// while (clock()<=69*CLOCKS_PER_SEC)
// #pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
// #pragma GCC target ("avx2")
// #pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set =
tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define sim template <class c
#define ris return *this
#define dor > debug &operator<<
#define eni(x) \
sim > typename enable_if<sizeof dud<c>(0) x 1, debug &>::type operator<<(c i) \
{
sim > struct rge {
c b, e;
};
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c *x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef XOX
~debug()
{
cerr << endl;
}
eni(!=) cerr << boolalpha << i;
ris;
} eni(==) ris << range(begin(i), end(i));
}
sim, class b dor(pair<b, c> d)
{
ris << "" << d.first << " --> " << d.second << "";
}
sim dor(rge<c> d)
{
*this << "[";
for (auto it = d.b; it != d.e; ++it)
*this << ", " + 2 * (it == d.b) << *it;
ris << "]";
}
#else
sim dor(const c &)
{
ris;
}
#endif
}
;
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#ifdef XOX
#warning Times may differ!!!
#endif
#define endl '\n'
#define pb emplace_back
#define vt vector
#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
const int nax = 1000 * 1007, mod = 1e9 + 7;
const int tsz = 1 << 17, oo = 2e9 + 1237;
int n;
#define lc 2 * v
#define rc 2 * v + 1
#define m (l + r) / 2
struct TreeMax {
int t[2 * tsz];
void update(int pos, int to, int v = 1, int l = 1, int r = n)
{
if (l == r) {
t[v] = to;
return;
}
if (pos <= m) {
update(pos, to, lc, l, m);
}
else {
update(pos, to, rc, m + 1, r);
}
t[v] = max(t[lc], t[rc]);
}
int toRight(int ql, int qr, int big, int v = 1, int l = 1, int r = n)
{
if (ql > qr || t[v] < big) {
return -oo;
}
if (ql == l && qr == r) {
while (l != r) {
if (t[rc] >= big) {
v = rc;
l = m + 1;
}
else {
v = lc;
r = m;
}
}
return l;
}
return max(toRight(ql, min(qr, m), big, lc, l, m),
toRight(max(m + 1, ql), qr, big, rc, m + 1, r));
}
int toLeft(int ql, int qr, int big, int v = 1, int l = 1, int r = n)
{
if (ql > qr || t[v] < big) {
return oo;
}
if (ql == l && qr == r) {
while (l != r) {
if (t[lc] >= big) {
v = lc;
r = m;
}
else {
v = rc;
l = m + 1;
}
}
return l;
}
return min(toLeft(ql, min(qr, m), big, lc, l, m),
toLeft(max(m + 1, ql), qr, big, rc, m + 1, r));
}
};
struct TreeSum {
ll t[2 * tsz];
void update(int pos, int to, int v = 1, int l = 1, int r = n)
{
if (l == r) {
t[v] = to;
return;
}
if (pos <= m) {
update(pos, to, lc, l, m);
}
else {
update(pos, to, rc, m + 1, r);
}
t[v] = t[lc] + t[rc];
}
ll query(int ql, int qr, int v = 1, int l = 1, int r = n)
{
if (ql > qr) {
return 0;
}
if (ql == l && qr == r) {
return t[v];
}
return query(ql, min(qr, m), lc, l, m) +
query(max(m + 1, ql), qr, rc, m + 1, r);
}
};
struct TreeCMin {
pii lacz(const pii &a, const pii &b)
{
if (a.first == b.first) return pii{a.first, a.second + b.second};
return min(a, b);
}
pii t[2 * tsz];
int offset[2 * tsz];
void push(int v)
{
for (auto to : {lc, rc}) {
offset[to] += offset[v];
t[to].first += offset[v];
}
offset[v] = 0;
}
void build(int v = 1, int l = 1, int r = n)
{
if (l == r) {
t[v] = pii{0, 1};
return;
}
build(lc, l, m);
build(rc, m + 1, r);
t[v] = lacz(t[lc], t[rc]);
}
void update(int ql, int qr, int ile, int v = 1, int l = 1, int r = n)
{
if (l != r) {
push(v);
}
if (ql > qr) {
return;
}
if (ql == l && r == qr) {
t[v].first += ile;
offset[v] += ile;
return;
}
update(ql, min(m, qr), ile, lc, l, m);
update(max(m + 1, ql), qr, ile, rc, m + 1, r);
t[v] = lacz(t[lc], t[rc]);
}
pii query(int ql, int qr, int v = 1, int l = 1, int r = n)
{
if (l != r) {
push(v);
}
if (ql > qr) {
return pii{oo, oo};
}
if (ql == l && qr == r) {
return t[v];
}
return lacz(query(ql, min(qr, m), lc, l, m),
