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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#796772 | #5466. Permutation Compression | yyksam | WA | 0ms | 3880kb | C++20 | 4.2kb | 2024-12-02 02:41:46 | 2024-12-02 02:41:46 |
Judging History
answer
#include<bits/stdc++.h>
#include<bits/extc++.h>
using namespace std;
using namespace __gnu_cxx;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair<int, int> pii;
const int N = 2e5 + 10;
const int inf = 0x3f3f3f3f;
int lowbit(int x) {
return (x & (-x));
}
struct tree_array {
int n;
vector<ll> t1, t2;
tree_array(int n) {
this->n = n;
t1.resize(n + 10);
t2.resize(n + 10);
}
void insert(int l, int r, ll x) {
update(l, x);
update(r + 1, -x);
}
void update(int idx, ll x) {
for (int i = idx; i <= n; i += lowbit(i)) {
t1[i] += x;
t2[i] += (ll)idx * x;
}
}
ll getsum(int idx) {
ll res = 0;
for (int i = idx; i; i -= lowbit(i)) {
res += ((ll)idx + 1) * t1[i] - t2[i];
}
return res;
}
};
int stk[N], top, ix[N];
tree<pair<int, int>, null_type, less<>, rb_tree_tag, tree_order_statistics_node_update> treap;
void work() {
int n, m, k, cnt = 0;
cin >> n >> m >> k;
treap.clear();
tree_array le(n), ri(n);
vector<int> a(n + 10), b(m + 10), c(k + 10);
vector<int> left(n + 10), right(n + 10);
vector<int> cntl(n + 10), cntr(n + 10);
vector<bool> isc(n + 10);
for (int i = 1; i <= n; i++) cin >> a[i];
for (int i = 1; i <= m; i++) cin >> b[i];
for (int i = 1; i <= k; i++) {
cin >> c[i];
treap.insert({c[i], ++cnt});
}
if (k < n - m) {
cout << "NO\n";
return;
}
int idx = 1;
vector<pii> gai;
for (int i = 1; i <= m; i++) {
while (a[idx] != b[i] && idx <= n) {
isc[idx] = true;
gai.emplace_back(a[idx], idx);
idx++;
}
if (idx > n) {
cout << "NO\n";
return;
}
idx++;
}
while (idx <= n) {
gai.emplace_back(a[idx], idx);
isc[idx++] = true;
}
//for (auto [num, dis] : gai) cout << num << " " << dis << '\n';
sort(gai.begin(), gai.end(), [&](pii a, pii b) {
return a.first > b.first;
});
auto bin_search = [&](int k, int def) {
int l = 1, r = top, res = def;
while (l <= r) {
int mid = l + r >> 1;
if (stk[mid] > k) {
res = ix[mid];
l = mid + 1;
}
else r = mid - 1;
}
return res;
};
top = 0;
for (int i = 1; i <= n; i++) {
if (isc[i]) {
left[i] = i - bin_search(a[i], 0);
}
else {
while (top && stk[top] <= a[i]) top--;
stk[++top] = a[i];
ix[top] = i;
}
}
top = 0;
for (int i = n; i >= 1; i--) {
if (isc[i]) {
right[i] = bin_search(a[i], n + 1) - i;
}
else {
while (top && stk[top] <= a[i]) top--;
stk[++top] = a[i];
ix[top] = i;
}
}
for (int i = 0; i < gai.size(); i++) {
int num = gai[i].first, dis = gai[i].second;
int l = 1, r = k - i, ans = -1;
while (l <= r) {
int mid = l + r >> 1;
int len = (*treap.find_by_order(mid - 1)).first;
if (len <= le.getsum(dis) - le.getsum(dis - 1) + ri.getsum(dis) - ri.getsum(dis - 1) + left[dis] + right[dis] - cntl[dis - left[dis]] - cntr[dis + right[dis]] - 1) {
ans = len;
l = mid + 1;
}
else r = mid - 1;
}
if (ans == -1) {
//cout << left[dis] + right[dis] - cntl[dis - left[dis]] - cntr[dis + right[dis]] - 1 << '\n';
cout << "NO\n";
return;
}
treap.erase(treap.upper_bound({ans, 0}));
if (left[dis] > 1) ri.insert(dis - left[dis] + 1, dis - 1, 1);
if (right[dis] > 1) le.insert(dis + 1, dis + right[dis] - 1, 1);
cntl[dis - left[dis]]++, cntr[dis + right[dis]]++;
}
cout << "YES\n";
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int T = 1;
cin >> T;
while (T--) {
work();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3596kb
input:
3 5 2 3 5 1 3 2 4 5 2 1 2 4 5 5 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 3 2 2 3 1 2 3 2 2 3
output:
YES YES NO
result:
ok 3 lines
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3880kb
input:
100 2 1 2 2 1 2 1 1 2 1 2 1 2 1 2 2 2 1 1 1 2 1 2 6 1 5 3 4 2 5 6 1 3 5 2 1 1 1 6 1 6 2 1 3 6 4 5 1 4 1 2 2 1 4 3 3 2 2 1 3 2 1 3 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 2 1 2 1 2 4 4 3 2 1 3 4 2 1 3 4 4 3 1 1 1 1 1 1 1 6 5 1 6 2 5 4 3 1 6 2 4 3 1 4 1 1 1 1 1 1 6 5 3 3 6 1 4 5 2 3 6 1 4 2 3 3 4 4 3 4 3 4 ...
output:
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES YES NO YES YES YES YES YES YES YES YES YES YES NO NO NO YES YES NO NO YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES YES YES YES YES YES NO YES YES YES YES Y...
result:
wrong answer 58th lines differ - expected: 'NO', found: 'YES'