| 4978 | 2023-04-08 12:15:04 | zsombor | Mágikus intervallum | cpp17 | Wrong answer 15/100 | 197ms | 11628 KiB |
#include <iostream>
#include <vector>
using namespace std;
using ll = long long;
int n, ansl = 1, ansr = 0;
vector <ll> a(15e4 + 2, 0);
vector <ll> p(15e4 + 2, 0);
vector <ll> v(15e4 + 2, 0);
ll sum(int l, int r) {
return p[r] - p[l - 1];
}
void get_ans(int l, int r) {
if (r - l > ansr - ansl) { ansl = l; ansr = r; }
if (r - l == ansr - ansl && l < ansl) { ansl = l; ansr = r; }
}
void solve(int l, int r) {
if (r < l) return;
int m = (l + r) / 2, L, R, M;
ll mx;
v[l] = sum(l, m - 1);
for (int i = l + 1; i <= m; i++) v[i] = min(v[i - 1], sum(i, m - 1));
v[m + 1] = -1e15;
mx = -1e15;
for (int i = m; i <= r; i++) {
mx = max(mx, a[i]);
L = l - 1; R = m + 1;
while (R - L > 1) {
M = (L + R) / 2;
(v[M] + sum(m, i) <= 2 * mx ? R = M : L = M);
}
if (R < m + 1) get_ans(R, i);
}
v[r] = sum(m + 1, r);
for (int i = r - 1; i >= m; i--) v[i] = min(v[i + 1], sum(m + 1, r));
v[m - 1] = -1e15;
mx = -1e15;
for (int i = m; i >= l; i--) {
mx = max(mx, a[i]);
L = m - 1; R = r + 1;
while (R - L > 1) {
M = (L + R) / 2;
(v[M] + sum(i, m) <= 2 * mx ? L = M : R = M);
}
if (L > m - 1) get_ans(i, L);
}
solve(l, m - 1);
solve(m + 1, r);
}
int main()
{
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
p[i] = p[i - 1] + a[i];
}
solve(1, n);
cout << ansl << " " << ansr;
}| Subtask | Sum | Test | Verdict | Time | Memory | ||
|---|---|---|---|---|---|---|---|
| subtask1 | 0/0 | ||||||
| 1 | Accepted | 4ms | 8816 KiB | ||||
| 2 | Accepted | 152ms | 9108 KiB | ||||
| subtask2 | 0/5 | ||||||
| 3 | Accepted | 4ms | 9684 KiB | ||||
| 4 | Wrong answer | 4ms | 9836 KiB | ||||
| 5 | Accepted | 4ms | 10044 KiB | ||||
| 6 | Wrong answer | 4ms | 10140 KiB | ||||
| 7 | Accepted | 6ms | 10244 KiB | ||||
| 8 | Wrong answer | 6ms | 10456 KiB | ||||
| subtask3 | 0/10 | ||||||
| 9 | Accepted | 4ms | 10536 KiB | ||||
| 10 | Wrong answer | 4ms | 10680 KiB | ||||
| 11 | Accepted | 6ms | 10968 KiB | ||||
| 12 | Accepted | 4ms | 10924 KiB | ||||
| 13 | Accepted | 6ms | 10880 KiB | ||||
| 14 | Wrong answer | 6ms | 10880 KiB | ||||
| subtask4 | 0/10 | ||||||
| 15 | Accepted | 4ms | 10844 KiB | ||||
| 16 | Accepted | 4ms | 11096 KiB | ||||
| 17 | Accepted | 6ms | 11040 KiB | ||||
| 18 | Wrong answer | 13ms | 11040 KiB | ||||
| 19 | Wrong answer | 178ms | 11332 KiB | ||||
| 20 | Accepted | 149ms | 11284 KiB | ||||
| 21 | Wrong answer | 149ms | 11304 KiB | ||||
| subtask5 | 15/15 | ||||||
| 22 | Accepted | 4ms | 11304 KiB | ||||
| 23 | Accepted | 138ms | 11292 KiB | ||||
| 24 | Accepted | 160ms | 11296 KiB | ||||
| subtask6 | 0/60 | ||||||
| 25 | Accepted | 164ms | 11164 KiB | ||||
| 26 | Accepted | 181ms | 11196 KiB | ||||
| 27 | Accepted | 180ms | 11240 KiB | ||||
| 28 | Accepted | 177ms | 11228 KiB | ||||
| 29 | Accepted | 173ms | 11496 KiB | ||||
| 30 | Accepted | 172ms | 11408 KiB | ||||
| 31 | Accepted | 197ms | 11372 KiB | ||||
| 32 | Accepted | 195ms | 11372 KiB | ||||
| 33 | Accepted | 151ms | 11416 KiB | ||||
| 34 | Accepted | 150ms | 11412 KiB | ||||
| 35 | Wrong answer | 150ms | 11380 KiB | ||||
| 36 | Wrong answer | 179ms | 11420 KiB | ||||
| 37 | Accepted | 143ms | 11420 KiB | ||||
| 38 | Wrong answer | 148ms | 11452 KiB | ||||
| 39 | Wrong answer | 6ms | 11628 KiB | ||||