query(max(m + 1, ql), qr, rc, m + 1, r));
}
};
int32_t main()
{
cin.tie(0)->sync_with_stdio(0);
cin >> n;
vt<int> a(n + 2);
set<pii> active;
TreeMax one;
TreeSum two;
TreeCMin three;
auto gitcheck = [&](int l, int r) {
if (!(1 <= l && l <= r && r <= n)) {
return false;
}
return two.query(l, r) < min(a[l - 1], a[r + 1]);
};
auto nextRight = [&](int l, int r) {
int sum = two.query(l, r);
return one.toLeft(r + 1, n, sum);
};
auto nextLeft = [&](int l, int r) {
int sum = two.query(l, r);
return one.toRight(1, l - 1, sum);
};
auto maybe = [&](int l, int r, int x) {
if (x == +1) {
if (!active.count({l, r})) {
active.emplace(l, r);
debug() << imie(l) imie(r) imie(x);
three.update(l, r, x);
}
}
else {
if (active.count({l, r})) {
active.erase({l, r});
debug() << imie(l) imie(r) imie(x);
three.update(l, r, x);
}
}
};
auto both = [&](int pos, int x) {
int l = pos, r = pos;
while (1 <= l && r <= n) {
if (gitcheck(l, r)) {
maybe(l, r, x);
}
if (a[l - 1] < a[r + 1]) {
l = nextLeft(l, r);
if (gitcheck(l + 1, r)) {
maybe(l + 1, r, x);
if (nextLeft(l + 1, r) != l) {
l++;
}
}
}
else {
r = nextRight(l, r);
if (gitcheck(l, r - 1)) {
maybe(l, r - 1, x);
if (nextRight(l, r - 1) != r) {
r--;
}
}
}
}
};
auto liczpre = [&](int pos, int x) {
{
int l = pos, r = pos;
while (1 <= l && r <= n) {
if (gitcheck(l, r)) {
maybe(l, r, x);
}
r = nextRight(l, r);
if (gitcheck(l, r - 1)) {
maybe(l, r - 1, x);
}
}
}
{
int l = pos, r = pos;
while (1 <= l && r <= n) {
if (gitcheck(l, r)) {
maybe(l, r, x);
}
l = nextLeft(l, r);
if (gitcheck(l + 1, r)) {
maybe(l + 1, r, x);
}
}
}
if (gitcheck(pos + 1, n)) {
maybe(pos + 1, n, x);
}
if (gitcheck(1, pos - 1)) {
maybe(1, pos - 1, x);
}
if (gitcheck(pos, n)) {
maybe(pos, n, x);
}
if (gitcheck(1, pos)) {
maybe(1, pos, x);
}
};
a[0] = a[n + 1] = oo;
for (int i = 1; i <= n; i++) {
cin >> a[i];
one.update(i, a[i]);
two.update(i, a[i]);
}
three.build();
for (int i = 1; i <= n; i++) {
both(i, +1);
liczpre(i, +1);
}
int q;
cin >> q;
while (q--) {
debug() << imie(a) imie(active);
int type, pos, to;
cin >> type >> pos >> to;
if (type == 1) {
both(pos, -1);
liczpre(pos, -1);
liczpre(pos + 1, -1);
liczpre(pos + 1, -1);
liczpre(pos - 1, -1);
a[pos] = to;
one.update(pos, a[pos]);
two.update(pos, a[pos]);
both(pos, +1);
liczpre(pos, +1);
liczpre(pos + 1, +1);
liczpre(pos - 1, +1);
}
else {
int l = pos, r = to;
int pre = pos;
int rpre = l, rsuf = r;
{
while (pre <= r) {
if (two.query(l, pre - 1) < a[pre]) {
rpre = pre;
}
pre = nextRight(l, pre);
}
}
int suf = to;
{
while (suf >= l) {
if (two.query(suf + 1, r) < a[suf]) {
rsuf = suf;
}
suf = nextLeft(suf, r);
}
}
debug() << imie(rpre) imie(rsuf);
cout << three.query(rpre, rsuf).second << endl;
}
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 3 |
Correct |
3 ms |
6352 KB |
Output is correct |
| 4 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 5 |
Incorrect |
76 ms |
6492 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Execution timed out |
4057 ms |
10660 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 3 |
Correct |
3 ms |
6352 KB |
Output is correct |
| 4 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 5 |
Incorrect |
76 ms |
6492 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Execution timed out |
4057 ms |
10660 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Execution timed out |
4057 ms |
10660 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 2 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 3 |
Correct |
3 ms |
6352 KB |
Output is correct |
| 4 |
Correct |
3 ms |
6356 KB |
Output is correct |
| 5 |
Incorrect |
76 ms |
6492 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
