#include <bits/stdc++.h>
#include "shortcut.h"
using namespace std;
typedef long long ll;
const int N = 3010;
const ll OO = 1e18;
ll pf[N], dst[N], c;
int n, mem_l[N], mem_r[N];
bool ok(ll mx){
bool was = 0;
ll u = -1, d = -1, l = -1, r = -1;
for (int i = 0; i < n - 1; i++)
for (int j = i + 1; j < n; j++)
if (pf[j] - pf[i] + dst[j] + dst[i] > mx){
ll k = mx - dst[i] - dst[j] - c;
if (k < 0) return 0;
ll up = pf[j] + k, down = pf[j] - k;
ll cu = up + pf[i];
ll cd = down + pf[i];
ll cl = pf[i] - (up + pf[i]) / 2;
ll cr = pf[i] - (down + pf[i]) / 2;
if (!was){
was = 1;
u = cu; d = cd; l = cl; r = cr;
} else {
u = min(u, cu);
d = max(d, cd);
if (u < d) return 0;
l = max(l, cl);
r = min(r, cr);
if (r < l) return 0;
}
}
if (!was) return 1;
int l1 = 0, r1 = -1;
int r2 = -1, l2 = 0;
for (int i = n - 1; i >= 0; i--){
while (l1 < n && pf[l1] + pf[i] < d)
l1++;
while (r1 + 1 < n && pf[r1 + 1] + pf[i] <= u)
r1++;
mem_l[i] = l1;
mem_r[i] = r1;
}
for (int i = 0; i < n; i++) {
while (r2 < n - 1 && (pf[i] - pf[r2 + 1]) / 2 >= l)
r2++;
while (l2 < n && (pf[i] - pf[l2]) / 2 > r)
l2++;
int j1 = max(mem_l[i], l2), j2 = min(mem_r[i], r2);
if (j1 > j2) continue;
if (j1 == j2){
if (j1 != i)
return 1;
} else return 1;
}
return 0;
}
long long find_shortcut(int N, std::vector<int> l, std::vector<int> d, int C){
n = N;
c = C * 2;
assert(n <= 3000);
pf[0] = 0;
for (int i = 0; i < n - 1; i++) {
pf[i + 1] = pf[i] + l[i] * 2;
dst[i] = d[i] * 2;
}
dst[n - 1] = d[n - 1] * 2;
// smth smaller
ll l1 = 0, r1 = 13;
while (l1 < r1){
ll md = (l1 + r1) >> 1;
if (ok(md))
r1 = md;
else l1 = md + 1;
}
return l1 / 2;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
n = 4, incorrect answer: jury 80 vs contestant 6 |
2 |
Halted |
0 ms |
0 KB |
- |