#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
#include "shortcut.h"
using namespace std;
using ll = long long;
constexpr int N = 3001;
int cant[N][N], mx_pref[N][N], mx_suf[N][N];
int sz[N], nxt[N][N];
ll pref[N];
ll dist(int i, int j) {
if (i > j) swap(i, j);
return pref[j] - pref[i];
}
ll find_shortcut(int n, vector<int> l, vector<int> d, int c) {
pref[0] = 0;
for (int i = 0; i < n - 1; ++i) {
pref[i + 1] = pref[i] + l[i];
}
ll high = 0;
for (int i = 0; i < n; ++i) {
for (int j = i + 1; j < n; ++j) {
high = max(high, dist(i, j) + d[i] + d[j]);
}
}
ll low = 0;
while (low + 1 < high) {
ll mid = (low + high) >> 1;
auto check = [&]() -> bool {
vector<int> prefix;
for (int i = 0; i < n; ++i) {
sz[i] = 0;
for (int j = 0; j < n; ++j) {
if (i != j && dist(i, j) + d[i] + d[j] > mid) {
cant[i][sz[i]++] = j;
}
}
if (sz[i]) {
if (cant[i][0] < i && cant[i][sz[i] - 1] > i) {
return false;
}
if (cant[i][0] > i) {
fill(nxt[i], nxt[i] + n + 1, sz[i]);
for (int j = 0; j < sz[i]; ++j) {
nxt[i][cant[i][j]] = j;
}
for (int j = n - 1; j > -1; --j) {
if (nxt[i][j] == sz[i]) {
nxt[i][j] = nxt[i][j + 1];
}
}
prefix.push_back(i);
for (int j = 0; j < sz[i]; ++j) {
if (j == 0 || d[cant[i][j]] > dist(cant[i][j], mx_pref[i][j - 1]) + d[mx_pref[i][j - 1]]) {
mx_pref[i][j] = cant[i][j];
} else {
mx_pref[i][j] = mx_pref[i][j - 1];
}
}
for (int j = sz[i] - 1; j > -1; --j) {
if (j == sz[i] - 1 ||
d[cant[i][j]] > dist(cant[i][j], mx_suf[i][j + 1]) + d[mx_suf[i][j + 1]]) {
mx_suf[i][j] = cant[i][j];
} else {
mx_suf[i][j] = mx_suf[i][j + 1];
}
}
}
}
}
for (int p = 0; p < n; ++p) {
int L = 0, R = n;
for (int i: prefix) {
ll D = dist(p, i) + d[i];
int l = -1, r = cant[i][sz[i] - 1];
while (l + 1 < r) {
int m = (l + r) >> 1;
auto it = nxt[i][m];
if (D + c + dist(m, mx_suf[i][it]) + d[mx_suf[i][it]] <= mid) {
r = m;
} else {
l = m;
}
}
L = max(L, r);
l = cant[i][0], r = n;
while (l + 1 < r) {
int m = (l + r) >> 1;
auto it = nxt[i][m + 1];
if (it == 0 || D + c + dist(m, mx_pref[i][it - 1]) + d[mx_pref[i][it - 1]] <= mid) {
l = m;
} else {
r = m;
}
}
R = min(R, r);
if (L >= R) {
break;
}
}
if (L < R) {
return true;
}
}
return false;
};
if (check()) {
high = mid;
} else {
low = mid;
}
}
return high;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
n = 4, incorrect answer: jury 80 vs contestant 60 |
2 |
Halted |
0 ms |
0 KB |
- |