#include <bits/stdc++.h>
#include "plants.h"
using namespace std;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define Time (clock() * 1.0 / CLOCKS_PER_SEC)
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
using ld = long double;
template<typename T1, typename T2> bool chkmin(T1& x, T2 y) {
return y < x ? (x = y, true) : false;
}
template<typename T1, typename T2> bool chkmax(T1& x, T2 y) {
return y > x ? (x = y, true) : false;
}
void debug_out() {
cerr << endl;
}
template<typename T1, typename... T2> void debug_out(T1 A, T2... B) {
cerr << ' ' << A;
debug_out(B...);
}
template<typename T> void mdebug_out(T* a, int n) {
for (int i = 0; i < n; ++i)
cerr << a[i] << ' ';
cerr << endl;
}
#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define mdebug(a, n) cerr << #a << ": ", mdebug_out(a, n)
#else
#define debug(...) 1337
#define mdebug(a, n) 1337
#endif
template<typename T> ostream& operator << (ostream& stream, const vector<T>& v) {
for (auto& e : v)
stream << e << ' ';
return stream;
}
template<typename T1, typename T2> ostream& operator << (ostream& stream, const pair<T1, T2>& p) {
return stream << p.first << ' ' << p.second;
}
const int INF32 = 1e9;
const int maxN = 2e5 + 5;
const int logN = 18;
int n, k;
int r[maxN];
int p[maxN];
int L[logN][maxN], LD[logN][maxN], R[logN][maxN], RD[logN][maxN];
int md(int x) {
if ((x %= n) < 0)
x += n;
return x;
}
bool between(int l, int m, int r) {
if (l <= r)
return l <= m && m <= r;
return m >= l || m <= r;
}
int dist(int i, int j) {
return min({j - i, i + n - j, j + n - i});
}
struct sgt {
static const int N = 1 << logN;
int mn[2 * N], lazy[2 * N];
void apply(int v, int d) {
mn[v] += d;
lazy[v] += d;
}
void push(int v) {
if (!lazy[v] || v >= N) return;
apply(v << 1, lazy[v]);
apply(v << 1 | 1, lazy[v]);
lazy[v] = 0;
}
void upd(int v) {
mn[v] = min(mn[v << 1], mn[v << 1 | 1]);
}
void build(int* a) {
memset(mn, 0x3f, sizeof mn);
memset(lazy, 0, sizeof lazy);
for (int i = 0; i < n; ++i)
mn[i + N] = a[i];
for (int v = N - 1; v >= 1; --v)
upd(v);
}
void disable(int v, int vl, int vr, int i) {
if (vl == vr) {
mn[v] = +INF32;
return;
}
int vm = (vl + vr) >> 1;
push(v);
if (i <= vm)
disable(v << 1, vl, vm, i);
else
disable(v << 1 | 1, vm + 1, vr, i);
upd(v);
}
void add(int v, int vl, int vr, int l, int r, int delta) {
if (l > r || vr < l || r < vl) return;
if (l <= vl && vr <= r) {
apply(v, delta);
return;
}
int vm = (vl + vr) >> 1;
push(v);
add(v << 1, vl, vm, l, r, delta);
add(v << 1 | 1, vm + 1, vr, l, r, delta);
upd(v);
}
void add(int l, int r, int delta) {
// cerr << "add " << (this) << ' ' << l << ' ' << r << ' ' << delta << endl;
if (l <= r)
add(1, 0, N - 1, l, r, delta);
else {
add(1, 0, N - 1, 0, r, delta);
add(1, 0, N - 1, l, n - 1, delta);
}
}
int GetFirstLeq(int v, int vl, int vr, int l, int r, int x = 0) {
if (l > r || vr < l || r < vl || mn[v] > x) return -1;
if (vl == vr) return vl;
int vm = (vl + vr) >> 1;
push(v);
int ansL = GetFirstLeq(v << 1, vl, vm, l, r, x);
if (ansL != -1)
return ansL;
return GetFirstLeq(v << 1 | 1, vm + 1, vr, l, r, x);
}
int GetFirstLeq(int l, int r, int x = 0) {
if (l <= r)
return GetFirstLeq(1, 0, N - 1, l, r, x);
else {
int ans = GetFirstLeq(1, 0, N - 1, l, n - 1, x);
if (ans != -1)
return ans;
return GetFirstLeq(1, 0, N - 1, 0, r, x);
}
}
int GetMin(int v, int vl, int vr, int l, int r) {
if (l > r || vr < l || r < vl) return +INF32;
if (l <= vl && vr <= r) return mn[v];
int vm = (vl + vr) >> 1;
push(v);
return min(GetMin(v << 1, vl, vm, l, r), GetMin(v << 1 | 1, vm + 1, vr, l, r));
}
int GetMin(int l, int r) {
if (l <= r)
return GetMin(1, 0, N - 1, l, r);
