結果
問題 | No.583 鉄道同好会 |
ユーザー | komori3 |
提出日時 | 2018-02-19 05:58:11 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 52 ms / 2,000 ms |
コード長 | 4,374 bytes |
コンパイル時間 | 1,245 ms |
コンパイル使用メモリ | 167,736 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-06 04:43:57 |
合計ジャッジ時間 | 2,178 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 13 ms
5,376 KB |
testcase_12 | AC | 17 ms
5,376 KB |
testcase_13 | AC | 17 ms
5,376 KB |
testcase_14 | AC | 18 ms
5,376 KB |
testcase_15 | AC | 22 ms
5,376 KB |
testcase_16 | AC | 40 ms
5,376 KB |
testcase_17 | AC | 52 ms
5,376 KB |
testcase_18 | AC | 51 ms
5,376 KB |
ソースコード
#define _CRT_SECURE_NO_WARNINGS #include "bits/stdc++.h" #include <random> //#include "util.k" using namespace std; //呪文 #define DUMPOUT cout #define dump(...) DUMPOUT<<" ";DUMPOUT<<#__VA_ARGS__<<" :["<<__LINE__<<":"<<__FUNCTION__<<"]"<<endl;DUMPOUT<<" ";dump_func(__VA_ARGS__) typedef unsigned uint; typedef long long ll; typedef unsigned long long ull; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef pair<double, double> pdd; typedef pair<string, string> pss; template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { ostr << "{" << m.first << ", " << m.second << "}"; return ostr; } template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { ostr << ", " << *itr; } ostr << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { ostr << ", " << *itr; } ostr << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { ostr << ", " << *itr; } ostr << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const stack<_Ty>& s) { if (s.empty()) { ostr << "{ }"; return ostr; } stack<_Ty> t(s); ostr << "{" << t.top(); t.pop(); while (!t.empty()) { ostr << ", " << t.top(); t.pop(); } ostr << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const list<_Ty>& l) { if (l.empty()) { ostr << "{ }"; return ostr; } ostr << "{" << l.front(); for (auto itr = ++l.begin(); itr != l.end(); ++itr) { ostr << ", " << *itr; } ostr << "}"; return ostr; } template <typename _KTy, typename _Ty> istream& operator >> (istream& istr, pair<_KTy, _Ty>& m) { istr >> m.first >> m.second; return istr; } template <typename _Ty> istream& operator >> (istream& istr, vector<_Ty>& v) { for (size_t i = 0; i < v.size(); i++) istr >> v[i]; return istr; } namespace aux { // print tuple template<typename Ty, unsigned N, unsigned L> struct tp { static void print(ostream& os, const Ty& v) { os << get<N>(v) << ", "; tp<Ty, N + 1, L>::print(os, v); } }; template<typename Ty, unsigned N> struct tp<Ty, N, N> { static void print(ostream& os, const Ty& value) { os << get<N>(value); } }; } template<typename... Tys> ostream& operator<<(ostream& os, const tuple<Tys...>& t) { os << "{"; aux::tp<tuple<Tys...>, 0, sizeof...(Tys)-1>::print(os, t); os << "}"; return os; } template<typename A, size_t N, typename T> inline void Fill(A(&array)[N], const T &val) { std::fill((T*)array, (T*)(array + N), val); } void dump_func() { DUMPOUT << endl; } template <class Head, class... Tail> void dump_func(Head&& head, Tail&&... tail) { DUMPOUT << head; if (sizeof...(Tail) == 0) { DUMPOUT << " "; } else { DUMPOUT << ", "; } dump_func(std::move(tail)...); } #define PI 3.14159265358979323846 #define EPS 1e-11 #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define all(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) #define fake false int main() { //clock_t start, end; //start = clock(); //cin.tie(0); //ios::sync_with_stdio(false); int N, M; cin >> N >> M; vector<vector<int>> G(N); REP(i, M) { int a, b; cin >> a >> b; G[a].push_back(b); G[b].push_back(a); } { int count = 0, stop = 0; for (int i = 0; i < G.size(); i++) if (!G[i].empty()) stop++; vector<bool> used(N, false); queue<int> qu; for (int i = 0; i < G.size(); i++) if (!G[i].empty()) { qu.push(i); break; } while (!qu.empty()) { int x = qu.front(); qu.pop(); if (used[x]) continue; used[x] = true; count++; for (int i = 0; i < G[x].size(); i++) qu.push(G[x][i]); } if (count != stop) { cout << "NO" << endl; return 0; } } int odd_edge = 0; for (int i = 0; i < G.size(); i++) { odd_edge += G[i].size() % 2; } if (odd_edge == 0 || odd_edge == 2) cout << "YES" << endl; else cout << "NO" << endl; //end = clock(); //printf("%d msec.\k", end - start); return 0; }