#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int adj[256][256], n;
int E(int x, int y){
assert(x != y);
if (adj[x][y] != -1) return adj[x][y];
adj[x][y] = adj[y][x] = are_connected({x}, {y});
for (int z=0;z<n;z++) if (x!=z && y!=z){
if (!adj[x][y] && !adj[x][z]) adj[y][z] = adj[z][y] = 1;
if (!adj[x][y] && !adj[y][z]) adj[x][z] = adj[z][x] = 1;
}
return adj[x][y];
}
vector<int> rev(vector<int> A){
reverse(A.begin(), A.end());
return A;
}
vector<int> operator + (const vector<int> &A, const vector<int> &B){
vector<int> ret = A;
for (auto &x:B) ret.push_back(x);
return ret;
}
std::vector<int> longest_trip(int N, int D)
{
n = N;
for (int i=0;i<N;i++) for (int j=0;j<N;j++) adj[i][j] = -1;
for (int i=0;i<N;i++) adj[i][i] = 0;
vector<int> A = {0}, B, fuck;
mt19937 seed(1557);
for (int i=1;i<N;i++) fuck.push_back(i);
shuffle(fuck.begin(), fuck.end(), seed);
for (int i:fuck){
if (B.empty()) {B.push_back(i); continue;}
if (E(A.back(), i)) {A.push_back(i); continue;}
if (E(B.back(), i)) {B.push_back(i); continue;}
A = A + rev(B);
B.clear();
B.push_back(i);
}
if (!are_connected(A, B)){
if (A.size() >= B.size()) return A;
return B;
}
if (E(A.back(), B[0])) return A + B;
if (E(A.back(), B.back())) return A + rev(B);
if (E(A[0], B.back())) return rev(A) + rev(B);
if (E(A[0], B[0])) return rev(A) + B;
int l = 0, r = (int)A.size()-1, ans1 = (int)A.size()-1;
while(l<=r){
int mid = (l+r)>>1;
if (are_connected(vector<int>(A.begin(), A.begin()+mid+1), B)) ans1 = mid, r = mid-1;
else l = mid+1;
}
l = 0, r = (int)B.size()-1;
int ans2 = (int)B.size()-1;
while(l<=r){
int mid = (l+r)>>1;
if (are_connected({A[ans1]}, vector<int>(B.begin(), B.begin()+mid+1))) ans2 = mid, r = mid-1;
else l = mid+1;
}
rotate(A.begin(), A.begin()+ans1, A.end());
rotate(B.begin(), B.begin()+ans2, B.end());
return rev(A) + B;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
2 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
344 KB |
Output is correct |
| 2 |
Correct |
8 ms |
344 KB |
Output is correct |
| 3 |
Correct |
7 ms |
344 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
Correct |
6 ms |
600 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 |
7 ms |
344 KB |
Output is correct |
| 4 |
Correct |
7 ms |
344 KB |
Output is correct |
| 5 |
Correct |
6 ms |
600 KB |
Output is correct |
| 6 |
Correct |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
6 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 |
6 ms |
600 KB |
Output is correct |
| 11 |
Correct |
6 ms |
600 KB |
Output is correct |
| 12 |
Correct |
6 ms |
600 KB |
Output is correct |
| 13 |
Correct |
6 ms |
600 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 |
5 ms |
340 KB |
Output is correct |
| 4 |
Correct |
7 ms |
576 KB |
Output is correct |
| 5 |
Correct |
6 ms |
600 KB |
Output is correct |
| 6 |
Correct |
11 ms |
344 KB |
Output is correct |
| 7 |
Correct |
5 ms |
340 KB |
Output is correct |
| 8 |
Correct |
5 ms |
344 KB |
Output is correct |
| 9 |
Correct |
6 ms |
544 KB |
Output is correct |
| 10 |
Correct |
7 ms |
600 KB |
Output is correct |
| 11 |
Correct |
6 ms |
704 KB |
Output is correct |
| 12 |
Correct |
5 ms |
600 KB |
Output is correct |
| 13 |
Correct |
8 ms |
600 KB |
Output is correct |
| 14 |
