#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
bool connected(deque<int> A, deque<int> B){
vector<int> Av,Bv;Av.clear(),Bv.clear();
for(auto u : A) Av.pb(u);
for(auto u : B) Bv.pb(u);
return are_connected(Av,Bv);
}
vector<int> longest_trip(int N, int D){
srand(time(0));
deque<int> line1, line2; line1.clear(),line2.clear();
vector<int> ord(N,0); iota(all(ord),0);
random_shuffle(all(ord)); random_shuffle(all(ord));
set<pair<int,int>> bad; bad.clear();
for(auto x : ord){
if(line1.empty()) line1.push_back(x);
else if(line2.empty()) line2.push_back(x);
else{
int L1 = line1.back(), L2 = line2.back();
if(!bad.count({min(L1,L2),max(L1,L2)}) and are_connected({L1},{L2})){
reverse(all(line2));
for(auto u : line2) line1.pb(u);
line2.clear(); line2.push_back(x);
}
else{
if(are_connected({x},{L1})) line1.pb(x);
else line2.pb(x);
bad.insert({min(L1,L2),max(L1,L2)});
}
}
}
vector<int> ans; ans.clear();
if(line2.empty()){
for(auto u : line1) ans.pb(u);
return ans;
}
if(!connected(line1,line2)){
if(sz(line1)<sz(line2)) swap(line1,line2);
for(auto u : line1) ans.pb(u);
return ans;
}
if(sz(line2)<2 or sz(line1)<2 or are_connected({line1[0],line1.back()},{line2[0],line2.back()})){
if(are_connected({line1.back()},{line2.back()})){
for(auto u : line1) ans.pb(u);
reverse(all(line2));
for(auto u : line2) ans.pb(u);
return ans;
}
if(are_connected({line1.back()},{line2[0]})){
for(auto u : line1) ans.pb(u);
for(auto u : line2) ans.pb(u);
return ans;
}
if(are_connected({line1[0]},{line2[0]})){
reverse(all(line2));
for(auto u : line2) ans.pb(u);
for(auto u : line1) ans.pb(u);
return ans;
}
if(are_connected({line1[0]},{line2.back()})){
for(auto u : line2) ans.pb(u);
for(auto u : line1) ans.pb(u);
return ans;
}
}
int l = 0, r = sz(line1)-1;
while(l<r){
int mid = (l+r)/2;
deque<int> dq; dq.clear();
for(int i = 0; i <= mid; i++) dq.pb(line1[i]);
if(connected(dq,line2)) r=mid;
else l=mid+1;
}
int x = l;
l=0, r = sz(line2)-1;
while(l<r){
int mid = (l+r)/2;
vector<int> v; v.clear();
for(int i = 0; i <= mid; i++) v.pb(line2[i]);
if(are_connected({line1[x]},v)) r=mid;
else l=mid+1;
}
int y = l;
for(int i = x+1; i<sz(line1); i++) ans.pb(line1[i]);
for(int i = 0; i<=x; i++) ans.pb(line1[i]);
for(int i = y; i < sz(line2); i++) ans.pb(line2[i]);
for(int i = 0; i < y; i++) ans.pb(line2[i]);
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
2 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
344 KB |
Output is correct |
| 2 |
Correct |
7 ms |
344 KB |
Output is correct |
| 3 |
Correct |
9 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
7 ms |
344 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 |
8 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
7 ms |
344 KB |
Output is correct |
| 6 |
Correct |
8 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 |
5 ms |
344 KB |
Output is correct |
| 10 |
Correct |
7 ms |
344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 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 |
3 ms |
344 KB |
Output is correct |
| 4 |
Correct |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
600 KB |
Output is correct |
| 6 |
Correct |
12 ms |
344 KB |
Output is correct |
| 7 |
Correct |
9 ms |
344 KB |
Output is correct |
| 8 |
Correct |
7 ms |
600 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 |
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 |
