#include "longesttrip.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count());
using i64 = long long;
vector<int> longest_trip(int N, int D) {
int n = N;
auto ask = [&](int x, int y) -> bool {
return are_connected(vector<int>{x}, vector<int>{y});
};
vector<int> nodes(n);
iota(nodes.begin(), nodes.end(), 0);
random_shuffle(nodes.begin(), nodes.end());
bool edge = 0;
vector<int> a{nodes[0]}, b;
for (int z = 1; z < n; ++z) {
int i = nodes[z];
if (edge == 0) {
if (ask(a.back(), i)) {
a.push_back(i);
edge = 1;
} else {
b.push_back(i);
edge = 0;
}
} else {
if (ask(a.back(), i)) {
a.push_back(i);
} else {
if (b.size() == 0 || ask(b.back(), i)) {
b.push_back(i);
edge = 0;
} else {
reverse(b.begin(), b.end());
for (auto j : b) {
a.push_back(j);
}
b.clear();
b.push_back(i);
}
}
}
}
if (b.size() && are_connected(a, b)) {
if (are_connected(vector<int>{a.back()}, vector<int>(b.begin(), b.end())) == 0) {
int l = 1, r = b.size();
while (l <= r) {
int mid = (l + r) / 2;
if (are_connected(a, vector<int>(b.begin(), b.begin() + mid))) {
r = mid - 1;
} else {
l = mid + 1;
}
}
++r;
swap(b[r - 1], b.back());
swap(a, b);
}
if (ask(a.back(), b.back())) {
reverse(b.begin(), b.end());
}
int l = 1, r = b.size();
while (l <= r) {
int mid = (l + r) / 2;
if (are_connected(vector<int>{a.back()}, vector<int>(b.begin(), b.begin() + mid))) {
r = mid - 1;
} else {
l = mid + 1;
}
}
--l;
while (l--) {
b.push_back(b[0]);
b.erase(b.begin());
}
for (auto j : b) {
a.push_back(j);
}
b.clear();
} else {
if (a.size() < b.size()) {
swap(a, b);
}
}
return a;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
2 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
344 KB |
Output is correct |
| 2 |
Correct |
6 ms |
344 KB |
Output is correct |
| 3 |
Correct |
7 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
6 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
344 KB |
Output is correct |
| 2 |
Correct |
5 ms |
344 KB |
Output is correct |
| 3 |
Correct |
5 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
344 KB |
Output is correct |
| 6 |
Correct |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
10 ms |
344 KB |
Output is correct |
| 8 |
Correct |
5 ms |
344 KB |
Output is correct |
| 9 |
Correct |
6 ms |
344 KB |
Output is correct |
| 10 |
Correct |
5 ms |
596 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
7 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
344 KB |
Output is correct |
| 2 |
Correct |
7 ms |
344 KB |
Output is correct |
| 3 |
Correct |
5 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
7 ms |
344 KB |
Output is correct |
| 6 |
Correct |
8 ms |
344 KB |
Output is correct |
| 7 |
Correct |
8 ms |
344 KB |
Output is correct |
| 8 |
Correct |
5 ms |
344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
344 KB |
Output is correct |
| 10 |
Correct |
5 ms |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 KB |
Output is correct |
| 14 |
Correct |
7 ms |
344 KB |
Output is correct |
| 15 |
Correct |
5 ms |
344 KB |
Output is correct |
| 16 |
Correct |
7 ms |
344 KB |
Output is correct |
| 17 |
Correct |
6 ms |
344 KB |
Output is correct |
| 18 |
Correct |
9 ms |
344 KB |
Output is correct |
| 19 |
Correct |
6 ms |
344 KB |
Output is correct |
| 20 |
Correct |
6 ms |
344 KB |