Correct |
10 ms |
344 KB |
Output is correct |
| 15 |
Correct |
7 ms |
344 KB |
Output is correct |
| 16 |
Correct |
6 ms |
344 KB |
Output is correct |
| 17 |
Correct |
7 ms |
600 KB |
Output is correct |
| 18 |
Correct |
7 ms |
500 KB |
Output is correct |
| 19 |
Correct |
6 ms |
344 KB |
Output is correct |
| 20 |
Correct |
7 ms |
344 KB |
Output is correct |
| 21 |
Correct |
6 ms |
600 KB |
Output is correct |
| 22 |
Correct |
9 ms |
856 KB |
Output is correct |
| 23 |
Correct |
6 ms |
596 KB |
Output is correct |
| 24 |
Correct |
7 ms |
712 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
9 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 |
5 ms |
344 KB |
Output is correct |
| 30 |
Correct |
7 ms |
344 KB |
Output is correct |
| 31 |
Correct |
5 ms |
344 KB |
Output is correct |
| 32 |
Correct |
7 ms |
344 KB |
Output is correct |
| 33 |
Correct |
5 ms |
344 KB |
Output is correct |
| 34 |
Correct |
6 ms |
344 KB |
Output is correct |
| 35 |
Correct |
5 ms |
344 KB |
Output is correct |
| 36 |
Correct |
7 ms |
856 KB |
Output is correct |
| 37 |
Correct |
6 ms |
856 KB |
Output is correct |
| 38 |
Correct |
8 ms |
708 KB |
Output is correct |
| 39 |
Correct |
7 ms |
600 KB |
Output is correct |
| 40 |
Correct |
7 ms |
696 KB |
Output is correct |
| 41 |
Correct |
7 ms |
600 KB |
Output is correct |
| 42 |
Correct |
7 ms |
600 KB |
Output is correct |
| 43 |
Correct |
10 ms |
600 KB |
Output is correct |
| 44 |
Correct |
7 ms |
600 KB |
Output is correct |
| 45 |
Correct |
9 ms |
344 KB |
Output is correct |
| 46 |
Correct |
13 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 |
340 KB |
Output is correct |
| 50 |
Correct |
6 ms |
512 KB |
Output is correct |
| 51 |
Correct |
10 ms |
344 KB |
Output is correct |
| 52 |
Correct |
9 ms |
344 KB |
Output is correct |
| 53 |
Correct |
7 ms |
600 KB |
Output is correct |
| 54 |
Correct |
9 ms |
344 KB |
Output is correct |
| 55 |
Correct |
7 ms |
344 KB |
Output is correct |
| 56 |
Correct |
6 ms |
600 KB |
Output is correct |
| 57 |
Correct |
6 ms |
600 KB |
Output is correct |
| 58 |
Correct |
7 ms |
712 KB |
Output is correct |
| 59 |
Correct |
7 ms |
600 KB |
Output is correct |
| 60 |
Correct |
9 ms |
600 KB |
Output is correct |
| 61 |
Correct |
10 ms |
700 KB |
Output is correct |
| 62 |
Correct |
11 ms |
684 KB |
Output is correct |
| 63 |
Correct |
9 ms |
856 KB |
Output is correct |
| 64 |
Correct |
8 ms |
712 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
344 KB |
Output is correct |
| 2 |
Correct |
9 ms |
344 KB |
Output is correct |
| 3 |
Correct |
7 ms |
344 KB |
Output is correct |
| 4 |
Correct |
7 ms |
344 KB |
Output is correct |
| 5 |
Correct |
10 ms |
856 KB |
Output is correct |
| 6 |
Correct |
11 ms |
344 KB |
Output is correct |
| 7 |
Correct |
8 ms |
344 KB |
Output is correct |
| 8 |
Correct |
6 ms |
344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
600 KB |
Output is correct |
| 11 |
Correct |
7 ms |
600 KB |
Output is correct |
| 12 |
Correct |
6 ms |
856 KB |
Output is correct |
| 13 |
Correct |
8 ms |
704 KB |
Output is correct |
| 14 |
Correct |
7 ms |
344 KB |
Output is correct |
| 15 |
Correct |
7 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 |
10 ms |
