#include <bits/stdc++.h>
#include "longesttrip.h"
using namespace std;
vector<int> longest_trip(int N, int D)
{
if (D == 3)
{
vector<int> res(N);
iota(res.begin(), res.end(), 0);
return res;
}
if (D == 2)
{
vector<int> res;
int cur;
if (are_connected({0}, {1}))
res = {0, 1}, cur = 2;
else
res = {0, 2, 1}, cur = 3;
for (int i = cur; i < N; i++)
{
if (!are_connected({res.back()}, {i}))
reverse(res.begin(), res.end());
res.push_back(i);
}
return res;
}
vector<int> A = {0}, B = {1};
bool flagAB = false;
for (int i = 2; i < N; i++)
{
if (flagAB || are_connected({i}, {A.back(), B.back()}))
{
if (are_connected({i}, {A.back()}))
A.push_back(i);
else
{
flagAB = true; // we know that there is no edge between A.back() and B.back().
B.push_back(i);
continue;
}
}
else
{
reverse(B.begin(), B.end());
for (int x : B)
A.push_back(x);
B = {i};
}
flagAB = false;
}
if (!are_connected(A, B))
{
if (A.size() > B.size())
return A;
return B;
}
if (A.size() > 1 && !are_connected({A[0]}, {A.back()}))
{
if ((!flagAB) && are_connected({A.back()}, {B.back()}))
reverse(A.begin(), A.end());
for (int x : A)
B.push_back(x);
return B;
}
if (B.size() > 1 && !are_connected({B[0]}, {B.back()}))
{
if ((!flagAB) && are_connected({A.back()}, {B.back()}))
reverse(B.begin(), B.end());
for (int x : B)
A.push_back(x);
return A;
}
int lo = 1, hi = A.size();
while (lo < hi)
{
int mid = (lo + hi) / 2;
if (are_connected(vector<int>(A.begin(), A.begin() + mid), B))
hi = mid;
else
lo = mid + 1;
}
int idxA = lo - 1;
lo = 1, hi = B.size();
while (lo < hi)
{
int mid = (lo + hi) / 2;
if (are_connected(vector<int>(B.begin(), B.begin() + mid), {A[idxA]}))
hi = mid;
else
lo = mid + 1;
}
int idxB = lo - 1;
vector<int> res;
for (int i = idxA + 1; i < A.size(); i++)
res.push_back(A[i]);
for (int i = 0; i <= idxA; i++)
res.push_back(A[i]);
for (int i = idxB; i < B.size(); i++)
res.push_back(B[i]);
for (int i = 0; i < idxB; i++)
res.push_back(B[i]);
return res;
}
Compilation message
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:100:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
100 | for (int i = idxA + 1; i < A.size(); i++)
| ~~^~~~~~~~~~
longesttrip.cpp:104:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
104 | for (int i = idxB; i < B.size(); i++)
| ~~^~~~~~~~~~
| # |
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 |
3 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
344 KB |
Output is correct |
| 2 |
Correct |
6 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 |
5 ms |
344 KB |
Output is correct |
| 7 |
Correct |
5 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 |
5 ms |
596 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
5 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
344 KB |
Output is correct |
| 2 |
Correct |
12 ms |
344 KB |
Output is correct |
| 3 |
Correct |
9 ms |
344 KB |
Output is correct |
| 4 |
Correct |
10 ms |
344 KB |
Output is correct |
| 5 |
Correct |
10 ms |
600 KB |
Output is correct |
| 6 |
Correct |
12 ms |
344 KB |
Output is correct |
| 7 |
Correct |
10 ms |
344 KB |
Output is correct |
| 8 |
Correct |
9 ms |
344 KB |
Output is correct |
| 9 |
Correct |
8 ms |
344 KB |
Output is correct |
| 10 |
Correct |
9 ms |
344 KB |
Output is correct |
| 11 |
Correct |
8 ms |
600 KB |
Output is correct |
| 12 |
Correct |
9 ms |
600 KB |
Output is correct |
| 13 |
Correct |
9 ms |
600 KB |
Output is correct |
| 14 |
Correct |
7 ms |
344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
344 KB |
Output is correct |
| 16 |
Correct |
11 ms |
344 KB |
Output is correct |
| 17 |
Correct |
9 ms |
