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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#780114 | #7108. Couleur | rgnerdplayer | RE | 0ms | 3628kb | C++23 | 2.8kb | 2024-11-25 01:17:40 | 2024-11-25 01:17:40 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#include <bits/extc++.h>
using namespace __gnu_pbds;
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
using i64 = long long;
int main() {
cin.tie(nullptr)->sync_with_stdio(false);
int t;
cin >> t;
auto solve = [&]() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
vector<pair<int, int>> segs{{0, n - 1}};
vector<int> id(n, 0);
vector<i64> inv(1);
multiset<i64> vals;
vector<ordered_set<pair<int, int>>> s(1);
for (int i = 0; i < n; i++) {
inv[0] += s[0].size() - s[0].order_of_key(pair(a[i], n));
s[0].insert(pair(a[i], i));
}
vals.emplace(inv[0]);
i64 lst = 0;
for (int rep = 0; rep < n; rep++) {
cout << (lst = *vals.rbegin()) << " \n"[rep + 1 == n];
i64 p;
cin >> p;
p ^= lst;
assert(1 <= p && p <= n);
p--;
int cur = id[p];
id[p] = -1;
auto [l, r] = segs[cur];
vals.extract(inv[cur]);
int nxt = segs.size();
inv.emplace_back();
s.emplace_back();
if (p - l < r - p) {
segs[cur] = {p + 1, r};
segs.emplace_back(p - 1, r);
for (int i = l; i < p; i++) {
id[i] = nxt;
}
for (int i = l; i <= p; i++) {
s[cur].erase(pair(a[i], i));
inv[cur] -= s[cur].order_of_key(pair(a[i], -1));
}
for (int i = p - 1; i >= l; i--) {
inv[nxt] += s[nxt].order_of_key(pair(a[i], -1));
s[nxt].insert(pair(a[i], i));
}
} else {
segs[cur] = {l, p - 1};
segs.emplace_back(p + 1, r);
for (int i = p + 1; i <= r; i++) {
id[i] = nxt;
}
for (int i = r; i >= p; i--) {
s[cur].erase(pair(a[i], i));
inv[cur] -= s[cur].size() - s[cur].order_of_key(pair(a[i], n));
}
for (int i = p + 1; i <= r; i++) {
inv[nxt] += s[nxt].size() - s[nxt].order_of_key(pair(a[i], n));
s[nxt].insert(pair(a[i], i));
}
}
vals.insert(inv[cur]);
vals.insert(inv[nxt]);
assert(inv.size() == segs.size() && segs.size() == s.size() && vals.size() == s.size());
}
};
while (t--) {
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3628kb
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: -100
Runtime Error
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...