return min(GetMin(1, 0, N - 1, l, n - 1), GetMin(1, 0, N - 1, 0, r));
}
void mdf(int v, int vl, int vr, int i, int val) {
if (vl == vr) {
mn[v] = val;
return;
}
int vm = (vl + vr) >> 1;
push(v);
if (i <= vm)
mdf(v << 1, vl, vm, i, val);
else
mdf(v << 1 | 1, vm + 1, vr, i, val);
upd(v);
}
int gt(int v, int vl, int vr, int i) {
if (vl == vr) return mn[v];
int vm = (vl + vr) >> 1;
push(v);
if (i <= vm)
return gt(v << 1, vl, vm, i);
else
return gt(v << 1 | 1, vm + 1, vr, i);
}
} sr, sf;
void init(int _k, vector<int> _r) {
n = _r.size(), k = _k;
for (int i = 0; i < n; ++i)
r[i] = _r[i];
sr.build(r);
sf.build(r);
auto travelRZero = [&]() {
for (int i = sr.GetFirstLeq(1, 0, sr.N - 1, 0, n - 1); i != -1; i = sr.GetFirstLeq(1, 0, sr.N - 1, 0, n - 1)) {
sf.add(md(i + 1), md(i + k - 1), +1);
sr.disable(1, 0, sr.N - 1, i);
}
};
travelRZero();
for (int v = 0; v < n; ++v) {
int i = sf.GetFirstLeq(1, 0, sf.N - 1, 0, n - 1);
sf.disable(1, 0, sf.N - 1, i);
sf.add(md(i + 1), md(i + k - 1), -1);
sf.add(md(i - k + 1), md(i - 1), -1);
sr.add(md(i - k + 1), md(i - 1), -1);
travelRZero();
p[i] = v;
}
for (int i = 0; i < n; ++i)
sf.mdf(1, 0, sf.N - 1, i, +INF32);
vector<int> ord(n);
for (int i = 0; i < n; ++i)
ord[p[i]] = i;
memset(L, 255, sizeof L);
memset(R, 255, sizeof R);
reverse(all(ord));
for (int i : ord) {
int minL = sf.GetMin(md(i - k + 1), md(i - 1));
if (minL < INF32 / 2) {
L[0][i] = sf.GetFirstLeq(md(i - k + 1), md(i - 1), minL);
LD[0][i] = md(i - L[0][i]);
}
int minR = sf.GetMin(md(i + 1), md(i + k - 1));
if (minR < INF32 / 2) {
R[0][i] = sf.GetFirstLeq(md(i + 1), md(i + k - 1), minR);
RD[0][i] = md(R[0][i] - i);
}
// debug(L[0][i], i, R[0][i]);
// debug(minL, minR);
sf.mdf(1, 0, sf.N - 1, i, p[i]);
}
for (int j = 1; j < logN; ++j) {
for (int i = 0; i < n; ++i) {
if (L[j - 1][i] != -1) {
int l = L[j - 1][i];
if (LD[j - 1][i] + LD[j - 1][l] < n) {
L[j][i] = L[j - 1][l];
LD[j][i] = LD[j - 1][i] + LD[j - 1][l];
}
}
if (R[j - 1][i] != -1) {
int r = R[j - 1][i];
if (RD[j - 1][i] + RD[j - 1][r] < n) {
R[j][i] = R[j - 1][r];
RD[j][i] = RD[j - 1][i] + RD[j - 1][r];
}
}
}
}
}
bool Less(int x, int y) {
// debug(x, y);
{
int i = x;
int dxy = md(y - x);
for (int j = logN - 1, d = 0; j >= 0; --j)
if (L[j][i] != -1 && d + LD[j][i] < dxy) {
i = L[j][i];
}
i = L[0][i];
if (i != -1 && between(i, y, x) && p[i] <= p[y])
return 1;
}
{
int i = x;
int dxy = md(x - y);
for (int j = logN - 1, d = 0; j >= 0; --j)
if (R[j][i] != -1 && d + RD[j][i] < dxy)
i = R[j][i];
i = R[0][i];
if (i != -1 && between(x, y, i) && p[i] <= p[y])
return 1;
}
// exit(0);
return 0;
}
int compare_plants_stu(int x, int y) {
if (p[x] < p[y]) return 1;
return -1;
}
int compare_plants(int x, int y) {
if (Less(x, y))
return 1;
if (Less(y, x))
return -1;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
20 ms |
36676 KB |
Output is correct |
| 2 |
Incorrect |
22 ms |
36644 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
36680 KB |
Output is correct |
| 2 |
Incorrect |
20 ms |
36628 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
36680 KB |
Output is correct |
| 2 |
Incorrect |
20 ms |
36628 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
18 ms |
36684 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
22 ms |
36684 KB |
Output is correct |
| 2 |
Incorrect |
19 ms |
36688 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
19 ms |
36612 KB |
Output is correct |
| 2 |
Incorrect |
19 ms |
36688 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
20 ms |
36676 KB |
Output is correct |
| 2 |
Incorrect |
22 ms |
36644 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