344 KB |
Output is correct |
| 18 |
Correct |
9 ms |
600 KB |
Output is correct |
| 19 |
Correct |
9 ms |
600 KB |
Output is correct |
| 20 |
Correct |
9 ms |
344 KB |
Output is correct |
| 21 |
Correct |
9 ms |
600 KB |
Output is correct |
| 22 |
Correct |
8 ms |
440 KB |
Output is correct |
| 23 |
Correct |
9 ms |
600 KB |
Output is correct |
| 24 |
Correct |
8 ms |
440 KB |
Output is correct |
| 25 |
Correct |
6 ms |
344 KB |
Output is correct |
| 26 |
Correct |
8 ms |
344 KB |
Output is correct |
| 27 |
Correct |
7 ms |
344 KB |
Output is correct |
| 28 |
Correct |
8 ms |
344 KB |
Output is correct |
| 29 |
Correct |
7 ms |
344 KB |
Output is correct |
| 30 |
Correct |
8 ms |
344 KB |
Output is correct |
| 31 |
Correct |
7 ms |
344 KB |
Output is correct |
| 32 |
Correct |
6 ms |
344 KB |
Output is correct |
| 33 |
Correct |
8 ms |
344 KB |
Output is correct |
| 34 |
Correct |
8 ms |
344 KB |
Output is correct |
| 35 |
Correct |
9 ms |
344 KB |
Output is correct |
| 36 |
Correct |
8 ms |
344 KB |
Output is correct |
| 37 |
Correct |
10 ms |
600 KB |
Output is correct |
| 38 |
Correct |
9 ms |
600 KB |
Output is correct |
| 39 |
Correct |
9 ms |
344 KB |
Output is correct |
| 40 |
Correct |
7 ms |
344 KB |
Output is correct |
| 41 |
Correct |
6 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 |
6 ms |
600 KB |
Output is correct |
| 45 |
Correct |
12 ms |
344 KB |
Output is correct |
| 46 |
Correct |
10 ms |
344 KB |
Output is correct |
| 47 |
Correct |
11 ms |
344 KB |
Output is correct |
| 48 |
Correct |
11 ms |
344 KB |
Output is correct |
| 49 |
Correct |
10 ms |
344 KB |
Output is correct |
| 50 |
Correct |
10 ms |
600 KB |
Output is correct |
| 51 |
Correct |
9 ms |
440 KB |
Output is correct |
| 52 |
Correct |
7 ms |
344 KB |
Output is correct |
| 53 |
Correct |
9 ms |
344 KB |
Output is correct |
| 54 |
Correct |
10 ms |
600 KB |
Output is correct |
| 55 |
Correct |
9 ms |
344 KB |
Output is correct |
| 56 |
Correct |
10 ms |
440 KB |
Output is correct |
| 57 |
Correct |
9 ms |
444 KB |
Output is correct |
| 58 |
Correct |
7 ms |
440 KB |
Output is correct |
| 59 |
Correct |
9 ms |
856 KB |
Output is correct |
| 60 |
Correct |
9 ms |
856 KB |
Output is correct |
| 61 |
Correct |
7 ms |
432 KB |
Output is correct |
| 62 |
Correct |
8 ms |
432 KB |
Output is correct |
| 63 |
Correct |
8 ms |
600 KB |
Output is correct |
| 64 |
Correct |
8 ms |
860 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
344 KB |
Output is correct |
| 2 |
Correct |
11 ms |
344 KB |
Output is correct |
| 3 |
Correct |
9 ms |
344 KB |
Output is correct |
| 4 |
Correct |
9 ms |
344 KB |
Output is correct |
| 5 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 6 |
Correct |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
11 ms |
344 KB |
Output is correct |
| 8 |
Correct |
9 ms |
344 KB |
Output is correct |
| 9 |
Correct |
9 ms |
600 KB |
Output is correct |
| 10 |
Partially correct |
11 ms |
600 KB |
Output is partially correct |
| 11 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 12 |
Partially correct |
10 ms |
344 KB |
Output is partially correct |
| 13 |
Partially correct |
9 ms |
340 KB |
Output is partially correct |
| 14 |
Correct |
6 ms |
344 KB |
Output is correct |
| 15 |
Correct |
8 ms |
344 KB |
Output is correct |
| 16 |
Correct |
9 ms |
344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
344 KB |
Output is correct |
| 18 |
Correct |
8 ms |
432 KB |
Output is correct |
| 19 |
Correct |
8 ms |
344 KB |
Output is correct |
| 20 |
Correct |
8 ms |
600 KB |
Output is correct |
| 21 |
