結果
問題 | No.2464 To DAG |
ユーザー | sgfc |
提出日時 | 2023-09-08 23:04:26 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,056 ms / 2,000 ms |
コード長 | 3,760 bytes |
コンパイル時間 | 6,030 ms |
コンパイル使用メモリ | 332,420 KB |
実行使用メモリ | 427,520 KB |
最終ジャッジ日時 | 2024-06-26 16:23:46 |
合計ジャッジ時間 | 32,099 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 724 ms
427,520 KB |
testcase_03 | AC | 1,056 ms
421,692 KB |
testcase_04 | AC | 962 ms
417,608 KB |
testcase_05 | AC | 910 ms
417,612 KB |
testcase_06 | AC | 856 ms
417,724 KB |
testcase_07 | AC | 655 ms
229,564 KB |
testcase_08 | AC | 628 ms
176,176 KB |
testcase_09 | AC | 498 ms
124,560 KB |
testcase_10 | AC | 455 ms
102,272 KB |
testcase_11 | AC | 342 ms
87,020 KB |
testcase_12 | AC | 268 ms
73,300 KB |
testcase_13 | AC | 309 ms
65,484 KB |
testcase_14 | AC | 649 ms
269,552 KB |
testcase_15 | AC | 779 ms
324,292 KB |
testcase_16 | AC | 444 ms
180,052 KB |
testcase_17 | AC | 62 ms
31,360 KB |
testcase_18 | AC | 275 ms
115,172 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 110 ms
14,464 KB |
testcase_23 | AC | 116 ms
15,104 KB |
testcase_24 | AC | 105 ms
14,848 KB |
testcase_25 | AC | 108 ms
14,976 KB |
testcase_26 | AC | 193 ms
86,368 KB |
testcase_27 | AC | 1,028 ms
421,780 KB |
testcase_28 | AC | 1,042 ms
421,784 KB |
testcase_29 | AC | 1,017 ms
421,780 KB |
testcase_30 | AC | 688 ms
117,680 KB |
testcase_31 | AC | 563 ms
61,504 KB |
testcase_32 | AC | 521 ms
41,792 KB |
testcase_33 | AC | 742 ms
337,824 KB |
testcase_34 | AC | 373 ms
174,544 KB |
testcase_35 | AC | 149 ms
14,928 KB |
testcase_36 | AC | 141 ms
13,952 KB |
testcase_37 | AC | 58 ms
12,896 KB |
testcase_38 | AC | 55 ms
13,056 KB |
testcase_39 | AC | 374 ms
408,832 KB |
testcase_40 | AC | 354 ms
408,704 KB |
ソースコード
#include "bits/stdc++.h" #include <unordered_map> #include <unordered_set> #include <stdio.h> #include <math.h> #include <cassert> #include "atcoder/all" #include <float.h> //#include <boost/multiprecision/cpp_int.hpp> //using namespace boost::multiprecision; // std::fixed << std::setprecision(10) << using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using mint = modint998244353; using mint2 = modint1000000007; const double eps = 1e-9; #define REP(i, n) for (ll i = 0; i < ll(n); ++i) #define REPI(i, init, n) for (ll i = init; i < ll(n); ++i) #define REPD(i, init) for (ll i = init; i >=0; --i) #define REPDI(i, init, n) for (ll i = init; i >=n; --i) #define REPE(i, c) for (const auto& i : c) #define TCASE ll t; cin >> t; REP(i, t) using vl = vector<ll>; #define VL(a, n) vector<ll> a; a.assign(n, 0); #define VLI(a, n) vector<ll> a; a.assign(n, 0); for(auto& x : a) cin >> x; #define VSI(a, n) vector<string> a; a.assign(n, ""); for(auto& x : a) cin >> x; using vvl = vector<vector<ll>>; #define VVLI(a, n, m, init) vector<vector<ll>> a(n); for(auto& x : a) x.assign(m, init); using pl = pair<ll, ll>; struct uv { ll u; ll v; ll c; }; #define VUVI(a, n) vector<uv> a; a.assign(n, {0, 0, 1}); for(auto& x : a) {cin >> x.u >> x.v; x.u--; x.v--;} #define VUVCI(a, n) vector<uv> a; a.assign(n, {0, 0, 0}); for(auto& x : a) {cin >> x.u >> x.v >> x.c; x.u--; x.v--;} vvl to_edge(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) ret[x.u].push_back(x.v); return ret; } vvl to_edge_d(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) { ret[x.u].push_back(x.v); ret[x.v].push_back(x.u); } return ret; } template <class T = long long> using pql = priority_queue<T>; template <class T = long long> using pqg = priority_queue<T, vector<T>, greater<T>>; using vm = vector<mint>; using vvm = vector<vm>; const char* YES = "Yes"; const char* NO = "No"; void yn(bool f) { std::cout << (f ? YES : NO) << endl; }; template<class T> void ov(const T& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << *it; } }; template<> void ov(const vm& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << it->val(); } }; const ll llhuge = 1LL << 60; //十分でかいが多少足しても溢れない数値 template<class T, class U> bool chmin(T& a, const U& b) { ll olda = a; a = min(a, b); return olda != a; } template<class T, class U> bool chmax(T& a, const U& b) { ll olda = a; a = max(a, b); return olda != a; } template<class T> void mysort(T& v) { std::sort(begin(v), end(v)); }; template<class T, class U> void mysort(T& v, U pr) { std::sort(begin(v), end(v), pr); }; template<class T> void myrev(T& v) { std::reverse(begin(v), end(v)); }; vl edge; vector<deque<ll>> nodes; vl ncheck; vl edgestatus; ll dfs(ll n) { if (ncheck[n]) return n; ncheck[n] = 1; while (!nodes[n].empty()) { ll nei = nodes[n].back(); nodes[n].pop_back(); ll nxt = edge[nei]; ll lp = dfs(nxt); if (lp >= 0) { edgestatus[nei] = -1; if (lp != n) { ncheck[n] = 0; return lp; } } } ncheck[n] = 0; return -1; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); ll n, m; cin >> n >> m; edge.assign(m, 0); nodes.assign(n, {}); REP(i, m) { ll u, v; cin >> u >> v; u--; v--; edge[i] = v; nodes[u].push_back(i); } auto node2 = nodes; edgestatus.assign(m, 0); ncheck.assign(n, 0); REP(i, n) { dfs(i); } vector<pl> ans; REP(i, n) { REPE(e, node2[i]) { if (edgestatus[e] == -1) continue; ans.push_back({ i + 1, edge[e] + 1 }); } } cout << n << " " << ans.size() << endl; REPE(a, ans) { cout << a.first << " " << a.second << endl; } }