結果
問題 | No.1817 Reversed Edges |
ユーザー |
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提出日時 | 2022-02-04 03:51:57 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 252 ms / 2,000 ms |
コード長 | 1,573 bytes |
コンパイル時間 | 2,225 ms |
コンパイル使用メモリ | 204,708 KB |
最終ジャッジ日時 | 2025-01-27 18:33:43 |
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 * 2 |
other | AC * 23 |
ソースコード
#include <bits/stdc++.h>using namespace std;#include <atcoder/modint>using namespace atcoder;using mint = modint998244353;//using mint = modint1000000007;using ll = long long;using ld = long double;using pll = pair<ll, ll>;using tlll = tuple<ll, ll, ll>;constexpr ll INF = 1LL << 60;template<class T> bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return false;}template<class T> bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return false;}ll safemod(ll A, ll M) {return (A % M + M) % M;}ll divfloor(ll A, ll B) {if (B < 0) {return divfloor(-A, -B);} return (A - safemod(A, B)) / B;}ll divceil(ll A, ll B) {if (B < 0) {return divceil(-A, -B);} return divfloor(A + B - 1, B);}template<class T> void sortunique(vector<T> &V) {sort(V.begin(), V.end()); V.erase(unique(V.begin(), V.end()), V.end());}#define FINALANS(A) do {cout << (A) << '\n'; exit(0);} while (false)vector<vector<ll>> G;vector<pll> his;void dfs(ll v, ll pv){his.push_back(make_pair(v, pv));for (auto nv : G.at(v)){if (nv == pv)continue;dfs(nv, v);}}int main(){ll N;cin >> N;G.resize(N);for (ll i = 0; i < N - 1; i++){ll a, b;cin >> a >> b;a--, b--;G.at(a).push_back(b);G.at(b).push_back(a);}dfs(0, -1);vector<ll> ans(N, 0);for (auto &[v, pv] : his){if (pv > v)ans.at(0)++;}for (auto &[v, pv] : his){if (v == 0)continue;ans.at(v) = ans.at(pv) + (v > pv ? 1 : -1);}for (ll i = 0; i < N; i++){cout << ans.at(i) << endl;}}