結果
| 問題 | No.1647 Travel in Mitaru city 2 |
| ユーザー |
 n_vip
|
| 提出日時 | 2021-08-13 21:51:43 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 66 ms / 2,500 ms |
| コード長 | 6,553 bytes |
| コンパイル時間 | 1,789 ms |
| コンパイル使用メモリ | 140,836 KB |
| 最終ジャッジ日時 | 2025-01-23 18:52:22 |
|
ジャッジサーバーID （参考情報） |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 48 |
ソースコード
#include <string>#include <vector>#include<iostream>#include<cstdio>#include<cstdlib>#include<stack>#include<queue>#include<cmath>#include<algorithm>#include<functional>#include<list>#include<deque>#include<bitset>#include<set>#include<map>#include<unordered_map>#include<unordered_set>#include<cstring>#include<sstream>#include<complex>#include<iomanip>#include<numeric>#include<cassert>#include<random>#define X first#define Y second#define pb push_back#define rep(X,Y) for (int (X) = 0;(X) < (int)(Y);++(X))#define reps(X,S,Y) for (int (X) = (int)(S);(X) < (int)(Y);++(X))#define rrep(X,Y) for (int (X) = (int)(Y)-1;(X) >=0;--(X))#define rreps(X,S,Y) for (int (X) = (int)(Y)-1;(X) >= (int)(S);--(X))#define repe(X,Y) for ((X) = 0;(X) < (Y);++(X))#define peat(X,Y) for (;(X) < (Y);++(X))#define all(X) (X).begin(),(X).end()#define rall(X) (X).rbegin(),(X).rend()#define eb emplace_back#define UNIQUE(X) (X).erase(unique(all(X)),(X).end())#define Endl endl#define NL <<"\n"#define cauto const autousing namespace std;using ll=long long;using pii=pair<int,int>;using pll=pair<ll,ll>;template<class T> using vv=vector<vector<T>>;template<class T> inline bool MX(T &l,const T &r){return l<r?l=r,1:0;}template<class T> inline bool MN(T &l,const T &r){return l>r?l=r,1:0;}//#undef NUIP#ifdef NUIP#include "benri.h"#else#define out(args...)#endifvoid ouT(ll x,int d=3){auto re=to_string(x);if((int)re.size()>d) re=x>0?"oo":"-oo";cout<<string(d-re.size(),' ')<<re<<",";}#ifdef __cpp_init_capturestemplate<typename T>vector<T> table(int n, T v){ return vector<T>(n, v);}template <class... Args> auto table(int n, Args... args){auto val = table(args...); return vector<decltype(val)>(n, move(val));}#endiftemplate<class A,class B> pair<A,B> operator+(const pair<A,B> &p,const pair<A,B> &q){ return {p.X+q.X,p.Y+q.Y};}template<class A,class B,class C,class D> pair<A,B>& operator+=(pair<A,B> &p,const pair<C,D> &q){ p.X+=q.X; p.Y+=q.Y; return p;}template<class A,class B> pair<A,B> operator-(const pair<A,B> &p,const pair<A,B> &q){ return {p.X-q.X,p.Y-q.Y};}template<class A,class B,class C,class D> pair<A,B>& operator-=(pair<A,B> &p,const pair<C,D> &q){ p.X-=q.X; p.Y-=q.Y; return p;}template<class A,class B> istream& operator>>(istream &is, pair<A,B> &p){ is>>p.X>>p.Y; return is;}template<class T=ll> T read(){ T re; cin>>re; return re;}template<class T=ll> T read(const T &dec){ T re; cin>>re; return re-dec;}template<class T=ll> vector<T> readV(const int sz){ vector<T> re(sz); for(auto &x:re) x=read<T>(); return re;}template<class T=ll> vector<T> readV(const int sz, const T &dec){ vector<T> re(sz); for(auto &x:re) x=read<T>(dec); return re;}vv<int> readG(const int &n,const int &m){ vv<int> g(n); rep(_,m){ cauto a=read<int>(1),b=read<int>(1); g[a].pb(b); g[b].pb(a);} return g;}vv<int> readG(const int &n){ return readG(n,n-1);}vv<int> readD(const int &n,const int &m){ vv<int> g(n); rep(_,m){ cauto a=read<int>(1),b=read<int>(1); g[a].pb(b); } return