#include "longesttrip.h"
#include <algorithm>
#include <numeric>
#include <vector>
std::vector<int> longest_trip(int N, int D) {
std::vector<int> l0,l1;
auto mergeLines = [&l0, &l1]()->void{
while(!l1.empty()) {
l0.push_back(l1.back());
l1.pop_back();
}
return;
};
std::vector<int> p(N);
std::iota(p.begin(),p.end(),0);
std::srand(2023);
std::random_shuffle(p.begin(),p.end());
l0.push_back(p[0]);
for(int i = 1; i < N; i++) {
int u = p[i];
if(l1.empty()) {
(are_connected({l0.back()},{u})?l0:l1).push_back(u);
} else {
if(rand()%2) swap(l0,l1);
if(!are_connected({l0.back()},{u})) {
l1.push_back(u);
} else {
l0.push_back(u);
if(are_connected({l1.back()},{u})) {
mergeLines();
}
}
}
}
if(l1.empty()) return l0;
else if(!are_connected(l0,l1)) {
if(l0.size()>l1.size()) return l0;
else return l1;
} else if(l0.size()>1&&(!are_connected({l0.front()},{l0.back()}))) {
if(!are_connected({l0.back()},{l1.back()})) {
std::reverse(l0.begin(),l0.end());
}
mergeLines();
return l0;
} else if(l1.size()>1&&(!are_connected({l1.front()},{l1.back()}))) {
if(!are_connected({l0.back()},{l1.back()})) {
std::reverse(l1.begin(),l1.end());
}
mergeLines();
return l0;
} else {
std::vector<int> le(l0), ri(l1);
for(int rep = 0; rep < 2; rep++) {
while(le.size()>1) {
std::vector<int> le0,le1;
for(int i = 0; i < int(le.size()); i++) {
(i%2?le0:le1).push_back(le[i]);
}
if(are_connected(le0,ri)) std::swap(le,le0);
else std::swap(le,le1);
}
swap(le,ri);
}
int lei = 0, rii = 0;
while(l0[lei] != le[0]) lei++;
while(l1[rii] != ri[0]) rii++;
std::vector<int> ans;
for(int i = 0; i < int(l0.size()); i++) {
ans.push_back(l0[(lei+i+1)%l0.size()]);
}
for(int i = 0; i < int(l1.size()); i++) {
ans.push_back(l1[(rii+i)%l1.size()]);
}
return ans;
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
208 KB |
Output is correct |
| 2 |
Correct |
2 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
208 KB |
Output is correct |
| 2 |
Correct |
8 ms |
208 KB |
Output is correct |
| 3 |
Correct |
9 ms |
208 KB |
Output is correct |
| 4 |
Correct |
8 ms |
208 KB |
Output is correct |
| 5 |
Correct |
8 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
208 KB |
Output is correct |
| 2 |
Correct |
10 ms |
208 KB |
Output is correct |
| 3 |
Correct |
10 ms |
208 KB |
Output is correct |
| 4 |
Correct |
9 ms |
208 KB |
Output is correct |
| 5 |
Correct |
7 ms |
208 KB |
Output is correct |
| 6 |
Correct |
14 ms |
208 KB |
Output is correct |
| 7 |
Correct |
11 ms |
208 KB |
Output is correct |
| 8 |
Correct |
7 ms |
208 KB |
Output is correct |
| 9 |
Correct |
8 ms |
208 KB |
Output is correct |
| 10 |
Correct |
6 ms |
208 KB |
Output is correct |
| 11 |
Correct |
8 ms |
208 KB |
Output is correct |
| 12 |
Correct |
7 ms |
288 KB |
Output is correct |
| 13 |
Correct |
7 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
208 KB |
Output is correct |
| 2 |
Correct |
8 ms |
208 KB |
Output is correct |
| 3 |
Correct |
10 ms |
208 KB |
Output is correct |
| 4 |
Correct |
7 ms |
208 KB |
Output is correct |
| 5 |
Correct |
9 ms |
208 KB |
Output is correct |
| 6 |
Correct |
9 ms |
208 KB |
Output is correct |
| 7 |
Correct |
8 ms |
208 KB |
Output is correct |
| 8 |
Correct |
7 ms |
208 KB |
Output is correct |
| 9 |
Correct |
6 ms |
208 KB |
Output is correct |
| 10 |
Correct |
8 ms |
208 KB |
Output is correct |
| 11 |
Correct |
6 ms |
208 KB |
Output is correct |
| 12 |
Correct |
7 ms |
208 KB |
Output is correct |
| 13 |
Correct |
7 ms |
208 KB |
Output is correct |
| 14 |
Correct |
14 ms |
208 KB |
Output is correct |
| 15 |
Correct |
10 ms |
208 KB |
Output is correct |
| 16 |
Correct |
13 ms |
208 KB |
Output is correct |
