#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> longest_trip(int n, int d)
{
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
vector<int> c[2];
c[0] = {0};
for (int i = 1; i < n; i++)
if (empty(c[1]))
{
int x = c[0].back();
if (are_connected({i}, {x})) c[0].push_back(i);
else c[1].push_back(i);
}
else
{
int u = rng() % 2;
int x = c[u].back(), y = c[u ^ 1].back();
if (are_connected({i}, {x})) c[u].push_back(i);
else if (are_connected({i}, {y})) c[u ^ 1].push_back(i);
else
{
while (!empty(c[u ^ 1]))
{
c[u].push_back(c[u ^ 1].back());
c[u ^ 1].pop_back();
}
c[u ^ 1].push_back(i);
}
}
if (size(c[1]) > size(c[0]))
swap(c[0], c[1]);
if (empty(c[1]))
return c[0];
if (!are_connected(c[0], c[1]))
return c[0];
for (int u : {0, 1})
{
int v = u ^ 1;
int x = c[v][0];
if (are_connected({x}, {c[u][0]}))
{
reverse(begin(c[u]), end(c[u]));
for (int y : c[v])
c[u].push_back(y);
return c[u];
}
if (are_connected({x}, {c[u].back()}))
{
for (int y : c[v])
c[u].push_back(y);
return c[u];
}
}
// both c[0] and c[1] are cycles
int low = 0, high = size(c[0]);
while (high - low > 1)
{
int mid = (low + high) / 2;
if (are_connected(vector<int>(begin(c[0]) + low, begin(c[0]) + mid), c[1])) high = mid;
else low = mid;
}
int id0 = low;
low = 0, high = size(c[1]);
while (high - low > 1)
{
int mid = (low + high) / 2;
if (are_connected(vector<int>(begin(c[1]) + low, begin(c[1]) + mid), {c[0][id0]})) high = mid;
else low = mid;
}
int id1 = low;
if (id0 < size(c[0]) - 1)
rotate(begin(c[0]), begin(c[0]) + (id0 + 1), end(c[0]));
rotate(begin(c[1]), begin(c[1]) + id1, end(c[1]));
for (int i : c[1])
c[0].push_back(i);
return c[0];
}
Compilation message
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:83:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
83 | if (id0 < size(c[0]) - 1)
| ~~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
344 KB |
Output is correct |
| 2 |
Correct |
4 ms |
344 KB |
Output is correct |
| 3 |
Correct |
5 ms |
340 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
Correct |
4 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 |
4 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
4 ms |
600 KB |
Output is correct |
| 6 |
Correct |
8 ms |
344 KB |
Output is correct |
| 7 |
Correct |
7 ms |
344 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
4 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 |
6 ms |
604 KB |
Output is correct |
| 13 |
Correct |
5 ms |
440 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
344 KB |
Output is correct |
| 2 |
Correct |
6 ms |
344 KB |
Output is correct |
| 3 |
Correct |
4 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
440 KB |
Output is correct |
| 6 |
Correct |
8 ms |
344 KB |
Output is correct |
| 7 |
Correct |
7 ms |
344 KB |
Output is correct |
| 8 |
Correct |
5 ms |
600 KB |
Output is correct |
| 9 |
Correct |
4 ms |
432 KB |
Output is correct |
| 10 |
Correct |
5 ms |
600 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
440 KB |
Output is correct |
| 13 |
Correct |
4 ms |
440 KB |
Output is correct |
| 14 |
Correct |
8 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 |
352 KB |
Output is correct |
| 18 |
Correct |
5 ms |
600 KB |
Output is correct |
| 19 |
Correct |
5 ms |
344 KB |
Output is correct |
| 20 |
Correct |
5 ms |
600 KB |
Output is correct |
| 21 |
Correct |
5 ms |
440 KB |
Output is correct |
| 22 |
Correct |
5 ms |
444 KB |
Output is correct |
| 23 |
Correct |
6 ms |
444 KB |
Output is correct |
| 24 |
Correct |
5 ms |
600 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
10 ms |
344 KB |
Output is correct |
| 27 |
Correct |
6 ms |
344 KB |
Output is correct |
| 28 |
Correct |
7 ms |
344 KB |
Output is correct |
| 29 |
Correct |
7 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 |
7 ms |
344 KB |
Output is correct |
| 33 |
Correct |
6 ms |
344 KB |
Output is correct |
| 34 |
Correct |
6 ms |
344 KB |
Output is correct |
| 35 |
Correct |
7 ms |
344 KB |
Output is correct |
| 36 |
Correct |
5 ms |
600 KB |
Output is correct |
| 37 |
Correct |
8 ms |
600 KB |
Output is correct |
| 38 |
Correct |
7 ms |
344 KB |
Output is correct |
| 39 |
Correct |
6 ms |
600 KB |
Output is correct |
| 40 |
Correct |
6 ms |
608 KB |
Output is correct |
| 41 |
Correct |
6 ms |
344 KB |
Output is correct |
| 42 |
Correct |
6 ms |
344 KB |
Output is correct |
| 43 |
Correct |
8 ms |
600 KB |
Output is correct |
| 44 |
Correct |
6 ms |
344 KB |
Output is correct |
| 45 |
Correct |
9 ms |
344 KB |
Output is correct |
| 46 |
Correct |
13 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 |
12 ms |
344 KB |
Output is correct |
| 50 |
Correct |
6 ms |
432 KB |
Output is correct |
| 51 |
Correct |
8 ms |
596 KB |
Output is correct |
| 52 |
Correct |
7 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
352 KB |
Output is correct |
| 54 |
Correct |
7 ms |
356 KB |
Output is correct |
| 55 |
Correct |
6 ms |
