結果
問題 | No.408 五輪ピック |
ユーザー | koyumeishi |
提出日時 | 2016-08-05 23:31:44 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 3,211 ms / 5,000 ms |
コード長 | 8,093 bytes |
コンパイル時間 | 1,305 ms |
コンパイル使用メモリ | 116,912 KB |
実行使用メモリ | 6,912 KB |
最終ジャッジ日時 | 2024-11-07 04:14:18 |
合計ジャッジ時間 | 14,515 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 13 ms
5,248 KB |
testcase_06 | AC | 706 ms
5,632 KB |
testcase_07 | AC | 571 ms
5,504 KB |
testcase_08 | AC | 11 ms
5,248 KB |
testcase_09 | AC | 21 ms
5,248 KB |
testcase_10 | AC | 492 ms
5,248 KB |
testcase_11 | AC | 414 ms
5,248 KB |
testcase_12 | AC | 550 ms
5,376 KB |
testcase_13 | AC | 13 ms
5,248 KB |
testcase_14 | AC | 87 ms
5,248 KB |
testcase_15 | AC | 14 ms
5,248 KB |
testcase_16 | AC | 15 ms
5,248 KB |
testcase_17 | AC | 16 ms
5,248 KB |
testcase_18 | AC | 31 ms
5,248 KB |
testcase_19 | AC | 145 ms
5,504 KB |
testcase_20 | AC | 213 ms
5,248 KB |
testcase_21 | AC | 73 ms
5,248 KB |
testcase_22 | AC | 627 ms
5,504 KB |
testcase_23 | AC | 24 ms
6,912 KB |
testcase_24 | AC | 2,085 ms
6,528 KB |
testcase_25 | AC | 551 ms
5,376 KB |
testcase_26 | AC | 1,629 ms
6,144 KB |
testcase_27 | AC | 3,211 ms
5,376 KB |
testcase_28 | AC | 44 ms
5,248 KB |
testcase_29 | AC | 223 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,248 KB |
testcase_31 | AC | 2 ms
5,248 KB |
ソースコード
/* ### # ############# # ####################### ################################ ######################################### ############################################## # ##################################### # ###### ############################ ###### ########### ################### # ########## ################ ######### ############### #################### # #################### ####### ############## ######################## ######## ######### ######################## ########### ####### ######################## ############## # ####### ######################## ######################## ######################## ######################## ######################## ######################## ######################## ###################### ####################### ################### ################### ############## ############### ########## ########## ###### ###### ## ## # # # # # # # # # # # #### #### #### #### #### # # # # # ## # # # # # # #____# ## # #/ # # ## # # # # # # # #^^^^ # ## ###/# # # # #### #### ###/# #### # # ## */ #include <iostream> #include <vector> #include <cstdio> #include <sstream> #include <map> #include <string> #include <algorithm> #include <queue> #include <cmath> #include <functional> #include <set> #include <ctime> #include <random> #include <chrono> #include <cassert> using namespace std; namespace { using Integer = long long; //__int128; template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;} template<class T> istream& operator , (istream& is, T& val){ return is >> val;} template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;} template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;} template<class H> void print(const H& head){ cout << head; } template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); } template<class ... T> void println(const T& ... values){ print(values...); cout << endl; } template<class H> void eprint(const H& head){ cerr << head; } template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); } template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; } class range{ long long start_, end_, step_; public: struct range_iterator{ long long val, step_; range_iterator(long long v, long long step) : val(v), step_(step) {} long long operator * (){return val;} void operator ++ (){val += step_;} bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;} }; range(long long len) : start_(0), end_(len), step_(1) {} range(long long start, long long end) : start_(start), end_(end), step_(1) {} range(long long start, long long end, long long step) : start_(start), end_(end), step_(step) {} range_iterator begin(){ return range_iterator(start_, step_); } range_iterator end(){ return range_iterator( end_, step_); } }; string operator "" _s (const char* str, size_t size){ return move(string(str)); } constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);} constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);} constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); } inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count()); template<class T> string join(const vector<T>& v, const string& sep){ stringstream ss; for(int i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str(); } string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; } } constexpr long long mod = 9_ten + 7; int main(){ int n,m; //cin >> n,m; scanf("%d%d", &n, &m); vector<vector<int>> G(n); vector<pair<int,int>> e(m); for(int i : range(m)){ int u,v; //cin >> u,v; scanf("%d%d", &u, &v); u--; v--; G[u].push_back(v); G[v].push_back(u); e[i] = {min(u,v), max(u,v)}; } vector<int> dd(n, 1e7); for(int i : range(m)){ if( e[i].first == 0 ) dd[ e[i].second ] = 1; } vector<vector<int>> GG(n); for(int i : range(m)){ if(dd[ e[i].first ] != 1 && dd[ e[i].second ] != 1) continue; GG[e[i].first].push_back(e[i].second); GG[e[i].second].push_back(e[i].first); } for(int i : range(m)){ int u = e[i].first; int v = e[i].second; if(u == 0) continue; vector<int> d_u(n, 1e7); vector<int> d_v(n, 1e7); vector<int> c_u(n, 0); vector<int> c_v(n, 0); int last_v = -1; int last_u = -1; function<void(int, vector<int>&, vector<int>&, int&)> bfs = [&](int pos, vector<int>& d, vector<int>& c, int& last){ d[pos] = 0; c[pos] = 1; queue<int> q; q.push(pos); while(q.size()){ int p = q.front(); q.pop(); if(d[p] >= 2) break; for(int nx : GG[p]){ if(nx == u || nx == v) continue; bool new_v = true; if( (d[p] == 1 && nx == 0) || (d[p] == 0 && nx != 0) ){ if(d[nx] == d[p]+1) new_v = false; d[nx] = d[p] + 1; c[nx] += c[p]; if(nx == 0) last = p; if(nx == 0 && c[nx] >= 2){ q = queue<int>(); break; } if(new_v) q.push( nx ); } } } }; bfs(u, d_u, c_u, last_u); if(c_u[0] == 0) continue; bfs(v, d_v, c_v, last_v); if((c_u[0] >= 2 && c_v[0] >= 1) || (c_u[0] >= 1 && c_v[0] >= 2) || (c_u[0] == 1 && c_v[0] == 1 && last_u != last_v) ){ println("YES"); return 0; } } println("NO"); return 0; }