結果
問題 | No.1640 簡単な色塗り |
ユーザー |
![]() |
提出日時 | 2023-02-27 22:37:04 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,656 bytes |
コンパイル時間 | 1,940 ms |
コンパイル使用メモリ | 145,296 KB |
最終ジャッジ日時 | 2025-02-10 23:59:19 |
ジャッジサーバーID (参考情報) |
judge4 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 26 WA * 27 |
ソースコード
#include<iostream> #include<string> #include<vector> #include<algorithm> #include<numeric> #include<cmath> #include<utility> #include<tuple> #include<cstdint> #include<cstdio> #include<iomanip> #include<map> #include<queue> #include<set> #include<stack> #include<deque> #include<unordered_map> #include<unordered_set> #include<bitset> #include<cctype> #include<chrono> #include<random> #include<cassert> #include<cstddef> #include<iterator> #include<string_view> #include<type_traits> #ifdef LOCAL # include "debug_print.hpp" # define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__) #else # define debug(...) (static_cast<void>(0)) #endif using namespace std; #define rep(i,n) for(int i=0; i<(n); i++) #define rrep(i,n) for(int i=(n)-1; i>=0; i--) #define FOR(i,a,b) for(int i=(a); i<(b); i++) #define RFOR(i,a,b) for(int i=(b-1); i>=(a); i--) #define ALL(v) v.begin(), v.end() #define RALL(v) v.rbegin(), v.rend() #define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() ); #define pb push_back using ll = long long; using D = double; using LD = long double; using P = pair<int, int>; template<typename T> using PQ = priority_queue<T,vector<T>>; template<typename T> using minPQ = priority_queue<T, vector<T>, greater<T>>; template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; } void yesno(bool flag) {cout << (flag?"Yes":"No") << "\n";} template<typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &p) { os << p.first << " " << p.second; return os; } template<typename T, typename U> istream &operator>>(istream &is, pair<T, U> &p) { is >> p.first >> p.second; return is; } template<typename T> ostream &operator<<(ostream &os, const vector<T> &v) { int s = (int)v.size(); for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i]; return os; } template<typename T> istream &operator>>(istream &is, vector<T> &v) { for (auto &x : v) is >> x; return is; } void in() {} template<typename T, class... U> void in(T &t, U &...u) { cin >> t; in(u...); } void out() { cout << "\n"; } template<typename T, class... U, char sep = ' '> void out(const T &t, const U &...u) { cout << t; if (sizeof...(u)) cout << sep; out(u...); } void outr() {} template<typename T, class... U, char sep = ' '> void outr(const T &t, const U &...u) { cout << t; outr(u...); } #include "atcoder/dsu.hpp" int main(){ ios_base::sync_with_stdio(false); cin.tie(nullptr); int n; in(n); vector<vector<P>> g(n); vector<int> prev(n,-1); vector<int> ans(n); auto get_path = [&] (int u, int v) -> vector<int> { vector<int> res = {v}; queue<int> q; q.push(u); while(q.size()){ int x = q.front(); q.pop(); for(auto [y,idx] : g[x]){ if(prev[y] == -1){ ans[idx] = y+1; prev[y] = x; q.push(y); } } } int now = v; while(now != u){ now = prev[now]; res.pb(now); } return res; }; atcoder::dsu d(n); vector<bool> loop(n,false); vector<bool> seen(n,false); rep(i,n){ int a,b; in(a,b); a--; b--; if(a == b){ int u = d.leader(a); if(loop[u]){ out("No"); return 0; } else{ loop[u] = true; seen[a] = true; ans[i] = a+1; } } else if(d.same(a,b)){ int u = d.leader(a); if(loop[u]){ out("No"); return 0; } else{ loop[u] = true; auto vp = get_path(a,b); for(int v : vp) seen[v] = true; ans[i] = b+1; } } else{ int u = d.leader(a); int v = d.leader(b); if(loop[u]&loop[v]){ out("No"); return 0; } int w = d.merge(a,b); loop[w] = loop[u] | loop[v]; g[a].pb({b,i}); g[b].pb({a,i}); } } queue<int> q; rep(i,n){ if(seen[i]) q.push(i); } while(q.size()){ int x = q.front(); q.pop(); for(auto [y,idx] : g[x]){ if(seen[y]) continue; seen[y] = true; ans[idx] = y+1; q.push(y); } } out("Yes"); rep(i,n) out(ans[i]); }