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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#283008 | #6330. XOR Reachable | Misuki# | WA | 242ms | 132904kb | C++20 | 4.9kb | 2023-12-13 17:45:40 | 2023-12-13 17:45:40 |
Judging History
answer
#pragma GCC optimize("O2")
#include <algorithm>
#include <array>
#include <bit>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cfenv>
#include <cfloat>
#include <chrono>
#include <cinttypes>
#include <climits>
#include <cmath>
#include <compare>
#include <complex>
#include <concepts>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fstream>
#include <functional>
#include <initializer_list>
#include <iomanip>
#include <ios>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <memory>
#include <new>
#include <numbers>
#include <numeric>
#include <ostream>
#include <queue>
#include <random>
#include <ranges>
#include <set>
#include <span>
#include <sstream>
#include <stack>
#include <streambuf>
#include <string>
#include <tuple>
#include <type_traits>
#include <variant>
//#define int ll
#define INT128_MAX (__int128)(((unsigned __int128) 1 << ((sizeof(__int128) * __CHAR_BIT__) - 1)) - 1)
#define INT128_MIN (-INT128_MAX - 1)
namespace R = std::ranges;
namespace V = std::views;
using namespace std;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<long long, long long>;
using tiii = tuple<int, int, int>;
using ldb = long double;
//#define double ldb
template<class T>
ostream& operator<<(ostream& os, const pair<T, T> pr) {
return os << pr.first << ' ' << pr.second;
}
template<class T, size_t N>
ostream& operator<<(ostream& os, const array<T, N> &arr) {
for(const T &X : arr)
os << X << ' ';
return os;
}
template<class T>
ostream& operator<<(ostream& os, const vector<T> &vec) {
for(const T &X : vec)
os << X << ' ';
return os;
}
/**
* template name: DSU
* author: Misuki
* last update: 2023/01/07
* verify: Library Checker - Unionfind
*/
struct DSU {
vector<int> dep;
vector<int> bos;
vector<int> sz;
vector<array<int, 2>> dh, bh, sh;
vector<ll> ch;
int size;
ll cost;
DSU(int _size) : size(_size), dep(_size, 0), bos(_size), sz(_size, 1), cost(0ll) {
iota(bos.begin(), bos.end(), 0);
}
int query(int V) {
if (bos[V] == V)
return V;
else
return bos[V];
}
bool merge(int V1, int V2) {
int B1 = query(V1);
int B2 = query(V2);
if (B1 == B2) {
return false;
}
dh.push_back({B1, dep[B1]});
bh.push_back({B1, bos[B1]});
sh.push_back({B1, sz[B1]});
dh.push_back({B2, dep[B2]});
bh.push_back({B2, bos[B2]});
sh.push_back({B2, sz[B2]});
ch.push_back(cost);
cost -= (ll)sz[B1] * (sz[B1] - 1) / 2 + (ll)sz[B2] * (sz[B2] - 1) / 2;
cost += (ll)(sz[B1] + sz[B2]) * (sz[B1] + sz[B2] - 1) / 2;
if (dep[B1] < dep[B2]) {
bos[B1] = B2, sz[B2] += sz[B1];
} else if (dep[B1] > dep[B2]) {
bos[B2] = B1, sz[B1] += sz[B2];
} else {
bos[B1] = B2, sz[B2] += sz[B1];
dep[B2] += 1;
}
return true;
}
void rollback() {
for(int i : {0, 1}) {
dep[dh.back()[0]] = dh.back()[1]; dh.pop_back();
bos[bh.back()[0]] = bh.back()[1]; bh.pop_back();
sz[sh.back()[0]] = sh.back()[1]; sh.pop_back();
}
cost = ch.back(); ch.pop_back();
}
};
vector<array<int, 2>> nxt(1, {-1, -1});
vector<vector<int>> ope(1), qry(1);
int go(int v, int bit) {
if (nxt[v][bit] == -1) {
nxt[v][bit] = ssize(nxt);
nxt.push_back({-1, -1});
ope.emplace_back();
qry.emplace_back();
}
return nxt[v][bit];
}
void insert(int c, int eid, int k) {
for(int v = 0, bit = 29; bit >= 0; bit--) {
if (k >> bit & 1) {
int tmp = go(v, c >> bit & 1);
ope[tmp].emplace_back(eid);
v = go(v, ~c >> bit & 1);
} else {
v = go(v, c >> bit & 1);
}
}
}
void insert2(int d, int qid) {
int v = 0;
for(int bit = 29; bit >= 0; bit--)
v = go(v, d >> bit & 1);
qry[v].emplace_back(qid);
}
signed main() {
ios::sync_with_stdio(false), cin.tie(NULL);
int n, m, k; cin >> n >> m >> k;
vector<array<int, 3>> e(m);
for(auto &[u, v, w] : e) {
cin >> u >> v >> w;
u--, v--;
}
int q; cin >> q;
vector<int> d(q);
for(int &x : d)
cin >> x;
for(int i = 0; i < m; i++)
insert(e[i][2], i, k);
for(int i = 0; i < q; i++)
insert2(d[i], i);
DSU dsu(n);
vector<ll> ans(q);
auto dfs = [&](int v, auto self) -> void {
if (v == -1) return;
int cnt = 0;
for(int eid : ope[v])
cnt += dsu.merge(e[eid][0], e[eid][1]);
for(int qid : qry[v])
ans[qid] = dsu.cost;
self(nxt[v][0], self);
self(nxt[v][1], self);
for(int i = 0; i < cnt; i++)
dsu.rollback();
};
dfs(0, dfs);
for(ll x : ans)
cout << x << '\n';
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3588kb
input:
4 5 5 1 2 17 1 3 4 2 3 20 2 4 3 3 4 5 4 0 7 16 167
output:
2 6 3 0
result:
ok 4 number(s): "2 6 3 0"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3708kb
input:
9 13 488888932 2 7 771479959 3 8 783850182 5 7 430673756 6 8 350738034 4 9 400768807 2 3 83653266 1 2 829786563 5 8 357613791 7 9 579696618 3 7 423191200 3 5 867380255 1 9 907715012 6 9 1033650694 8 498260055 144262908 117665696 848664012 983408133 32610599 478007408 134182829
output:
16 7 5 13 13 16 16 5
result:
ok 8 numbers
Test #3:
score: -100
Wrong Answer
time: 242ms
memory: 132904kb
input:
446 99235 764320136 1 2 467639025 1 39 240791819 1 197 320023434 1 391 968343602 1 116 841220144 1 345 697806443 1 409 489643820 1 339 733516272 1 89 560099922 1 431 722346703 1 433 246809211 1 344 769002876 1 234 597076758 1 178 505730391 1 75 826728597 1 74 14756981 1 63 280238017 1 288 638627144 ...
output:
3206785848745 3191047971721 3203945009821 3157893732805 99235 3155330867545 3175348807981 99235 99235 99235 99235 99235 99235 99235 3159688357525 99235 99235 99235 3202395991921 3156868461853 3204203215885 99235 99235 99235 99235 99235 99235 99235 3209886381505 3158662795261 3199557098545 99235 3198...
result:
wrong answer 1st numbers differ - expected: '99235', found: '3206785848745'