Output is correct |
| 21 |
Correct |
5 ms |
444 KB |
Output is correct |
| 22 |
Correct |
6 ms |
344 KB |
Output is correct |
| 23 |
Correct |
6 ms |
344 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
6 ms |
344 KB |
Output is correct |
| 26 |
Correct |
6 ms |
344 KB |
Output is correct |
| 27 |
Correct |
5 ms |
344 KB |
Output is correct |
| 28 |
Correct |
7 ms |
344 KB |
Output is correct |
| 29 |
Correct |
5 ms |
344 KB |
Output is correct |
| 30 |
Correct |
6 ms |
344 KB |
Output is correct |
| 31 |
Correct |
6 ms |
344 KB |
Output is correct |
| 32 |
Correct |
8 ms |
344 KB |
Output is correct |
| 33 |
Correct |
7 ms |
344 KB |
Output is correct |
| 34 |
Correct |
5 ms |
436 KB |
Output is correct |
| 35 |
Correct |
4 ms |
340 KB |
Output is correct |
| 36 |
Correct |
5 ms |
344 KB |
Output is correct |
| 37 |
Correct |
5 ms |
344 KB |
Output is correct |
| 38 |
Correct |
6 ms |
344 KB |
Output is correct |
| 39 |
Correct |
6 ms |
344 KB |
Output is correct |
| 40 |
Correct |
6 ms |
344 KB |
Output is correct |
| 41 |
Correct |
7 ms |
344 KB |
Output is correct |
| 42 |
Correct |
6 ms |
344 KB |
Output is correct |
| 43 |
Correct |
6 ms |
344 KB |
Output is correct |
| 44 |
Correct |
7 ms |
344 KB |
Output is correct |
| 45 |
Correct |
11 ms |
344 KB |
Output is correct |
| 46 |
Correct |
11 ms |
344 KB |
Output is correct |
| 47 |
Correct |
9 ms |
344 KB |
Output is correct |
| 48 |
Correct |
8 ms |
344 KB |
Output is correct |
| 49 |
Correct |
8 ms |
344 KB |
Output is correct |
| 50 |
Correct |
6 ms |
344 KB |
Output is correct |
| 51 |
Correct |
7 ms |
440 KB |
Output is correct |
| 52 |
Correct |
7 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
344 KB |
Output is correct |
| 54 |
Correct |
6 ms |
436 KB |
Output is correct |
| 55 |
Correct |
10 ms |
344 KB |
Output is correct |
| 56 |
Correct |
6 ms |
692 KB |
Output is correct |
| 57 |
Correct |
6 ms |
344 KB |
Output is correct |
| 58 |
Correct |
6 ms |
444 KB |
Output is correct |
| 59 |
Correct |
6 ms |
600 KB |
Output is correct |
| 60 |
Correct |
7 ms |
344 KB |
Output is correct |
| 61 |
Correct |
7 ms |
344 KB |
Output is correct |
| 62 |
Correct |
7 ms |
448 KB |
Output is correct |
| 63 |
Correct |
9 ms |
340 KB |
Output is correct |
| 64 |
Correct |
11 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
344 KB |
Output is correct |
| 2 |
Correct |
5 ms |
424 KB |
Output is correct |
| 3 |
Correct |
5 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
4 ms |
344 KB |
Output is correct |
| 6 |
Correct |
12 ms |
344 KB |
Output is correct |
| 7 |
Correct |
7 ms |
344 KB |
Output is correct |
| 8 |
Correct |
5 ms |
344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
344 KB |
Output is correct |
| 10 |
Correct |
5 ms |
344 KB |
Output is correct |
| 11 |
Correct |
4 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
7 ms |
344 KB |
Output is correct |
| 14 |
Correct |
9 ms |
344 KB |
Output is correct |
| 15 |
Correct |
7 ms |
344 KB |
Output is correct |
| 16 |
Correct |
8 ms |
344 KB |
Output is correct |
| 17 |
Correct |
6 ms |
344 KB |
Output is correct |
| 18 |
Correct |
7 ms |
344 KB |
Output is correct |
| 19 |
Correct |
5 ms |
344 KB |
Output is correct |
| 20 |
Correct |
4 ms |
344 KB |
