結果
問題 | No.277 根掘り葉掘り |
ユーザー | akusyounin2412 |
提出日時 | 2018-04-02 22:58:22 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 276 ms / 3,000 ms |
コード長 | 2,817 bytes |
コンパイル時間 | 1,413 ms |
コンパイル使用メモリ | 128,036 KB |
実行使用メモリ | 32,328 KB |
最終ジャッジ日時 | 2024-06-26 06:51:37 |
合計ジャッジ時間 | 5,443 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 4 ms
5,888 KB |
testcase_01 | AC | 3 ms
5,760 KB |
testcase_02 | AC | 4 ms
5,888 KB |
testcase_03 | AC | 4 ms
6,016 KB |
testcase_04 | AC | 4 ms
5,760 KB |
testcase_05 | AC | 4 ms
5,760 KB |
testcase_06 | AC | 4 ms
6,016 KB |
testcase_07 | AC | 4 ms
5,888 KB |
testcase_08 | AC | 4 ms
5,888 KB |
testcase_09 | AC | 271 ms
32,328 KB |
testcase_10 | AC | 217 ms
14,872 KB |
testcase_11 | AC | 245 ms
14,020 KB |
testcase_12 | AC | 261 ms
22,988 KB |
testcase_13 | AC | 276 ms
12,800 KB |
testcase_14 | AC | 251 ms
13,312 KB |
testcase_15 | AC | 250 ms
14,276 KB |
testcase_16 | AC | 255 ms
13,512 KB |
testcase_17 | AC | 246 ms
13,056 KB |
testcase_18 | AC | 243 ms
13,128 KB |
testcase_19 | AC | 244 ms
12,868 KB |
ソースコード
# include <iostream> # include <algorithm> #include <array> # include <cassert> #include <cctype> #include <climits> #include <numeric> # include <vector> # include <string> # include <set> # include <map> # include <cmath> # include <iomanip> # include <functional> # include <tuple> # include <utility> # include <stack> # include <queue> # include <list> # include <bitset> # include <complex> # include <chrono> # include <random> # include <limits.h> # include <unordered_map> # include <unordered_set> # include <deque> # include <cstdio> # include <cstring> #include <stdio.h> #include <stdlib.h> #include <cstdint> using namespace std; using LL = long long; using ULL = unsigned long long; constexpr long long MOD = 1000000000 + 7; constexpr long long INF = std::numeric_limits<long long>::max(); const double PI = acos(-1); #define fir first #define sec second #define debug(x) cerr<<#x<<": "<<x<<'\n' typedef pair<LL, LL> Pll; typedef pair<LL, pair<LL, LL>> Ppll; typedef pair<LL, pair<LL, bitset<100001>>> Pbll; typedef pair<LL, pair<LL, vector<LL>>> Pvll; typedef pair<LL, LL> Vec2; struct Tll { LL first, second, third; }; typedef pair<LL, Tll> Ptll; #define rep(i,rept) for(LL i=0;i<rept;i++) #define Mfor(i,mf) for(LL i=mf-1;i>=0;i--) LL h, w, n, m, k, s, t, q, sum, last, cnt, ans[100010],a[1000],d[100010]; string str; struct Edge { LL to, cost; }; vector<Edge>vec[100010]; bool f; char c; void YN(bool f) { if (f) cout << "YES" << endl; else cout << "NO" << endl; } void yn(bool f) { if (f) cout << "Yes" << endl; else cout << "No" << endl; } void dfs1(LL idx, LL par){ bool ff = 0; if (par != -1) d[idx] = min(d[idx], d[par] + 1); for (Edge &e : vec[idx]) { if (e.to == par) continue; ff = 1; dfs1(e.to, idx); d[idx] = min(d[idx], d[e.to] + e.cost); } if (ff == 0)d[idx] = 0; } LL dfs2(LL idx, LL d_par, LL par){ vector<pair<LL, LL>> d_child; d_child.emplace_back(INF/2, -1); for (Edge &e : vec[idx]) { if (e.to == par) d_child.emplace_back(d_par + e.cost, e.to); else d_child.emplace_back(e.cost + d[e.to], e.to); } sort(d_child.rbegin(), d_child.rend(), [](Pll x, Pll y) {return x.fir > y.fir; }); LL ret = min(d[idx],d_child[0].first); for (Edge &e : vec[idx]) { if (e.to == par) continue; // 基本は d_child() の最大が d_par になるが, e.to の部分木が最大値のときはそれを取り除く必要がある ret = min(ret, dfs2(e.to, d_child[d_child[0].second == e.to].first, idx)+1); } ans[idx] = min(ans[idx], ret); return (ret); } int main() { cin >> n; rep(i, n)d[i] = INF / 4; rep(i, n)ans[i] = INF / 4; rep(i, n - 1) { LL x, y; cin >> x >> y; x--, y--; vec[x].push_back(Edge{ y,1 }); vec[y].push_back(Edge{ x,1 }); } d[0] = 0; dfs1(0, -1); dfs2(0, 0, -1); rep(i, n) cout << ans[i] << endl; return 0; }