結果
問題 | No.2892 Lime and Karin |
ユーザー | 👑 seekworser |
提出日時 | 2024-07-05 13:47:00 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,599 ms / 8,000 ms |
コード長 | 3,703 bytes |
コンパイル時間 | 5,625 ms |
コンパイル使用メモリ | 293,240 KB |
実行使用メモリ | 33,572 KB |
最終ジャッジ日時 | 2024-07-05 21:11:17 |
合計ジャッジ時間 | 41,170 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 3 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 3 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 3 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 453 ms
11,596 KB |
testcase_15 | AC | 472 ms
11,264 KB |
testcase_16 | AC | 797 ms
15,320 KB |
testcase_17 | AC | 166 ms
6,540 KB |
testcase_18 | AC | 807 ms
15,236 KB |
testcase_19 | AC | 1,113 ms
19,956 KB |
testcase_20 | AC | 49 ms
5,376 KB |
testcase_21 | AC | 555 ms
12,704 KB |
testcase_22 | AC | 794 ms
15,112 KB |
testcase_23 | AC | 289 ms
8,452 KB |
testcase_24 | AC | 1,137 ms
20,176 KB |
testcase_25 | AC | 1,097 ms
20,176 KB |
testcase_26 | AC | 1,101 ms
20,184 KB |
testcase_27 | AC | 1,096 ms
20,196 KB |
testcase_28 | AC | 1,086 ms
20,184 KB |
testcase_29 | AC | 1,090 ms
20,368 KB |
testcase_30 | AC | 1,141 ms
20,140 KB |
testcase_31 | AC | 1,086 ms
20,172 KB |
testcase_32 | AC | 1,120 ms
20,304 KB |
testcase_33 | AC | 1,098 ms
20,188 KB |
testcase_34 | AC | 256 ms
26,580 KB |
testcase_35 | AC | 259 ms
26,512 KB |
testcase_36 | AC | 263 ms
26,636 KB |
testcase_37 | AC | 267 ms
26,512 KB |
testcase_38 | AC | 275 ms
26,504 KB |
testcase_39 | AC | 2,599 ms
32,992 KB |
testcase_40 | AC | 1,810 ms
33,572 KB |
testcase_41 | AC | 1,218 ms
27,748 KB |
testcase_42 | AC | 1,243 ms
33,464 KB |
testcase_43 | AC | 1,225 ms
29,624 KB |
testcase_44 | AC | 381 ms
9,608 KB |
testcase_45 | AC | 1,018 ms
18,464 KB |
testcase_46 | AC | 476 ms
11,036 KB |
testcase_47 | AC | 593 ms
13,256 KB |
testcase_48 | AC | 233 ms
7,832 KB |
testcase_49 | AC | 770 ms
14,676 KB |
testcase_50 | AC | 688 ms
23,448 KB |
testcase_51 | AC | 695 ms
23,224 KB |
testcase_52 | AC | 642 ms
23,336 KB |
testcase_53 | AC | 674 ms
23,336 KB |
testcase_54 | AC | 749 ms
23,392 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/convolution.hpp> using namespace std; using ll = long long; vector<ll> multiply(vector<ll> a, vector<ll> b) { return atcoder::convolution_ll(a, b); } int main() { ll n; cin >> n; vector g(n, vector<ll>(0)); for (size_t i = 0; i < n - 1; i++) { ll u, v; cin >> u >> v; --u; --v; g[u].push_back(v); g[v].push_back(u); } string si; cin >> si; vector<ll> s(n); for (size_t i=0; i<n; i++) s[i] = (si[i] == '0' ? -1 : 1); ll ans = 0; vector<bool> removed(n, false); vector<ll> sz(n, 0); auto centroid_decomposition = [&] (auto self, ll x) -> void { auto calc_total_size = [&] (auto self, ll u, ll par) -> ll { ll result = 1; for (auto v : g[u]) if (v != par && !removed[v]) result += self(self, v, u); return result; }; ll total_size = calc_total_size(calc_total_size, x, -1); ll m = (total_size + 1) / 2; auto find_centroid = [&] (auto self, ll u, ll par) -> pair<ll,ll> { ll c = -1; ll mn = n+1; sz[u] = 1; for (auto v : g[u]) { if (v == par || removed[v]) continue; auto [cn, mnn] = self(self, v, u); if (mnn < mn) { mn = mnn; c = cn; } sz[u] += sz[v]; } if (sz[u] >= m && sz[u]< mn) { mn = sz[u]; c = u; } return {c, mn}; }; auto [c, _] = find_centroid(find_centroid, x, -1); vector<vector<ll>> f(0); vector<ll> getas; for (auto v : g[c]) { if (removed[v]) continue; ll mx = 0; auto calc_geta = [&] (auto self, ll u, ll par, ll x) -> ll { ll result = x; mx = max(mx, x); for (auto v : g[u]) { if (v == par || removed[v]) continue; result = min(result, self(self, v, u, x+s[v])); } return result; }; ll geta = max(0LL, -calc_geta(calc_geta, v, c, s[v])); f.push_back(vector<ll>(mx+geta+1, 0)); getas.push_back(geta); auto calc_f = [&] (auto self, ll u, ll par, ll x) -> void { f[f.size()-1][x+geta] += 1; for (auto v : g[u]) { if (v == par || removed[v]) continue; self(self, v, u, x+s[v]); } }; calc_f(calc_f, v, c, s[v]); } ll gmax = 0; for (auto gi : getas) gmax = max(gmax, gi); vector<ll> total(gmax+sz[x], 0); for (size_t i=0; i<f.size(); i++) { for (size_t j=0; j<f[i].size(); j++) { total[j-getas[i]+gmax] += f[i][j]; } } for (size_t i=gmax+1-s[c]; i<total.size(); i++) ans += total[i]; total = atcoder::convolution_ll(total, total); gmax *= 2; for (size_t i=0; i<f.size(); i++) { f[i] = atcoder::convolution_ll(f[i], f[i]); getas[i] *= 2; for (size_t j=0; j<f[i].size(); j++) { if (f[i][j] != 0) total[j-getas[i]+gmax] -= f[i][j]; } } for (size_t i=gmax+1-s[c]; i<total.size(); i++) ans += total[i] / 2; removed[c] = true; for (auto v : g[c]) { if (!removed[v]) self(self, v); } return; }; centroid_decomposition(centroid_decomposition, 0); ll add = 0; for (size_t i=0; i<n; i++) add += (si[i] - '0'); cout << ans + add << endl; return 0; }