結果
| 問題 |
No.3272 Separate Contractions
|
| コンテスト | |
| ユーザー |
amentorimaru
|
| 提出日時 | 2025-09-12 23:56:45 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,722 bytes |
| コンパイル時間 | 4,906 ms |
| コンパイル使用メモリ | 267,884 KB |
| 実行使用メモリ | 40,376 KB |
| 最終ジャッジ日時 | 2025-09-12 23:57:03 |
| 合計ジャッジ時間 | 15,671 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | WA * 3 |
| other | WA * 43 |
ソースコード
#define ATCODER
#include <bit>
#include <cstdint>
#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <queue>
#include <cassert>
#include <unordered_map>
#include <unordered_set>
#include <queue>
#include <math.h>
#include <climits>
#include <set>
#include <map>
#include <list>
#include <iterator>
#include <bitset>
#include <chrono>
#include <type_traits>
using namespace std;
using ll = long long;
#define FOR(i, a, b) for(ll i=(a); i<(b);i++)
#define REP(i, n) for(ll i=0; i<(n);i++)
#define ROF(i, a, b) for(ll i=(b-1); i>=(a);i--)
#define PER(i, n) for(ll i=n-1; i>=0;i--)
#define VL vector<ll>
#define VVL vector<vector<ll>>
#define VP vector< pair<ll,ll> >
#define VVP vector<vector<pair<ll,ll>>>
#define all(i) begin(i),end(i)
#define SORT(i) sort(all(i))
#define EXISTBIT(x,i) (((x>>i) & 1) != 0)
#define MP(a,b) make_pair(a,b)
#ifdef ATCODER
#include <atcoder/all>
using namespace atcoder;
using mint = modint1000000007;
using mint2 = modint998244353;
#endif
template<typename T = ll>
vector<T> read(size_t n) {
vector<T> ts(n);
for (size_t i = 0; i < n; i++) cin >> ts[i];
return ts;
}
template<typename TV, const ll N> void read_tuple_impl(TV&) {}
template<typename TV, const ll N, typename Head, typename... Tail>
void read_tuple_impl(TV& ts) {
get<N>(ts).emplace_back(*(istream_iterator<Head>(cin)));
read_tuple_impl<TV, N + 1, Tail...>(ts);
}
template<typename... Ts> decltype(auto) read_tuple(size_t n) {
tuple<vector<Ts>...> ts;
for (size_t i = 0; i < n; i++) read_tuple_impl<decltype(ts), 0, Ts...>(ts);
return ts;
}
template<typename T> T det2(array<T, 4> ar) { return ar[0] * ar[3] - ar[1] * ar[2]; }
template<typename T> T det3(array<T, 9> ar) { return ar[0] * ar[4] * ar[8] + ar[1] * ar[5] * ar[6] + ar[2] * ar[3] * ar[7] - ar[0] * ar[5] * ar[7] - ar[1] * ar[3] * ar[8] - ar[2] * ar[4] * ar[6]; }
template<typename T> bool chmax(T& tar, T src) { return tar < src ? tar = src, true : false; }
template<typename T> bool chmin(T& tar, T src) { return tar > src ? tar = src, true : false; }
template<typename T> void inc(vector<T>& ar) { for (auto& v : ar) v++; }
template<typename T> void dec(vector<T>& ar) { for (auto& v : ar) v--; }
template<typename T> vector<pair<T, int>> id_sort(vector<T>& a) {
vector<T, int> res(a.size());
for (int i = 0; i < a.size(); i++)res[i] = MP(a[i], i);
SORT(res);
return res;
}
using val = pair<ll, ll>; using func = ll;
val op(val a, val b) { return MP(a.first + b.first, a.second + b.second); }
val e() { return MP(0LL, 0LL); }
val mp(func f, val a) { return MP(f * a.second, a.second); }
func comp(func f, func g) {
if (g == -1)return f;
else return g;
}
func id() { return -1; }
val mp2(func f, val a) {
if (f == -1) {
return e();
}
return MP(a.first + f * a.second, a.second);
}
func comp2(func f, func g) {
if (f == -1) {
return g;
}
if (g == -1) {
return -1;
}
return f + g;
}
func id2() { return 0; }
// Rook
ll dxr[4] = { 1,0,-1,0 };
ll dyr[4] = { 0,1,0,-1 };
// Bishop
ll dxb[4] = { -1,-1,1,1 };
ll dyb[4] = { -1,1,-1,1 };
// qween
ll dxq[8] = { 0,-1,-1,-1,0,1,1,1 };
ll dyq[8] = { -1,-1,0,1,1,1,0,-1 };
void solve() {
// 直径の例の図を考えればよさそう
// とはいえWAに戻ろう
ll n;
cin >> n;
VVP g(n);
REP(i, n - 1) {
ll u, v;
cin >> u >> v;
u--; v--;
g[u].emplace_back(v, i);
g[v].emplace_back(u, i);
}
auto dfs = [&](auto self, ll now, ll parent)-> pair<ll, ll> {
pair<ll, ll> res;
res.first = 0;
res.second = now;
for (auto& [v, i] : g[now]) {
if (v == parent)
continue;
auto r = self(self, v, now);
r.first++;
chmax(res, r);
}
return res;
};
auto [d0, v0] = dfs(dfs, 0, -1);
auto [d1, v1] = dfs(dfs, v0, -1);
VL dd(n);
VL ans(n - 1);
VL ans2(n - 1);
auto dfs2 = [&](auto self, ll now, ll goal, ll dist, ll parent)-> pair<ll, bool> {
pair<ll, bool> res;
chmax(dd[now], dist);
res.first = 1;
res.second = now == goal;
for (auto& [v, i] : g[now]) {
if (v == parent)
continue;
auto r = self(self, v, goal, dist + 1, now);
if ((dist + 1) * 2 > d1)
res.first += r.first;
res.second |= r.second;
if (!r.second) {
ans[i] = r.first;
chmax(ans2[i], dist);
}
else if (dist * 2 < d1) {
ans[i] = r.first;
chmax(ans2[i], dist);
}
}
return res;
};
dfs2(dfs2, v0, v1, 0, -1);
dfs2(dfs2, v1, v0, 0, -1);
ll sum = 0;
REP(i, n)sum += dd[i];
REP(i, n - 1) {
cout << sum - ans[i] - ans2[i] << "\n";
}
return;
}
int main() {
ll t = 1;
// cin >> t;
while (t--) {
solve();
}
return 0;
}
amentorimaru