344 KB |
Output is correct |
| 56 |
Correct |
6 ms |
344 KB |
Output is correct |
| 57 |
Correct |
7 ms |
344 KB |
Output is correct |
| 58 |
Correct |
7 ms |
344 KB |
Output is correct |
| 59 |
Correct |
8 ms |
600 KB |
Output is correct |
| 60 |
Correct |
8 ms |
436 KB |
Output is correct |
| 61 |
Correct |
7 ms |
440 KB |
Output is correct |
| 62 |
Correct |
7 ms |
612 KB |
Output is correct |
| 63 |
Correct |
6 ms |
600 KB |
Output is correct |
| 64 |
Correct |
7 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
344 KB |
Output is correct |
| 2 |
Correct |
4 ms |
344 KB |
Output is correct |
| 3 |
Correct |
4 ms |
344 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
344 KB |
Output is correct |
| 6 |
Correct |
8 ms |
344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
344 KB |
Output is correct |
| 8 |
Correct |
4 ms |
436 KB |
Output is correct |
| 9 |
Correct |
4 ms |
600 KB |
Output is correct |
| 10 |
Correct |
5 ms |
380 KB |
Output is correct |
| 11 |
Correct |
4 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
604 KB |
Output is correct |
| 13 |
Correct |
5 ms |
436 KB |
Output is correct |
| 14 |
Correct |
8 ms |
420 KB |
Output is correct |
| 15 |
Correct |
11 ms |
344 KB |
Output is correct |
| 16 |
Correct |
8 ms |
344 KB |
Output is correct |
| 17 |
Correct |
5 ms |
344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
436 KB |
Output is correct |
| 19 |
Correct |
5 ms |
440 KB |
Output is correct |
| 20 |
Correct |
6 ms |
600 KB |
Output is correct |
| 21 |
Correct |
7 ms |
344 KB |
Output is correct |
| 22 |
Correct |
8 ms |
344 KB |
Output is correct |
| 23 |
Correct |
6 ms |
344 KB |
Output is correct |
| 24 |
Correct |
8 ms |
344 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
5 ms |
344 KB |
Output is correct |
| 27 |
Correct |
6 ms |
344 KB |
Output is correct |
| 28 |
Correct |
6 ms |
344 KB |
Output is correct |
| 29 |
Correct |
6 ms |
344 KB |
Output is correct |
| 30 |
Correct |
5 ms |
344 KB |
Output is correct |
| 31 |
Correct |
6 ms |
344 KB |
Output is correct |
| 32 |
Correct |
10 ms |
344 KB |
Output is correct |
| 33 |
Correct |
11 ms |
344 KB |
Output is correct |
| 34 |
Correct |
12 ms |
344 KB |
Output is correct |
| 35 |
Correct |
8 ms |
344 KB |
Output is correct |
| 36 |
Correct |
11 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
436 KB |
Output is correct |
| 38 |
Correct |
7 ms |
344 KB |
Output is correct |
| 39 |
Correct |
7 ms |
344 KB |
Output is correct |
| 40 |
Correct |
6 ms |
600 KB |
Output is correct |
| 41 |
Correct |
7 ms |
344 KB |
Output is correct |
| 42 |
Correct |
7 ms |
344 KB |
Output is correct |
| 43 |
Correct |
5 ms |
440 KB |
Output is correct |
| 44 |
Correct |
5 ms |
440 KB |
Output is correct |
| 45 |
Correct |
5 ms |
444 KB |
Output is correct |
| 46 |
Correct |
5 ms |
440 KB |
Output is correct |
| 47 |
Correct |
6 ms |
344 KB |
Output is correct |
| 48 |
Correct |
7 ms |
344 KB |
Output is correct |
| 49 |
Correct |
7 ms |
344 KB |
Output is correct |
| 50 |
Correct |
7 ms |
600 KB |
Output is correct |
| 51 |
Correct |
7 ms |
344 KB |
Output is correct |
| 52 |
Correct |
6 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
600 KB |
Output is correct |
| 54 |
Correct |
6 ms |
600 KB |
Output is correct |
| 55 |
Correct |
7 ms |
608 KB |
Output is correct |
| 56 |
Correct |
8 ms |
600 KB |
Output is correct |
| 57 |
Correct |
7 ms |
600 KB |
Output is correct |
| 58 |
Correct |
6 ms |
356 KB |
Output is correct |
| 59 |
Correct |
7 ms |
600 KB |
Output is correct |
| 60 |
Correct |
7 ms |
600 KB |
Output is correct |
| 61 |
Correct |
6 ms |
344 KB |
Output is correct |
| 62 |
Correct |
5 ms |
600 KB |
Output is correct |
| 63 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 64 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 65 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 66 |
Partially correct |
8 ms |
440 KB |
Output is partially correct |
| 67 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 68 |
Partially correct |
7 ms |
608 KB |
Output is partially correct |
| 69 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 70 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 71 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 72 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 73 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 74 |
Partially correct |
7 ms |
440 KB |
Output is partially correct |
| 75 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 76 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 77 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 78 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 79 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 80 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 81 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 82 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