| 17 |
Correct |
13 ms |
208 KB |
Output is correct |
| 18 |
Correct |
8 ms |
208 KB |
Output is correct |
| 19 |
Correct |
6 ms |
332 KB |
Output is correct |
| 20 |
Correct |
8 ms |
208 KB |
Output is correct |
| 21 |
Correct |
8 ms |
208 KB |
Output is correct |
| 22 |
Correct |
4 ms |
208 KB |
Output is correct |
| 23 |
Correct |
9 ms |
208 KB |
Output is correct |
| 24 |
Correct |
7 ms |
208 KB |
Output is correct |
| 25 |
Correct |
11 ms |
208 KB |
Output is correct |
| 26 |
Correct |
8 ms |
208 KB |
Output is correct |
| 27 |
Correct |
9 ms |
208 KB |
Output is correct |
| 28 |
Correct |
10 ms |
208 KB |
Output is correct |
| 29 |
Correct |
10 ms |
208 KB |
Output is correct |
| 30 |
Correct |
7 ms |
208 KB |
Output is correct |
| 31 |
Correct |
12 ms |
208 KB |
Output is correct |
| 32 |
Correct |
10 ms |
208 KB |
Output is correct |
| 33 |
Correct |
9 ms |
256 KB |
Output is correct |
| 34 |
Correct |
9 ms |
208 KB |
Output is correct |
| 35 |
Correct |
9 ms |
208 KB |
Output is correct |
| 36 |
Correct |
11 ms |
208 KB |
Output is correct |
| 37 |
Correct |
10 ms |
208 KB |
Output is correct |
| 38 |
Correct |
10 ms |
208 KB |
Output is correct |
| 39 |
Correct |
10 ms |
332 KB |
Output is correct |
| 40 |
Correct |
10 ms |
208 KB |
Output is correct |
| 41 |
Correct |
13 ms |
208 KB |
Output is correct |
| 42 |
Correct |
8 ms |
208 KB |
Output is correct |
| 43 |
Correct |
14 ms |
208 KB |
Output is correct |
| 44 |
Correct |
10 ms |
332 KB |
Output is correct |
| 45 |
Correct |
11 ms |
208 KB |
Output is correct |
| 46 |
Correct |
11 ms |
208 KB |
Output is correct |
| 47 |
Correct |
14 ms |
208 KB |
Output is correct |
| 48 |
Correct |
12 ms |
208 KB |
Output is correct |
| 49 |
Correct |
14 ms |
208 KB |
Output is correct |
| 50 |
Correct |
9 ms |
208 KB |
Output is correct |
| 51 |
Correct |
12 ms |
276 KB |
Output is correct |
| 52 |
Correct |
12 ms |
260 KB |
Output is correct |
| 53 |
Correct |
9 ms |
208 KB |
Output is correct |
| 54 |
Correct |
10 ms |
208 KB |
Output is correct |
| 55 |
Correct |
9 ms |
208 KB |
Output is correct |
| 56 |
Correct |
8 ms |
208 KB |
Output is correct |
| 57 |
Correct |
10 ms |
208 KB |
Output is correct |
| 58 |
Correct |
11 ms |
208 KB |
Output is correct |
| 59 |
Correct |
13 ms |
384 KB |
Output is correct |
| 60 |
Correct |
12 ms |
208 KB |
Output is correct |
| 61 |
Correct |
15 ms |
208 KB |
Output is correct |
| 62 |
Correct |
10 ms |
208 KB |
Output is correct |
| 63 |
Correct |
12 ms |
208 KB |
Output is correct |
| 64 |
Correct |
11 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
208 KB |
Output is correct |
| 2 |
Correct |
8 ms |
208 KB |
Output is correct |
| 3 |
Correct |
8 ms |
208 KB |
Output is correct |
| 4 |
Correct |
9 ms |
208 KB |
Output is correct |
| 5 |
Correct |
8 ms |
208 KB |
Output is correct |
| 6 |
Correct |
11 ms |
208 KB |
Output is correct |
| 7 |
Correct |
7 ms |
208 KB |
Output is correct |
| 8 |
Correct |
9 ms |
208 KB |
Output is correct |
| 9 |
Correct |
8 ms |
208 KB |
Output is correct |
| 10 |
Correct |
6 ms |
208 KB |
Output is correct |
| 11 |
Correct |
6 ms |
208 KB |
Output is correct |
| 12 |
Correct |
8 ms |
208 KB |
Output is correct |
| 13 |
Correct |
7 ms |
208 KB |
Output is correct |
| 14 |
Correct |
11 ms |
208 KB |
Output is correct |
| 15 |
Correct |
9 ms |
208 KB |
Output is correct |
| 16 |
Correct |
11 ms |
208 KB |
Output is correct |
| 17 |
Correct |
11 ms |
208 KB |
Output is correct |
| 18 |
Correct |
10 ms |
208 KB |
Output is correct |
| 19 |
Correct |
10 ms |
208 KB |
Output is correct |
| 20 |
Correct |
8 ms |
208 KB |
Output is correct |
