#include "longesttrip.h"
#include<bits/stdc++.h>
#define pb push_back
#define all(a) (a).begin(), (a).end()
using namespace std;
vector<int> longest_trip(int n, int D) {
if(D == 3) {
vector<int> p;
for(int i = 0;i < n;i++) p.pb(i);
return p;
}
if(D == 2) {
deque<int> dq;
if(!are_connected({0}, {1}))
dq.pb(0), dq.pb(2), dq.pb(1);
else if(!are_connected({1}, {2}))
dq.pb(1), dq.pb(0), dq.pb(2);
else dq.pb(0), dq.pb(1), dq.pb(2);
for(int i = 3;i < n;i++) {
if(are_connected({i}, {dq.front()}))
dq.push_front(i);
else dq.pb(i);
}
return vector<int>(all(dq));
}
if(D == 1) {
vector<int> p1, p2;
if(n & 1) p1.pb(n - 1);
for(int i = 1;i < n;i += 2) {
int a = i - 1, b = i;
if(p2.size()) {
int c = p1.back(), d = p2.back();
if(are_connected({a}, {b})) {
if(are_connected({a}, {c})) {
p1.pb(a), p1.pb(b);
if(are_connected({b}, {d})) {
while(p2.size())
p1.pb(p2.back()), p2.pop_back();
}
} else {
p2.pb(a), p2.pb(b);
if(are_connected({b}, {c})) {
while(p1.size())
p2.pb(p1.back()), p1.pop_back();
}
}
} else {
if(are_connected({a}, {c})) {
if(are_connected({b}, {d}))
p1.pb(a), p2.pb(b);
else p1.pb(b), p2.pb(a);
} else p1.pb(b), p2.pb(a);
}
} else {
if(are_connected({a}, {b})) {
if(p1.size() == 0)
p1.pb(a), p1.pb(b);
else if(are_connected({a}, {p1.back()})) {
p1.pb(a), p1.pb(b);
} else {
if(are_connected({b}, {p1.back()}))
p1.pb(b), p1.pb(a);
else p2.pb(a), p2.pb(b);
}
} else {
if(p1.size() == 0)
p1.pb(a), p2.pb(b);
else if(are_connected({a}, {p1.back()}))
p1.pb(a), p2.pb(b);
else p1.pb(b), p2.pb(a);
}
}
if(p1.size() < p2.size()) swap(p1, p2);
}
if((int)p1.size() == n) return p1;
if(!are_connected(p1, p2)) return p1;
if(are_connected({p1.back()}, {p2[0]})) {
vector<int> p = p1;
for(int i : p2) p.pb(i);
return p;
}
if(are_connected({p2.back()}, {p1[0]})) {
vector<int> p = p2;
for(int i : p1) p.pb(i);
return p;
}
vector<int> v = p1;
while(v.size() > 1) {
int mid = (int)v.size() / 2;
vector<int> v1, v2;
for(int i = 0;i < mid;i++) v1.pb(v[i]);
for(int i = mid;i < (int)v.size();i++) v2.pb(v[i]);
if(are_connected(v1, p2)) v = v1;
else v = v2;
}
int X = v[0];
v = p2;
while(v.size() > 1) {
int mid = (int)v.size() / 2;
vector<int> v1, v2;
for(int i = 0;i < mid;i++) v1.pb(v[i]);
for(int i = mid;i < (int)v.size();i++) v2.pb(v[i]);
if(are_connected({X}, v1)) v = v1;
else v = v2;
}
int Y = v[0];
vector<int> p;
int pos1 = -1, pos2 = -1;
for(int i = 0;i < (int)p1.size();i++)
if(p1[i] == X) pos1 = i;
for(int i = 0;i < (int)p2.size();i++)
if(p2[i] == Y) pos2 = i;
for(int i = 0;i < (int)p1.size();i++)
p.pb(p1[(i + pos1) % (int)p1.size()]);
reverse(all(p));
for(int i = 0;i < (int)p2.size();i++)
p.pb(p2[(i + pos2) % (int)p2.size()]);
return p;
}
return {};
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 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 |
5 ms |
344 KB |
Output is correct |
| 2 |
Correct |
7 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 |
432 KB |
Output is correct |
| 6 |
Correct |
6 ms |
412 KB |
Output is correct |
| 7 |
Correct |
4 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 |
6 ms |
600 KB |
Output is correct |
| 11 |
Correct |
4 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
852 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
