結果
問題 | No.1023 Cyclic Tour |
ユーザー | maroon_kuri |
提出日時 | 2020-04-10 22:32:30 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 88 ms / 2,000 ms |
コード長 | 5,195 bytes |
コンパイル時間 | 2,047 ms |
コンパイル使用メモリ | 185,664 KB |
実行使用メモリ | 19,980 KB |
最終ジャッジ日時 | 2024-09-15 21:01:21 |
合計ジャッジ時間 | 7,317 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 28 ms
5,376 KB |
testcase_05 | AC | 28 ms
5,376 KB |
testcase_06 | AC | 30 ms
5,376 KB |
testcase_07 | AC | 29 ms
5,376 KB |
testcase_08 | AC | 37 ms
9,892 KB |
testcase_09 | AC | 49 ms
15,724 KB |
testcase_10 | AC | 47 ms
15,744 KB |
testcase_11 | AC | 51 ms
16,452 KB |
testcase_12 | AC | 52 ms
17,764 KB |
testcase_13 | AC | 48 ms
16,904 KB |
testcase_14 | AC | 48 ms
16,760 KB |
testcase_15 | AC | 49 ms
17,296 KB |
testcase_16 | AC | 83 ms
19,456 KB |
testcase_17 | AC | 80 ms
19,592 KB |
testcase_18 | AC | 80 ms
18,932 KB |
testcase_19 | AC | 78 ms
18,688 KB |
testcase_20 | AC | 63 ms
15,804 KB |
testcase_21 | AC | 64 ms
16,024 KB |
testcase_22 | AC | 74 ms
17,132 KB |
testcase_23 | AC | 78 ms
17,744 KB |
testcase_24 | AC | 87 ms
19,980 KB |
testcase_25 | AC | 65 ms
15,952 KB |
testcase_26 | AC | 63 ms
16,044 KB |
testcase_27 | AC | 63 ms
15,344 KB |
testcase_28 | AC | 86 ms
19,144 KB |
testcase_29 | AC | 88 ms
19,916 KB |
testcase_30 | AC | 87 ms
19,464 KB |
testcase_31 | AC | 81 ms
18,560 KB |
testcase_32 | AC | 80 ms
18,560 KB |
testcase_33 | AC | 84 ms
19,080 KB |
testcase_34 | AC | 22 ms
5,868 KB |
testcase_35 | AC | 48 ms
6,872 KB |
testcase_36 | AC | 68 ms
16,464 KB |
testcase_37 | AC | 75 ms
18,000 KB |
testcase_38 | AC | 80 ms
19,148 KB |
testcase_39 | AC | 78 ms
17,592 KB |
testcase_40 | AC | 80 ms
17,848 KB |
testcase_41 | AC | 78 ms
17,848 KB |
testcase_42 | AC | 57 ms
9,432 KB |
testcase_43 | AC | 57 ms
11,028 KB |
testcase_44 | AC | 35 ms
11,888 KB |
testcase_45 | AC | 60 ms
19,720 KB |
testcase_46 | AC | 50 ms
17,928 KB |
testcase_47 | AC | 33 ms
12,192 KB |
testcase_48 | AC | 64 ms
16,384 KB |
testcase_49 | AC | 66 ms
16,136 KB |
testcase_50 | AC | 63 ms
16,008 KB |
testcase_51 | AC | 55 ms
8,968 KB |
testcase_52 | AC | 58 ms
10,508 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll=long long; #define int ll #define rng(i,a,b) for(int i=int(a);i<int(b);i++) #define rep(i,b) rng(i,0,b) #define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--) #define per(i,b) gnr(i,0,b) #define pb push_back #define eb emplace_back #define a first #define b second #define bg begin() #define ed end() #define all(x) x.bg,x.ed #define si(x) int(x.size()) #ifdef LOCAL #define dmp(x) cerr<<__LINE__<<" "<<#x<<" "<<x<<endl #else #define dmp(x) void(0) #endif template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;} template<class t,class u> void chmin(t&a,u b){if(b<a)a=b;} template<class t> using vc=vector<t>; template<class t> using vvc=vc<vc<t>>; using pi=pair<int,int>; using vi=vc<int>; template<class t,class u> ostream& operator<<(ostream& os,const pair<t,u>& p){ return os<<"{"<<p.a<<","<<p.b<<"}"; } template<class t> ostream& operator<<(ostream& os,const vc<t>& v){ os<<"{"; for(auto e:v)os<<e<<","; return os<<"}"; } #define mp make_pair #define mt make_tuple #define one(x) memset(x,-1,sizeof(x)) #define zero(x) memset(x,0,sizeof(x)) #ifdef LOCAL void dmpr(ostream&os){os<<endl;} template<class T,class... Args> void dmpr(ostream&os,const T&t,const Args&... args){ os<<t<<" "; dmpr(os,args...); } #define dmp2(...) dmpr(cerr,__LINE__,##__VA_ARGS__) #else #define dmp2(...) void(0) #endif using uint=unsigned; using ull=unsigned long long; template<class t,size_t n> ostream& operator<<(ostream&os,const array<t,n>&a){ return os<<vc<t>(all(a)); } template<int i,class T> void print_tuple(ostream&,const T&){ } template<int i,class T,class H,class ...Args> void print_tuple(ostream&os,const T&t){ if(i)os<<","; os<<get<i>(t); print_tuple<i+1,T,Args...