KB |
testcase_11 | AC | 40 ms
11,008 KB |
testcase_12 | AC | 63 ms
12,672 KB |
testcase_13 | AC | 31 ms
11,700 KB |
testcase_14 | AC | 10 ms
8,704 KB |
testcase_15 | AC | 71 ms
14,656 KB |
testcase_16 | AC | 46 ms
13,676 KB |
testcase_17 | AC | 48 ms
11,520 KB |
testcase_18 | AC | 20 ms
9,216 KB |
testcase_19 | AC | 39 ms
12,416 KB |
testcase_20 | AC | 34 ms
12,528 KB |
testcase_21 | AC | 53 ms
12,252 KB |
testcase_22 | AC | 73 ms
15,828 KB |
testcase_23 | AC | 2 ms
6,820 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 1 ms
6,820 KB |
testcase_26 | AC | 1 ms
6,816 KB |
testcase_27 | AC | 1 ms
6,816 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
6,816 KB |
testcase_32 | AC | 1 ms
6,816 KB |
testcase_33 | AC | 1 ms
6,816 KB |
testcase_34 | AC | 2 ms
6,816 KB |
testcase_35 | AC | 1 ms
6,820 KB |
testcase_36 | AC | 1 ms
6,816 KB |
testcase_37 | AC | 1 ms
6,820 KB |
testcase_38 | AC | 2 ms
6,820 KB |
ソースコード
#pragma GCC optimize("O2") #include <algorithm> #include <array> #include <bitset> #include <cassert> #include <cctype> #include <cfenv> #include <cfloat> #include <chrono> #include <cinttypes> #include <climits> #include <cmath> #include <complex> #include <cstdarg> #include <cstddef> #include <cstdint> #include <cstdio> #include <cstdlib> #include <cstring> #include <deque> #include <fstream> #include <functional> #include <initializer_list> #include <iomanip> #include <ios> #include <iostream> #include <istream> #include <iterator> #include <limits> #include <list> #include <map> #include <memory> #include <new> #include <numeric> #include <ostream> #include <queue> #include <random> #include <set> #include <sstream> #include <stack> #include <streambuf> #include <string> #include <tuple> #include <type_traits> #include <variant> #if __cplusplus >= 202002L #include <bit> #include <compare> #include <concepts> #include <numbers> #include <ranges> #include <span> #else #define ssize(v) (int)(v).size() #define popcount(x) __builtin_popcountll(x) constexpr int bit_width(const unsigned int x) { return x == 0 ? 0 : ((sizeof(unsigned int) * CHAR_BIT) - __builtin_clz(x)); } constexpr int bit_width(const unsigned long long x) { return x == 0 ? 0 : ((sizeof(unsigned long long) * CHAR_BIT) - __builtin_clzll(x)); } constexpr int countr_zero(const unsigned int x) { return x == 0 ? sizeof(unsigned int) * CHAR_BIT : __builtin_ctz(x); } constexpr int countr_zero(const unsigned long long x) { return x == 0 ? sizeof(unsigned long long) * CHAR_BIT : __builtin_ctzll(x); } constexpr unsigned int bit_ceil(const unsigned int x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1u << bit_width(x))); } constexpr unsigned long long bit_ceil(const unsigned long long x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1ull << bit_width(x))); } #endif #define int ll #define INT128_MAX (__int128)(((unsigned __int128) 1 << ((sizeof(__int128) * __CHAR_BIT__) - 1)) - 1) #define INT128_MIN (-INT128_MAX - 1) #define clock chrono::steady_clock::now().time_since_epoch().count() #ifdef DEBUG #define dbg(x) cout << (#x) << " = " << x << '\n' #else #define dbg(x) #endif using namespace std; using ll = long long; using ull = unsigned long long; using ldb = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; //#define double ldb template<class T> ostream& operator<<(ostream& os, const pair<T, T> pr) { return os << pr.first << ' ' << pr.second; } template<class T, size_t N> ostream& operator<<(ostream& os, const array<T, N> &arr) { for(const T &X : arr) os << X << ' '; return os; } template<class T> ostream& operator<<(ostream& os, const vector<T> &vec) { for(const T &X : vec) os << X << ' '; return os; } template<class T> ostream& operator<<(ostream& os, const set<T> &s) { for(const T &x : s) os << x << ' '; return os; } signed main() { ios::sync_with_stdio(false), cin.tie(NULL); int n, m, s, t, k; cin >> n >> m >> s >> t >> k; s--, t--; vector<vector<int>> g(n); for(int i = 0; i < m; i++) { int a, b; cin >> a >> b; a--, b--; g[a].emplace_back(b); g[b].emplace_back(a); } vector<int> dis(n, INT_MAX); queue<int> q; q.push(s); int vis = 0; dis[s] = 0; while(!q.empty()) { vis++; int v = q.front(); q.pop(); for(int x : g[v]) { if (dis[x] == INT_MAX) { dis[x] = dis[v] + 1; q.push(x); } } } if (n == 1) { cout << "No\n"; return 0; } if (s == t) { if (k % 2 == 1) cout << "No\n"; else if (vis == 1) cout << "Unknown\n"; else cout << "Yes\n"; return 0; } if (dis[t] == INT_MAX) { if (n == 2 and k % 2 == 0) cout << "No\n"; else cout << "Unknown\n"; } else { if (dis[t] % 2 == k % 2 and dis[t] <= k) cout << "Yes\n"; else if (dis[t] % 2 != k % 2) cout << "No\n"; else cout << "Unknown\n"; } return 0; }