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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 |
---|---|---|---|---|---|---|---|---|---|
#159934 | #7108. Couleur | ucup-team1469# | AC ✓ | 1719ms | 30540kb | C++20 | 5.1kb | 2023-09-02 19:07:32 | 2023-09-02 19:07:32 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define rep(i, l, r) for (int i = (l); i < (r); ++i)
struct BIT {
int n;
vector<int> data;
BIT(int n_) : n(n_), data(n + 1, 0) {}
void add(int i, int v) {
++i;
while (i <= n) {
data[i] += v;
i += i & -i;
}
}
int fold(int l, int r) {
int ret = 0;
while (l < r) {
ret += data[r];
r -= r & -r;
}
while (r < l) {
ret -= data[l];
l -= l & -l;
}
return ret;
}
};
template <class C, class T>
int lwb(const C &con, const T &v) {
return lower_bound(con.begin(), con.end(), v) - con.begin();
}
template <class C, class T>
int upb(const C &con, const T &v) {
return upper_bound(con.begin(), con.end(), v) - con.begin();
}
void solve() {
int N;
cin >> N;
vector<int> A(N);
for (auto &e : A) cin >> e;
set<tuple<int, int, int, i64>> s;
vector<BIT> fens;
vector<vector<int>> ps;
multiset<i64> answers;
{
vector<int> vec;
rep (i, 0, N) {
vec.push_back(A[i]);
}
ranges::sort(vec);
vec.erase(ranges::unique(vec).begin(), vec.end());
const int m = (int)vec.size();
BIT tree(m);
i64 inv = 0;
rep (i, 0, N) {
const int p = lwb(vec, A[i]);
inv += tree.fold(p + 1, m);
tree.add(p, 1);
}
ps.push_back(vec);
fens.push_back(tree);
s.insert({0, N, 0, inv});
answers.insert(inv);
}
int nowMaxId = 1;
i64 nowAns = *answers.rbegin();
auto divide = [&](int l, int r, int m) {
assert(l <= m and m < r);
const auto itr = s.lower_bound({l, 0, 0, 0ll});
const int id = std::get<2>(*itr);
if (r - l == 1) return;
if (m - l >= r - (m + 1)) {
// base : L
vector<int> vs;
rep (i, m + 1, r) {
vs.push_back(A[i]);
}
ranges::sort(vs);
vs.erase(ranges::unique(vs).begin(), vs.end());
ps.push_back(vs);
const int x = vs.size();
BIT tree(x);
i64 inv = 0, binv = std::get<3>(*itr);
rep (i, m + 1, r) {
const int p = lwb(vs, A[i]);
inv += tree.fold(p + 1, x);
tree.add(p, 1);
const int p2 = lwb(ps[id], A[i]);
fens[id].add(p2, -1);
}
const int p = lwb(ps[id], A[m]);
fens[id].add(p, -1);
binv -= fens[id].fold(p + 1, ps[id].size());
binv -= tree.fold(0, lwb(vs, A[m]));
fens.push_back(tree);
rep (i, m + 1, r) {
const int p2 = lwb(ps[id], A[i]);
binv -= fens[id].fold(p2 + 1, (int)ps[id].size());
}
binv -= inv;
answers.erase(answers.find(std::get<3>(*itr)));
answers.insert(inv);
answers.insert(binv);
s.erase(itr);
s.insert({l, m, id, binv});
s.insert({m + 1, r, nowMaxId++, inv});
} else {
// base : R
vector<int> vs;
rep (i, l, m) {
vs.push_back(A[i]);
}
ranges::sort(vs);
vs.erase(ranges::unique(vs).begin(), vs.end());
ps.push_back(vs);
const int x = vs.size();
BIT tree(x);
i64 inv = 0, binv = std::get<3>(*itr);
rep (i, l, m) {
const int p = lwb(vs, A[i]);
inv += tree.fold(p + 1, x);
tree.add(p, 1);
const int p2 = lwb(ps[id], A[i]);
fens[id].add(p2, -1);
}
const int p = lwb(ps[id], A[m]);
fens[id].add(p, -1);
binv -= fens[id].fold(0, p);
binv -= tree.fold(upb(vs, A[m]), x);
fens.push_back(tree);
rep (i, l, m) {
const int p2 = lwb(ps[id], A[i]);
binv -= fens[id].fold(0, p2);
}
binv -= inv;
answers.erase(answers.find(std::get<3>(*itr)));
answers.insert(inv);
answers.insert(binv);
s.erase(itr);
s.insert({l, m, nowMaxId++, inv});
s.insert({m + 1, r, id, binv});
}
};
std::vector<i64> P(N);
for (auto &e : P) cin >> e;
rep (q, 0, N) {
nowAns = *answers.rbegin();
cout << nowAns << (q == N - 1 ? '\n' : ' ');
P[q] ^= nowAns;
--P[q];
assert(0 <= P[q] and P[q] < N);
auto itr = s.upper_bound({P[q], N + 1, N + 1, N + 1});
--itr;
const auto &[l, r, id, score] = *itr;
divide(l, r, P[q]);
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int T;
cin >> T;
while (T--) {
solve();
}
}
这程序好像有点Bug,我给组数据试试?
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3696kb
input:
3 5 4 3 1 1 1 5 4 5 3 1 10 9 7 1 4 7 8 5 7 4 8 21 8 15 5 9 2 4 5 10 6 15 4 8 8 1 12 1 10 14 7 14 2 9 13 10 3 37 19 23 15 7 2 10 15 2 13 4 5 8 7 10
output:
7 0 0 0 0 20 11 7 2 0 0 0 0 0 0 42 31 21 14 14 4 1 1 1 0 0 0 0 0 0
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 1719ms
memory: 30540kb
input:
11116 10 10 5 10 3 6 4 8 5 9 8 31 27 24 11 12 3 0 2 3 1 10 8 2 7 2 8 10 1 10 9 10 6 5 2 13 2 1 0 1 3 1 10 7 10 7 6 1 3 10 6 7 9 21 18 10 1 6 5 4 8 9 10 10 2 10 4 8 8 5 7 2 6 7 20 10 9 1 15 0 4 2 9 7 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 10 1 2 3 4 5 6 7 8 9 10 6 3 5 2 7 10 9 1 4 8 10 1 10 1 3...
output:
21 18 16 12 10 6 4 1 1 0 12 12 10 10 4 4 4 2 1 0 20 16 9 5 3 3 3 0 0 0 22 14 8 8 5 5 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19 12 7 4 4 2 2 1 0 0 20 18 8 3 1 1 0 0 0 0 45 21 21 10 3 3 3 0 0 0 17 11 8 2 1 1 1 0 0 0 13 4 1 0 0 0 0 0 0 0 29 27 22 15 9 7 4 3 1 0 26 16 9 2 1 1 1 1 1 0 0 0 0 0 0 ...
result:
ok 11116 lines
Extra Test:
score: 0
Extra Test Passed