| 21 |
Correct |
10 ms |
208 KB |
Output is correct |
| 22 |
Correct |
9 ms |
208 KB |
Output is correct |
| 23 |
Correct |
10 ms |
208 KB |
Output is correct |
| 24 |
Correct |
10 ms |
208 KB |
Output is correct |
| 25 |
Correct |
9 ms |
208 KB |
Output is correct |
| 26 |
Correct |
12 ms |
208 KB |
Output is correct |
| 27 |
Correct |
13 ms |
208 KB |
Output is correct |
| 28 |
Correct |
7 ms |
208 KB |
Output is correct |
| 29 |
Correct |
9 ms |
208 KB |
Output is correct |
| 30 |
Correct |
9 ms |
208 KB |
Output is correct |
| 31 |
Correct |
10 ms |
208 KB |
Output is correct |
| 32 |
Correct |
11 ms |
208 KB |
Output is correct |
| 33 |
Correct |
11 ms |
208 KB |
Output is correct |
| 34 |
Correct |
10 ms |
208 KB |
Output is correct |
| 35 |
Correct |
12 ms |
208 KB |
Output is correct |
| 36 |
Correct |
12 ms |
208 KB |
Output is correct |
| 37 |
Correct |
9 ms |
208 KB |
Output is correct |
| 38 |
Correct |
14 ms |
256 KB |
Output is correct |
| 39 |
Correct |
12 ms |
208 KB |
Output is correct |
| 40 |
Correct |
11 ms |
208 KB |
Output is correct |
| 41 |
Correct |
13 ms |
208 KB |
Output is correct |
| 42 |
Correct |
12 ms |
208 KB |
Output is correct |
| 43 |
Correct |
10 ms |
208 KB |
Output is correct |
| 44 |
Correct |
7 ms |
208 KB |
Output is correct |
| 45 |
Correct |
7 ms |
208 KB |
Output is correct |
| 46 |
Correct |
7 ms |
292 KB |
Output is correct |
| 47 |
Correct |
8 ms |
208 KB |
Output is correct |
| 48 |
Correct |
11 ms |
208 KB |
Output is correct |
| 49 |
Correct |
9 ms |
208 KB |
Output is correct |
| 50 |
Correct |
12 ms |
208 KB |
Output is correct |
| 51 |
Correct |
13 ms |
208 KB |
Output is correct |
| 52 |
Correct |
7 ms |
208 KB |
Output is correct |
| 53 |
Correct |
9 ms |
208 KB |
Output is correct |
| 54 |
Partially correct |
12 ms |
208 KB |
Output is partially correct |
| 55 |
Correct |
10 ms |
208 KB |
Output is correct |
| 56 |
Correct |
12 ms |
208 KB |
Output is correct |
| 57 |
Correct |
13 ms |
208 KB |
Output is correct |
| 58 |
Correct |
11 ms |
208 KB |
Output is correct |
| 59 |
Correct |
11 ms |
208 KB |
Output is correct |
| 60 |
Correct |
12 ms |
208 KB |
Output is correct |
| 61 |
Correct |
8 ms |
208 KB |
Output is correct |
| 62 |
Correct |
8 ms |
288 KB |
Output is correct |
| 63 |
Correct |
10 ms |
208 KB |
Output is correct |
| 64 |
Correct |
13 ms |
208 KB |
Output is correct |
| 65 |
Partially correct |
10 ms |
208 KB |
Output is partially correct |
| 66 |
Partially correct |
8 ms |
292 KB |
Output is partially correct |
| 67 |
Partially correct |
13 ms |
208 KB |
Output is partially correct |
| 68 |
Partially correct |
11 ms |
208 KB |
Output is partially correct |
| 69 |
Correct |
11 ms |
256 KB |
Output is correct |
| 70 |
Partially correct |
11 ms |
208 KB |
Output is partially correct |
| 71 |
Partially correct |
12 ms |
292 KB |
Output is partially correct |
| 72 |
Partially correct |
6 ms |
292 KB |
Output is partially correct |
| 73 |
Partially correct |
9 ms |
208 KB |
Output is partially correct |
| 74 |
Partially correct |
11 ms |
208 KB |
Output is partially correct |
| 75 |
Partially correct |
11 ms |
292 KB |
Output is partially correct |
| 76 |
Partially correct |
9 ms |
208 KB |
Output is partially correct |
| 77 |
Correct |
10 ms |
208 KB |
Output is correct |
| 78 |
Correct |
12 ms |
280 KB |
Output is correct |
| 79 |
Partially correct |
12 ms |
208 KB |
Output is partially correct |
| 80 |
Partially correct |
10 ms |
208 KB |
Output is partially correct |
| 81 |
Partially correct |
11 ms |
288 KB |
Output is partially correct |
| 82 |
Correct |
13 ms |
208 KB |
Output is correct |
