結果
問題 | No.277 根掘り葉掘り |
ユーザー |
|
提出日時 | 2019-10-27 21:54:17 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 210 ms / 3,000 ms |
コード長 | 3,673 bytes |
コンパイル時間 | 1,698 ms |
コンパイル使用メモリ | 173,520 KB |
実行使用メモリ | 21,376 KB |
最終ジャッジ日時 | 2024-09-14 21:07:33 |
合計ジャッジ時間 | 4,851 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 18 |
ソースコード
// includes#include <bits/stdc++.h>using namespace std;// macros#define pb emplace_back#define mk make_pair#define FOR(i, a, b) for(int i=(a);i<(b);++i)#define rep(i, n) FOR(i, 0, n)#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)#define all(x) (x).begin(),(x).end()#define sz(x) ((int)(x).size())#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())#define bit(n) (1LL<<(n))// functionstemplate <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(a > b){a = b; return 1;} return 0;}template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr =itr; if(++titr != st.end())os << " ";} return os;}template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr;auto titr = itr; if(++titr != st.end())os << " ";} return os;}template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; autotitr = itr; if(++titr != st.end())os << " ";} return os;}template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << p.first << " " << p.second; return os;}template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os <<itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end();++itr){ os << itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}// typesusing ll = long long int;using P = pair<int, int>;// constantsconst int inf = 1e9;const ll linf = 1LL << 50;const double EPS = 1e-10;const int mod = 1000000007;const int dx[4] = {-1, 0, 1, 0};const int dy[4] = {0, -1, 0, 1};// iostruct fast_io{fast_io(){ios_base::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(20);}} fast_io_;vector<int> edge[100010], child[100010];bool vis[100010];void dfs1(int i){vis[i] = true;for(auto e: edge[i]){if(!vis[e]){dfs1(e);child[i].pb(e);}}}int l[100010], r[100010];queue<int> q;void dfs(int i){if(sz(child[i]) == 0){r[i] = 0;q.push(i);return;}for(auto e: child[i]){l[e] = l[i] + 1;dfs(e);}}int main(int argc, char const* argv[]){int n; cin >> n;rep(i, n - 1){int x, y; cin >> x >> y, x--, y--;edge[x].pb(y);edge[y].pb(x);}dfs1(0);fill(r, r + n, -1);dfs(0);while(!q.empty()){auto p = q.front(); q.pop();for(auto e: edge[p]){if(r[e] < 0){r[e] = r[p] + 1;q.push(e);}}}rep(i, n)cout << min(l[i], r[i]) << endl;return 0;}