344 KB |
Output is correct |
| 2 |
Correct |
5 ms |
344 KB |
Output is correct |
| 3 |
Correct |
4 ms |
540 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
Correct |
6 ms |
344 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 |
344 KB |
Output is correct |
| 9 |
Correct |
5 ms |
344 KB |
Output is correct |
| 10 |
Correct |
4 ms |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
600 KB |
Output is correct |
| 12 |
Correct |
4 ms |
344 KB |
Output is correct |
| 13 |
Correct |
5 ms |
600 KB |
Output is correct |
| 14 |
Correct |
9 ms |
596 KB |
Output is correct |
| 15 |
Correct |
8 ms |
344 KB |
Output is correct |
| 16 |
Correct |
8 ms |
344 KB |
Output is correct |
| 17 |
Correct |
6 ms |
600 KB |
Output is correct |
| 18 |
Correct |
6 ms |
600 KB |
Output is correct |
| 19 |
Correct |
5 ms |
600 KB |
Output is correct |
| 20 |
Correct |
5 ms |
344 KB |
Output is correct |
| 21 |
Correct |
6 ms |
344 KB |
Output is correct |
| 22 |
Correct |
5 ms |
344 KB |
Output is correct |
| 23 |
Correct |
5 ms |
344 KB |
Output is correct |
| 24 |
Correct |
5 ms |
596 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
6 ms |
344 KB |
Output is correct |
| 27 |
Correct |
9 ms |
344 KB |
Output is correct |
| 28 |
Correct |
6 ms |
344 KB |
Output is correct |
| 29 |
Correct |
7 ms |
596 KB |
Output is correct |
| 30 |
Correct |
6 ms |
344 KB |
Output is correct |
| 31 |
Correct |
6 ms |
344 KB |
Output is correct |
| 32 |
Correct |
6 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 |
8 ms |
344 KB |
Output is correct |
| 36 |
Correct |
7 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
600 KB |
Output is correct |
| 38 |
Correct |
6 ms |
600 KB |
Output is correct |
| 39 |
Correct |
7 ms |
600 KB |
Output is correct |
| 40 |
Correct |
6 ms |
344 KB |
Output is correct |
| 41 |
Correct |
8 ms |
344 KB |
Output is correct |
| 42 |
Correct |
7 ms |
344 KB |
Output is correct |
| 43 |
Correct |
8 ms |
600 KB |
Output is correct |
| 44 |
Correct |
6 ms |
596 KB |
Output is correct |
| 45 |
Correct |
7 ms |
344 KB |
Output is correct |
| 46 |
Correct |
7 ms |
344 KB |
Output is correct |
| 47 |
Correct |
8 ms |
344 KB |
Output is correct |
| 48 |
Correct |
7 ms |
344 KB |
Output is correct |
| 49 |
Correct |
8 ms |
596 KB |
Output is correct |
| 50 |
Correct |
6 ms |
436 KB |
Output is correct |
| 51 |
Correct |
7 ms |
436 KB |
Output is correct |
| 52 |
Correct |
8 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
344 KB |
Output is correct |
| 54 |
Correct |
7 ms |
600 KB |
Output is correct |
| 55 |
Correct |
7 ms |
344 KB |
Output is correct |
| 56 |
Correct |
5 ms |
440 KB |
Output is correct |
| 57 |
Correct |
7 ms |
600 KB |
Output is correct |
| 58 |
Correct |
7 ms |
600 KB |
Output is correct |
| 59 |
Correct |
7 ms |
600 KB |
Output is correct |
| 60 |
Correct |
7 ms |
436 KB |
Output is correct |
| 61 |
Correct |
8 ms |
344 KB |
Output is correct |
| 62 |
Correct |
7 ms |
600 KB |
Output is correct |
| 63 |
Correct |
6 ms |
440 KB |
Output is correct |
| 64 |
Correct |
7 ms |
604 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 |
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 |
9 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 |