Correct |
7 ms |
344 KB |
Output is correct |
| 22 |
Correct |
8 ms |
596 KB |
Output is correct |
| 23 |
Correct |
7 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 |
8 ms |
344 KB |
Output is correct |
| 27 |
Correct |
7 ms |
344 KB |
Output is correct |
| 28 |
Correct |
6 ms |
344 KB |
Output is correct |
| 29 |
Correct |
8 ms |
344 KB |
Output is correct |
| 30 |
Correct |
8 ms |
344 KB |
Output is correct |
| 31 |
Correct |
8 ms |
344 KB |
Output is correct |
| 32 |
Correct |
10 ms |
344 KB |
Output is correct |
| 33 |
Correct |
9 ms |
344 KB |
Output is correct |
| 34 |
Correct |
9 ms |
344 KB |
Output is correct |
| 35 |
Correct |
10 ms |
344 KB |
Output is correct |
| 36 |
Correct |
10 ms |
344 KB |
Output is correct |
| 37 |
Correct |
9 ms |
432 KB |
Output is correct |
| 38 |
Correct |
7 ms |
436 KB |
Output is correct |
| 39 |
Correct |
8 ms |
344 KB |
Output is correct |
| 40 |
Correct |
11 ms |
600 KB |
Output is correct |
| 41 |
Correct |
10 ms |
600 KB |
Output is correct |
| 42 |
Correct |
8 ms |
372 KB |
Output is correct |
| 43 |
Partially correct |
9 ms |
604 KB |
Output is partially correct |
| 44 |
Partially correct |
9 ms |
436 KB |
Output is partially correct |
| 45 |
Partially correct |
9 ms |
436 KB |
Output is partially correct |
| 46 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 47 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 48 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 49 |
Partially correct |
8 ms |
436 KB |
Output is partially correct |
| 50 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 51 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 52 |
Correct |
8 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
344 KB |
Output is correct |
| 54 |
Correct |
6 ms |
344 KB |
Output is correct |
| 55 |
Correct |
7 ms |
344 KB |
Output is correct |
| 56 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 57 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 58 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 59 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 60 |
Correct |
8 ms |
600 KB |
Output is correct |
| 61 |
Correct |
7 ms |
428 KB |
Output is correct |
| 62 |
Partially correct |
9 ms |
600 KB |
Output is partially correct |
| 63 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 64 |
Partially correct |
7 ms |
444 KB |
Output is partially correct |
| 65 |
Partially correct |
7 ms |
604 KB |
Output is partially correct |
| 66 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
| 67 |
Correct |
7 ms |
692 KB |
Output is correct |
| 68 |
Correct |
8 ms |
856 KB |
Output is correct |
| 69 |
Partially correct |
9 ms |
688 KB |
Output is partially correct |
| 70 |
Partially correct |
7 ms |
604 KB |
Output is partially correct |
| 71 |
Partially correct |
9 ms |
600 KB |
Output is partially correct |
| 72 |
Partially correct |
9 ms |
604 KB |
Output is partially correct |
| 73 |
Partially correct |
7 ms |
696 KB |
Output is partially correct |
| 74 |
Partially correct |
7 ms |
444 KB |
Output is partially correct |
| 75 |
Correct |
7 ms |
440 KB |
Output is correct |
| 76 |
Correct |
8 ms |
600 KB |
Output is correct |
| 77 |
Partially correct |
9 ms |
604 KB |
Output is partially correct |
| 78 |
Partially correct |
8 ms |
604 KB |
Output is partially correct |
| 79 |
Partially correct |
8 ms |
440 KB |
Output is partially correct |
| 80 |
Partially correct |
7 ms |
700 KB |
Output is partially correct |
| 81 |
Correct |
8 ms |
612 KB |
Output is correct |
| 82 |
Correct |
7 ms |
604 KB |
Output is correct |