g;}vv<int> readD(const int &n){ return readD(n,n-1);}template<class T> vv<pair<int,T>> readG(const int &n,const int &m){ vv<pair<int,T>> g(n); rep(_,m){ cauto a=read<int>(1),b=read<int>(1); cauto c=read<T>(); g[a].eb(b,c); g[b].eb(a,c);} return g;}template<class T> vv<pair<int,T>> readG(const int &n){ return readG<T>(n,n-1);}template<class T> vv<pair<int,T>> readD(const int &n,const int &m){ vv<pair<int,T>> g(n); rep(_,m){ cauto a=read<int>(1),b=read<int>(1); cauto c=read<T>(); g[a].eb(b,c); } return g;}template<class T> vv<pair<int,T>> readD(const int &n){ return readD<T>(n,n-1);}#ifdef __cpp_init_capturestemplate<typename T> vector<T> readT(int n, T v){ return readV(n,v);}template <class... Args> auto readT(int n, Args... args){ vector re(1,readT(args...));rep(_,n-1) re.eb(readT(args...)); return re;}template<typename T, size_t... Is> void addadd(T& t1, const T& t2, integer_sequence<size_t, Is...>){ cauto l = { (get<Is>(t1) += get<Is>(t2), 0)... }; (void)l;}template <typename...T>tuple<T...>& operator += (tuple<T...>& lhs, const tuple<T...>& rhs){ addadd(lhs, rhs, index_sequence_for<T...>{}); returnlhs;}template <typename...T>tuple<T...> operator +(tuple<T...> lhs, const tuple<T...>& rhs){ return lhs += rhs;}template<typename T, size_t... Is> void subsub(T& t1, const T& t2, integer_sequence<size_t, Is...>){ cauto l = { (get<Is>(t1) -= get<Is>(t2), 0)... }; (void)l;}template <typename...T>tuple<T...>& operator -= (tuple<T...>& lhs, const tuple<T...>& rhs){ subsub(lhs, rhs, index_sequence_for<T...>{}); returnlhs;}template <typename...T>tuple<T...> operator - (tuple<T...> lhs, const tuple<T...>& rhs){ return lhs -= rhs;}template<class Tuple, size_t... Is> void read_tuple_impl(istream &is, Tuple& t, index_sequence<Is...>){((is >> get<Is>(t)), ...);}template<class... Args> auto& operator>>(istream &is, tuple<Args...>& t){ read_tuple_impl(is, t, index_sequence_for<Args...>{}); return is;}#endif#define TT cauto TTT=read();rep(_,TTT)const ll MOD=1e9+7; //998244353;struct UF{vector<int> data;UF(const int &size):data(size,-1){}int unite(int x, int y){x=root(x); y=root(y);if(x==y) return 0;if(-data[y]>-data[x]) swap(x,y);data[x]+=data[y]; data[y]=x;return y+1;}bool findSet(const int &x, const int &y){ return root(x)==root(y);}int root(const int &x){ return data[x]<0?x:data[x]=root(data[x]);}int size(const int &x){ return -data[root(x)];}int size(){ return count_if(all(data),[](const int &x){ return x<0;});}; //unverifiedint operator()(const int &x, const int &y){ return unite(x,y);}int operator()(const pii &xy){ return unite(xy.X,xy.Y);}int operator[](const int &x){ return root(x);}bool operator[](const pii &xy){ return findSet(xy.X,xy.Y);}};int main(){ios_base::sync_with_stdio(false); cin.tie(0);cout<<fixed<<setprecision(0);cauto l=read();cauto r=read();cauto m=read();cauto es=readV<pii>(m,{1,1});UF uf(l+r);vv<pii> g(l+r);rep(i,m){cauto &[a,b]=es[i];if(uf(a,l+b)){g[a].eb(l+b,i);g[l+b].eb(a,i);continue;}vector<int> re;cauto dfs=[&](auto &&dfs,int v,int p)->void{if(v==a){if(es[re[0]].Y==es[re[1]].Y){re.eb(i);}else{re.insert(re.begin(),i);}cout<<re.size() NL;for(cauto &x:re) cout<<x+1<<" ";cout NL;return;}re.eb();for(cauto &[u,e]:g[v])if(p!=u){re.back()=e;dfs(dfs,u,v);}re.pop_back();};dfs(dfs,l+b,-1);return 0;}cout<<-1 NL;return 0;}