Output is correct |
| 21 |
Correct |
9 ms |
344 KB |
Output is correct |
| 22 |
Correct |
7 ms |
344 KB |
Output is correct |
| 23 |
Correct |
8 ms |
344 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
5 ms |
344 KB |
Output is correct |
| 26 |
Correct |
5 ms |
344 KB |
Output is correct |
| 27 |
Correct |
4 ms |
344 KB |
Output is correct |
| 28 |
Correct |
7 ms |
344 KB |
Output is correct |
| 29 |
Correct |
5 ms |
344 KB |
Output is correct |
| 30 |
Correct |
5 ms |
436 KB |
Output is correct |
| 31 |
Correct |
5 ms |
344 KB |
Output is correct |
| 32 |
Correct |
13 ms |
344 KB |
Output is correct |
| 33 |
Correct |
16 ms |
344 KB |
Output is correct |
| 34 |
Correct |
7 ms |
344 KB |
Output is correct |
| 35 |
Correct |
8 ms |
344 KB |
Output is correct |
| 36 |
Correct |
9 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
344 KB |
Output is correct |
| 38 |
Correct |
9 ms |
344 KB |
Output is correct |
| 39 |
Correct |
10 ms |
600 KB |
Output is correct |
| 40 |
Correct |
6 ms |
344 KB |
Output is correct |
| 41 |
Correct |
6 ms |
344 KB |
Output is correct |
| 42 |
Correct |
8 ms |
344 KB |
Output is correct |
| 43 |
Correct |
5 ms |
344 KB |
Output is correct |
| 44 |
Correct |
6 ms |
344 KB |
Output is correct |
| 45 |
Correct |
5 ms |
344 KB |
Output is correct |
| 46 |
Correct |
5 ms |
344 KB |
Output is correct |
| 47 |
Correct |
4 ms |
344 KB |
Output is correct |
| 48 |
Correct |
5 ms |
344 KB |
Output is correct |
| 49 |
Correct |
6 ms |
344 KB |
Output is correct |
| 50 |
Correct |
8 ms |
344 KB |
Output is correct |
| 51 |
Correct |
6 ms |
344 KB |
Output is correct |
| 52 |
Correct |
7 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
344 KB |
Output is correct |
| 54 |
Correct |
5 ms |
344 KB |
Output is correct |
| 55 |
Correct |
5 ms |
344 KB |
Output is correct |
| 56 |
Correct |
5 ms |
344 KB |
Output is correct |
| 57 |
Correct |
7 ms |
344 KB |
Output is correct |
| 58 |
Correct |
6 ms |
344 KB |
Output is correct |
| 59 |
Correct |
7 ms |
344 KB |
Output is correct |
| 60 |
Correct |
8 ms |
344 KB |
Output is correct |
| 61 |
Correct |
7 ms |
344 KB |
Output is correct |
| 62 |
Correct |
5 ms |
600 KB |
Output is correct |
| 63 |
Correct |
7 ms |
436 KB |
Output is correct |
| 64 |
Correct |
8 ms |
344 KB |
Output is correct |
| 65 |
Correct |
8 ms |
436 KB |
Output is correct |
| 66 |
Correct |
7 ms |
344 KB |
Output is correct |
| 67 |
Correct |
6 ms |
344 KB |
Output is correct |
| 68 |
Correct |
10 ms |
344 KB |
Output is correct |
| 69 |
Correct |
7 ms |
440 KB |
Output is correct |
| 70 |
Correct |
7 ms |
344 KB |
Output is correct |
| 71 |
Correct |
6 ms |
436 KB |
Output is correct |
| 72 |
Correct |
6 ms |
344 KB |
Output is correct |
| 73 |
Correct |
9 ms |
344 KB |
Output is correct |
| 74 |
Correct |
8 ms |
344 KB |
Output is correct |
| 75 |
Correct |
6 ms |
452 KB |
Output is correct |
| 76 |
Correct |
6 ms |
344 KB |
Output is correct |
| 77 |
Correct |
5 ms |
344 KB |
Output is correct |
| 78 |
Correct |
6 ms |
344 KB |
Output is correct |
| 79 |
Correct |
10 ms |
600 KB |
Output is correct |
| 80 |
Correct |
7 ms |
344 KB |
Output is correct |
| 81 |
Correct |
7 ms |
344 KB |
Output is correct |
| 82 |
Correct |
8 ms |
600 KB |
Output is correct |
