結果
問題 | No.3107 Listening |
ユーザー | harurun |
提出日時 | 2024-03-07 04:38:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 5,045 bytes |
コンパイル時間 | 11,611 ms |
コンパイル使用メモリ | 504,556 KB |
実行使用メモリ | 108,484 KB |
最終ジャッジ日時 | 2024-09-30 22:00:33 |
合計ジャッジ時間 | 44,922 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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
13,636 KB |
testcase_01 | AC | 3 ms
6,816 KB |
testcase_02 | AC | 4 ms
6,816 KB |
testcase_03 | TLE | - |
testcase_04 | AC | 297 ms
15,548 KB |
testcase_05 | AC | 661 ms
19,632 KB |
testcase_06 | AC | 330 ms
18,880 KB |
testcase_07 | AC | 1,731 ms
42,804 KB |
testcase_08 | AC | 1,052 ms
25,988 KB |
testcase_09 | AC | 1,073 ms
41,004 KB |
testcase_10 | AC | 1,873 ms
72,776 KB |
testcase_11 | TLE | - |
testcase_12 | AC | 1,010 ms
27,508 KB |
testcase_13 | TLE | - |
testcase_14 | AC | 1,260 ms
35,840 KB |
testcase_15 | AC | 615 ms
31,956 KB |
testcase_16 | AC | 364 ms
15,820 KB |
testcase_17 | AC | 753 ms
18,264 KB |
testcase_18 | AC | 143 ms
10,932 KB |
testcase_19 | AC | 1,496 ms
51,500 KB |
testcase_20 | AC | 1,499 ms
61,876 KB |
testcase_21 | TLE | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #include <iostream> #include <vector> #include <algorithm> #include <deque> #include <queue> #include <string> #include <iomanip> #include <set> #include <unordered_set> #include <map> #include <unordered_map> #include <utility> #include <stack> #include <random> #include <complex> #include <functional> #include <stdio.h> #include <stdlib.h> #include <time.h> #include <math.h> #include <assert.h> #if __has_include(<atcoder/all>) #include <atcoder/all> using namespace atcoder; #endif #if __has_include(<boost/multiprecision/cpp_int.hpp>) #include <boost/multiprecision/cpp_int.hpp> using cpp_int=boost::multiprecision::cpp_int; #endif #if __has_include(<boost/multiprecision/cpp_dec_float.hpp>) #include <boost/multiprecision/cpp_dec_float.hpp> template<unsigned size>using cpp_float=boost::multiprecision::number<boost::multiprecision::cpp_dec_float<size>>; template<unsigned size>using cpp_double=boost::multiprecision::number<boost::multiprecision::cpp_dec_float<size,long long>>; #endif using namespace std; using ll=long long; #define read(x) cin>>(x); #define readll(x) ll (x);cin>>(x); #define readS(x) string (x);cin>>(x); #define readvll(x,N) vector<ll> (x)((N));for(int i=0;i<(N);i++){cin>>(x)[i];} #define rep(i,N) for(ll (i)=0;(i)<(N);(i)++) #define rep2d(i,j,H,W) for(ll (i)=0;(i)<(H);(i)++)for(ll (j)=0;(j)<(W);j++) #define is_in(x,y) (0<=(x) && (x)<H && 0<=(y) && (y)<W) #define yn {cout<<"Yes"<<endl;}else{cout<<"No"<<endl;} #define double_out(x) fixed << setprecision(x) template<class T> inline void erase_duplicate(vector<T>& A){sort(A.begin(),A.end());A.erase(unique(A.begin(),A.end()),A.end());} inline ll powll(ll x,ll n){ll r=1;while(n>0){if(n&1){r*=x;};x*=x;n>>=1;};return r;} // https://ei1333.github.io/library/graph/flow/gabow-edmonds.hpp.html // https://qiita.com/Kutimoti_T/items/5b579773e0a24d650bdf /** * @brief Gabow Edmonds(一般グラフの最大マッチング) * @docs docs/gabow-edmonds.md */ struct GabowEdmonds { struct edge { int to, idx; }; vector< vector< edge > > g; vector< pair< int, int > > edges; vector< int > mate, label, first; queue< int > que; GabowEdmonds(int n) : g(n + 1), mate(n + 1), label(n + 1, -1), first(n + 1) {} void add_edge(int u, int v) { ++u, ++v; g[u].push_back(edge{v, (int) (edges.size() + g.size())}); g[v].push_back(edge{u, (int) (edges.size() + g.size())}); edges.emplace_back(u, v); } int find(int x) { if(label[first[x]] < 0) return first[x]; first[x] = find(first[x]); return first[x]; } void rematch(int v, int w) { int t = mate[v]; mate[v] = w; if(mate[t] != v) return; if(label[v] < (int)g.size()) { mate[t] = label[v]; rematch(label[v], t); } else { int x = edges[label[v] - g.size()].first; int y = edges[label[v] - g.size()].second; rematch(x, y); rematch(y, x); } } void assign_label(int x, int y, int num) { int r = find(x); int s = find(y); int join = 0; if(r == s) return; label[r] = -num; label[s] = -num; while(true) { if(s != 0) swap(r, s); r = find(label[mate[r]]); if(label[r] == -num) { join = r; break; } label[r] = -num; } int v = first[x]; while(v != join) { que.push(v); label[v] = num; first[v] = join; v = first[label[mate[v]]]; } v = first[y]; while(v != join) { que.push(v); label[v] = num; first[v] = join; v = first[label[mate[v]]]; } } bool augment_check(int u) { que = queue< int >(); first[u] = 0; label[u] = 0; que.push(u); while(!que.empty()) { int x = que.front(); que.pop(); for(auto e : g[x]) { int y = e.to; if(mate[y] == 0 && y != u) { mate[y] = x; rematch(x, y); return true; } else if(label[y] >= 0) { assign_label(x, y, e.idx); } else if(label[mate[y]] < 0) { label[mate[y]] = x; first[mate[y]] = y; que.push(mate[y]); } } } return false; } vector< pair< int, int > > max_matching() { for(int i = 1; i < (int)g.size(); i++) { if(mate[i] != 0) continue; if(augment_check(i)) label.assign(g.size(), -1); } vector< pair< int, int > > ret; for(int i = 1; i < (int)g.size(); i++) { if(i < mate[i]) ret.emplace_back(i - 1, mate[i] - 1); } return ret; } }; int main(){ ll N,M; cin>>N>>M; GabowEdmonds GE(N); map<pair<ll,ll>,ll> index; for(ll i=0;i<M;i++){ ll u,v; cin>>u>>v; u--;v--; ll vmin=min(u,v),vmax=max(u,v); GE.add_edge(vmin,vmax); index[make_pair(vmin,vmax)]=i+1; } auto res=GE.max_matching(); cout<<res.size()<<endl; for(ll i=0;i<res.size();i++){ auto p=res[i]; ll vmin=min(p.first,p.second); ll vmax=max(p.first,p.second); cout<<index[make_pair(vmin,vmax)]<<endl; } }