7 ms |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
4 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
344 KB |
Output is correct |
| 15 |
Correct |
8 ms |
344 KB |
Output is correct |
| 16 |
Correct |
7 ms |
344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
344 KB |
Output is correct |
| 18 |
Correct |
5 ms |
344 KB |
Output is correct |
| 19 |
Correct |
5 ms |
600 KB |
Output is correct |
| 20 |
Correct |
5 ms |
600 KB |
Output is correct |
| 21 |
Correct |
7 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 |
8 ms |
344 KB |
Output is correct |
| 26 |
Correct |
6 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 |
6 ms |
344 KB |
Output is correct |
| 30 |
Correct |
7 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 |
10 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 |
596 KB |
Output is correct |
| 37 |
Correct |
6 ms |
436 KB |
Output is correct |
| 38 |
Correct |
9 ms |
436 KB |
Output is correct |
| 39 |
Correct |
8 ms |
344 KB |
Output is correct |
| 40 |
Correct |
7 ms |
600 KB |
Output is correct |
| 41 |
Correct |
6 ms |
344 KB |
Output is correct |
| 42 |
Correct |
7 ms |
344 KB |
Output is correct |
| 43 |
Correct |
5 ms |
344 KB |
Output is correct |
| 44 |
Correct |
5 ms |
340 KB |
Output is correct |
| 45 |
Correct |
5 ms |
344 KB |
Output is correct |
| 46 |
Correct |
6 ms |
344 KB |
Output is correct |
| 47 |
Correct |
6 ms |
344 KB |
Output is correct |
| 48 |
Correct |
7 ms |
600 KB |
Output is correct |
| 49 |
Correct |
7 ms |
344 KB |
Output is correct |
| 50 |
Correct |
9 ms |
600 KB |
Output is correct |
| 51 |
Correct |
6 ms |
344 KB |
Output is correct |
| 52 |
Correct |
6 ms |
344 KB |
Output is correct |
| 53 |
Correct |
7 ms |
344 KB |
Output is correct |
| 54 |
Correct |
7 ms |
600 KB |
Output is correct |
| 55 |
Correct |
6 ms |
344 KB |
Output is correct |
| 56 |
Correct |
7 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 |
6 ms |
344 KB |
Output is correct |
| 60 |
Correct |
9 ms |
344 KB |
Output is correct |
| 61 |
Correct |
7 ms |
760 KB |
Output is correct |
| 62 |
Correct |
5 ms |
436 KB |
Output is correct |
| 63 |
Correct |
7 ms |
444 KB |
Output is correct |
| 64 |
Correct |
8 ms |
856 KB |
Output is correct |
| 65 |
Correct |
6 ms |
600 KB |
Output is correct |
| 66 |
Correct |
7 ms |
600 KB |
Output is correct |
| 67 |
Correct |
6 ms |
344 KB |
Output is correct |
| 68 |
Correct |
6 ms |
600 KB |
Output is correct |
| 69 |
Correct |
7 ms |
600 KB |
Output is correct |
| 70 |
Correct |
7 ms |
600 KB |
Output is correct |
| 71 |
Correct |
8 ms |
856 KB |
Output is correct |
| 72 |
Correct |
6 ms |
852 KB |
Output is correct |
| 73 |
Correct |
6 ms |
440 KB |
Output is correct |
| 74 |
Correct |
6 ms |
604 KB |
Output is correct |
| 75 |
Correct |
7 ms |
344 KB |
Output is correct |
| 76 |
Correct |
7 ms |
344 KB |
Output is correct |
| 77 |
Correct |
8 ms |
600 KB |
Output is correct |
| 78 |
Correct |
6 ms |
440 KB |
Output is correct |
| 79 |
Correct |
7 ms |
440 KB |
Output is correct |
| 80 |
Correct |
8 ms |
856 KB |
Output is correct |
| 81 |
Correct |
6 ms |
600 KB |
Output is correct |
| 82 |
Correct |
6 ms |
344 KB |
Output is correct |
