結果
問題 | No.1817 Reversed Edges |
ユーザー | mikam |
提出日時 | 2022-01-22 17:31:37 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 108 ms / 2,000 ms |
コード長 | 4,126 bytes |
コンパイル時間 | 4,855 ms |
コンパイル使用メモリ | 273,212 KB |
実行使用メモリ | 32,256 KB |
最終ジャッジ日時 | 2024-05-05 16:52:56 |
合計ジャッジ時間 | 8,943 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 87 ms
16,384 KB |
testcase_08 | AC | 37 ms
9,600 KB |
testcase_09 | AC | 84 ms
15,488 KB |
testcase_10 | AC | 40 ms
10,496 KB |
testcase_11 | AC | 55 ms
12,416 KB |
testcase_12 | AC | 108 ms
17,980 KB |
testcase_13 | AC | 104 ms
18,048 KB |
testcase_14 | AC | 105 ms
18,176 KB |
testcase_15 | AC | 105 ms
18,048 KB |
testcase_16 | AC | 97 ms
18,048 KB |
testcase_17 | AC | 108 ms
18,048 KB |
testcase_18 | AC | 108 ms
18,048 KB |
testcase_19 | AC | 106 ms
18,048 KB |
testcase_20 | AC | 106 ms
18,176 KB |
testcase_21 | AC | 108 ms
18,048 KB |
testcase_22 | AC | 48 ms
18,244 KB |
testcase_23 | AC | 49 ms
18,120 KB |
testcase_24 | AC | 70 ms
32,256 KB |
ソースコード
#include <atcoder/all> using namespace atcoder; #include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define all(v) v.begin(),v.end() #define inc(x,l,r) ((l)<=(x)&&(x)<(r)) #define Unique(x) sort(all(x)), x.erase(unique(all(x)), x.end()) typedef long long ll; #define int ll using ld = long double; using vi = vector<int>; using vs = vector<string>; using P = pair<int,int>; using vp = vector<P>; template<typename T> using priority_queue_greater = priority_queue<T, vector<T>, greater<T>>; template<typename T> ostream &operator<<(ostream &os,const vector<T> &v){rep(i,v.size())os<<v[i]<<(i+1!=v.size()?" ":"");return os;} template<typename T> istream &operator>>(istream& is,vector<T> &v){for(T &in:v)is>>in;return is;} template<class... T> void in(T&... a){(cin>> ... >> a);} template<class T> void out(T& a){cout <<a<< '\n';} template<class T,class... Ts> void out(const T&a, const Ts&... b){cout<< a;(cout<<...<<(cout<<' ',b));cout<<'\n';} #define INT(...) int __VA_ARGS__; in(__VA_ARGS__) #define STR(...) string __VA_ARGS__; in(__VA_ARGS__) #define pcnt __builtin_popcount int ceil(int x,int y){return x/y+!!(x%y);} bool ins(string s,string t){return s.find(t)!=string::npos;} P operator+ (const P &p, const P &q){ return P{p.first+q.first,p.second+q.second};} P operator- (const P &p, const P &q){ return P{p.first-q.first,p.second-q.second};} ostream &operator<< (ostream &os, const P &p){os << p.first <<" "<<p.second;return os;} ostream &operator<< (ostream &os, const modint1000000007 &m){os << m.val();return os;} ostream &operator<< (ostream &os, const modint998244353 &m){os << m.val();return os;} template<typename T> bool chmax(T &a, const T b) {if (a < b) {a = b; return true;} else return false; } template<typename T> bool chmin(T &a, const T b) {if (a > b) {a = b; return true;} else return false; } void yesno(bool ok){ cout<<(ok?"Yes":"No")<<endl;} vector<P> dxdy{{1,0},{0,1},{-1,0},{0,-1}}; const int INF = 1e18; //using mint = modint1000000007; //using mint = modint998244353; template <class S, S (*merge)(S, S), S (*fv)(S, int, bool), S (*fe)(S, int, int, int), S (*e)()> struct rerooting { int N; vector<vector<P>> G; vector<vector<S>> dp; vector<S> ans; rerooting(int n) : N(n) { G.resize(N); dp.resize(N); ans.resize(N); } void add_edge(int u, int v, int w = 1) { assert(0 <= u && u < N); assert(0 <= v && v < N); G[u].emplace_back(v, w); } S dfs1(int u, int p) { S res = e(); int m = G[u].size(); for (int i = 0; i < m; i++) { auto [v, w] = G[u][i]; if (v == p) continue; dp[u][i] = dfs1(v, u); res = merge(res, fe(dp[u][i], u, v, w)); } return fv(res, u, true); } void dfs2(int u, int p, S px) { int m = G[u].size(); for (int i = 0; i < m; i++) { auto [v, _] = G[u][i]; if (v == p) { dp[u][i] = px; break; } } vector<S> dp_R(m+1); dp_R[m] = e(); for (int i = m; 0 < i; i--) { auto [v, w] = G[u][i-1]; dp_R[i-1] = merge(fe(dp[u][i-1], u, v, w), dp_R[i]); } ans[u] = fv(dp_R[0], u, false); S dp_l = e(); for (int i = 0; i < m; i++) { auto [v, w] = G[u][i]; if (v != p) dfs2(v, u, fv(merge(dp_l, dp_R[i+1]), u, true)); dp_l = merge(dp_l, fe(dp[u][i], u, v, w)); } } vector<S> solve(){ for(int u = 0;u < N; u++) dp[u].resize(G[u].size()); dfs1(0,-1); dfs2(0,-1,e()); return ans; } }; using S = int; S merge(S a, S b) { return a + b; }; S fv(S x, int u, bool is_root) { return x; }; S fe(S x, int s, int t, int w) { return x + (s > t); }; S e() { return 0; }; signed main() { cin.tie(0); ios_base::sync_with_stdio(false); cout << fixed << setprecision(20); int n;cin>>n; rerooting<S, merge, fv, fe, e> re(n); rep(i,n-1){ int u,v;cin>>u>>v; u--;v--; re.add_edge(u,v); re.add_edge(v,u); } for(auto e:re.solve())cout<<e<<"\n"; return 0; }