492 KB |
Output is correct |
| 19 |
Correct |
5 ms |
344 KB |
Output is correct |
| 20 |
Correct |
6 ms |
344 KB |
Output is correct |
| 21 |
Correct |
6 ms |
344 KB |
Output is correct |
| 22 |
Correct |
10 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 |
6 ms |
344 KB |
Output is correct |
| 26 |
Correct |
5 ms |
508 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 |
552 KB |
Output is correct |
| 30 |
Correct |
5 ms |
344 KB |
Output is correct |
| 31 |
Correct |
4 ms |
344 KB |
Output is correct |
| 32 |
Correct |
8 ms |
344 KB |
Output is correct |
| 33 |
Correct |
9 ms |
344 KB |
Output is correct |
| 34 |
Correct |
10 ms |
344 KB |
Output is correct |
| 35 |
Correct |
10 ms |
344 KB |
Output is correct |
| 36 |
Correct |
11 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
344 KB |
Output is correct |
| 38 |
Correct |
8 ms |
344 KB |
Output is correct |
| 39 |
Correct |
7 ms |
344 KB |
Output is correct |
| 40 |
Correct |
6 ms |
344 KB |
Output is correct |
| 41 |
Correct |
8 ms |
600 KB |
Output is correct |
| 42 |
Correct |
6 ms |
560 KB |
Output is correct |
| 43 |
Correct |
6 ms |
600 KB |
Output is correct |
| 44 |
Correct |
6 ms |
600 KB |
Output is correct |
| 45 |
Correct |
6 ms |
600 KB |
Output is correct |
| 46 |
Correct |
6 ms |
600 KB |
Output is correct |
| 47 |
Correct |
6 ms |
600 KB |
Output is correct |
| 48 |
Correct |
6 ms |
708 KB |
Output is correct |
| 49 |
Correct |
7 ms |
600 KB |
Output is correct |
| 50 |
Correct |
7 ms |
600 KB |
Output is correct |
| 51 |
Correct |
7 ms |
600 KB |
Output is correct |
| 52 |
Correct |
8 ms |
600 KB |
Output is correct |
| 53 |
Correct |
7 ms |
600 KB |
Output is correct |
| 54 |
Correct |
10 ms |
600 KB |
Output is correct |
| 55 |
Correct |
8 ms |
600 KB |
Output is correct |
| 56 |
Correct |
8 ms |
600 KB |
Output is correct |
| 57 |
Correct |
6 ms |
600 KB |
Output is correct |
| 58 |
Correct |
7 ms |
600 KB |
Output is correct |
| 59 |
Correct |
6 ms |
600 KB |
Output is correct |
| 60 |
Correct |
7 ms |
600 KB |
Output is correct |
| 61 |
Correct |
7 ms |
600 KB |
Output is correct |
| 62 |
Correct |
6 ms |
600 KB |
Output is correct |
| 63 |
Correct |
6 ms |
968 KB |
Output is correct |
| 64 |
Correct |
10 ms |
696 KB |
Output is correct |
| 65 |
Correct |
7 ms |
600 KB |
Output is correct |
| 66 |
Correct |
7 ms |
708 KB |
Output is correct |
| 67 |
Correct |
8 ms |
600 KB |
Output is correct |
| 68 |
Correct |
8 ms |
856 KB |
Output is correct |
| 69 |
Correct |
10 ms |
600 KB |
Output is correct |
| 70 |
Correct |
9 ms |
856 KB |
Output is correct |
| 71 |
Correct |
8 ms |
600 KB |
Output is correct |
| 72 |
Correct |
6 ms |
600 KB |
Output is correct |
| 73 |
Correct |
7 ms |
600 KB |
Output is correct |
| 74 |
Correct |
11 ms |
600 KB |
Output is correct |
| 75 |
Correct |
9 ms |
684 KB |
Output is correct |
| 76 |
Correct |
11 ms |
600 KB |
Output is correct |
| 77 |
Correct |
6 ms |
600 KB |
Output is correct |
| 78 |
Correct |
10 ms |
708 KB |
Output is correct |
| 79 |
Correct |
7 ms |
600 KB |
Output is correct |
| 80 |
Correct |
12 ms |
856 KB |
Output is correct |
| 81 |
Correct |
8 ms |
600 KB |
Output is correct |
| 82 |
Correct |
8 ms |
704 KB |
Output is correct |