>(os,t); } template<class ...Args> ostream& operator<<(ostream&os,const tuple<Args...>&t){ os<<"{"; print_tuple<0,tuple<Args...>,Args...>(os,t); return os<<"}"; } template<class t> void print(t x,int suc=1){ cout<<x; if(suc==1) cout<<"\n"; if(suc==2) cout<<" "; } ll read(){ ll i; cin>>i; return i; } vi readvi(int n,int off=0){ vi v(n); rep(i,n)v[i]=read()+off; return v; } template<class T> void print(const vector<T>&v,int suc=1){ rep(i,v.size()) print(v[i],i==int(v.size())-1?suc:2); } string readString(){ string s; cin>>s; return s; } template<class T> T sq(const T& t){ return t*t; } //#define CAPITAL void yes(bool ex=true){ #ifdef CAPITAL cout<<"YES"<<"\n"; #else cout<<"Yes"<<"\n"; #endif if(ex)exit(0); } void no(bool ex=true){ #ifdef CAPITAL cout<<"NO"<<"\n"; #else cout<<"No"<<"\n"; #endif if(ex)exit(0); } void possible(bool ex=true){ #ifdef CAPITAL cout<<"POSSIBLE"<<"\n"; #else cout<<"Possible"<<"\n"; #endif if(ex)exit(0); } void impossible(bool ex=true){ #ifdef CAPITAL cout<<"IMPOSSIBLE"<<"\n"; #else cout<<"Impossible"<<"\n"; #endif if(ex)exit(0); } constexpr ll ten(int n){ return n==0?1:ten(n-1)*10; } const ll infLL=LLONG_MAX/3; #ifdef int const int inf=infLL; #else const int inf=INT_MAX/2-100; #endif int topbit(signed t){ return t==0?-1:31-__builtin_clz(t); } int topbit(ll t){ return t==0?-1:63-__builtin_clzll(t); } int botbit(signed a){ return a==0?32:__builtin_ctz(a); } int botbit(ll a){ return a==0?64:__builtin_ctzll(a); } int popcount(signed t){ return __builtin_popcount(t); } int popcount(ll t){ return __builtin_popcountll(t); } bool ispow2(int i){ return i&&(i&-i)==i; } ll mask(int i){ return (ll(1)<<i)-1; } bool inc(int a,int b,int c){ return a<=b&&b<=c; } template<class t> void mkuni(vc<t>&v){ sort(all(v)); v.erase(unique(all(v)),v.ed); } ll rand_int(ll l, ll r) { //[l, r] #ifdef LOCAL static mt19937_64 gen; #else static mt19937_64 gen(chrono::steady_clock::now().time_since_epoch().count()); #endif return uniform_int_distribution<ll>(l, r)(gen); } template<class t> void myshuffle(vc<t>&a){ rep(i,si(a))swap(a[i],a[rand_int(0,i)]); } template<class t> int lwb(const vc<t>&v,const t&a){ return lower_bound(all(v),a)-v.bg; } //VERIFY: yosupo //KUPC2017J //AOJDSL1A //without rank struct unionfind{ vi p,s; int c; unionfind(int n):p(n,-1),s(n,1),c(n){} int find(int a){ return p[a]==-1?a:(p[a]=find(p[a])); } //set b to a child of a bool unite(int a,int b){ a=find(a); b=find(b); if(a==b)return false; p[b]=a; s[a]+=s[b]; c--; return true; } bool same(int a,int b){ return find(a)==find(b); } int sz(int a){ return s[find(a)]; } }; //AOJGRL4B template<class t> vi toposort(vvc<t> g){ int n=g.size(); vi a(n); rep(i,n)for(auto e:g[i]) a[e]++; queue<int> q; rep(i,n)if(a[i]==0) q.push(i); vi res; rep(i,n){ if(q.empty())return {}; int v=q.front();q.pop(); res.pb(v); for(auto e:g[v]) if(--a[e]==0) q.push(e); } return res; } signed main(){ cin.tie(0); ios::sync_with_stdio(0); cout<<fixed<<setprecision(20); int n,m;cin>>n>>m; vc<pi> es; unionfind uf(n); rep(_,m){ int a,b,c;cin>>a>>b>>c; a--;b--; if(c==1){ if(!uf.unite(a,b)) yes(); }else{ es.eb(a,b); } } vvc<int> g(n); for(auto e:es){ int a,b;tie(a,b)=e; a=uf.find(a),b=uf.find(b); if(a==b)yes(); g[a].pb(b); } auto ans=toposort(g); if(si(ans))no(); else yes(); }