8 ms |
344 KB |
Output is correct |
| 15 |
Correct |
9 ms |
344 KB |
Output is correct |
| 16 |
Correct |
8 ms |
344 KB |
Output is correct |
| 17 |
Correct |
6 ms |
344 KB |
Output is correct |
| 18 |
Correct |
7 ms |
344 KB |
Output is correct |
| 19 |
Correct |
6 ms |
344 KB |
Output is correct |
| 20 |
Correct |
5 ms |
440 KB |
Output is correct |
| 21 |
Correct |
6 ms |
344 KB |
Output is correct |
| 22 |
Correct |
7 ms |
344 KB |
Output is correct |
| 23 |
Correct |
5 ms |
344 KB |
Output is correct |
| 24 |
Correct |
5 ms |
344 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
10 ms |
344 KB |
Output is correct |
| 27 |
Correct |
8 ms |
344 KB |
Output is correct |
| 28 |
Correct |
7 ms |
344 KB |
Output is correct |
| 29 |
Correct |
8 ms |
344 KB |
Output is correct |
| 30 |
Correct |
7 ms |
440 KB |
Output is correct |
| 31 |
Correct |
9 ms |
344 KB |
Output is correct |
| 32 |
Correct |
10 ms |
344 KB |
Output is correct |
| 33 |
Correct |
8 ms |
344 KB |
Output is correct |
| 34 |
Correct |
9 ms |
344 KB |
Output is correct |
| 35 |
Correct |
11 ms |
344 KB |
Output is correct |
| 36 |
Correct |
8 ms |
344 KB |
Output is correct |
| 37 |
Correct |
8 ms |
344 KB |
Output is correct |
| 38 |
Correct |
10 ms |
344 KB |
Output is correct |
| 39 |
Correct |
13 ms |
600 KB |
Output is correct |
| 40 |
Correct |
10 ms |
344 KB |
Output is correct |
| 41 |
Correct |
7 ms |
344 KB |
Output is correct |
| 42 |
Correct |
11 ms |
340 KB |
Output is correct |
| 43 |
Correct |
7 ms |
344 KB |
Output is correct |
| 44 |
Correct |
8 ms |
344 KB |
Output is correct |
| 45 |
Correct |
8 ms |
344 KB |
Output is correct |
| 46 |
Correct |
8 ms |
344 KB |
Output is correct |
| 47 |
Correct |
9 ms |
344 KB |
Output is correct |
| 48 |
Correct |
15 ms |
344 KB |
Output is correct |
| 49 |
Correct |
8 ms |
344 KB |
Output is correct |
| 50 |
Correct |
10 ms |
344 KB |
Output is correct |
| 51 |
Correct |
10 ms |
344 KB |
Output is correct |
| 52 |
Correct |
13 ms |
600 KB |
Output is correct |
| 53 |
Correct |
10 ms |
348 KB |
Output is correct |
| 54 |
Correct |
9 ms |
344 KB |
Output is correct |
| 55 |
Correct |
12 ms |
436 KB |
Output is correct |
| 56 |
Correct |
8 ms |
456 KB |
Output is correct |
| 57 |
Correct |
10 ms |
464 KB |
Output is correct |
| 58 |
Correct |
9 ms |
344 KB |
Output is correct |
| 59 |
Correct |
10 ms |
464 KB |
Output is correct |
| 60 |
Correct |
10 ms |
344 KB |
Output is correct |
| 61 |
Correct |
11 ms |
344 KB |
Output is correct |
| 62 |
Correct |
10 ms |
344 KB |
Output is correct |
| 63 |
Correct |
13 ms |
344 KB |
Output is correct |
| 64 |
Correct |
10 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 |
6 ms |
344 KB |
Output is correct |
| 6 |
Correct |
7 ms |
344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
344 KB |
Output is correct |
| 8 |
Correct |
5 ms |
340 KB |
Output is correct |
| 9 |
Correct |
4 ms |
344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
600 KB |
Output is correct |
| 11 |
Correct |
5 ms |
440 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
5 ms |
344 KB |
Output is correct |
| 14 |
Correct |
8 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 |
5 ms |
344 KB |
Output is correct |
| 19 |
Correct |
9 ms |
344 KB |
Output is correct |
| 20 |
Correct |
5 ms |
444 KB |
Output is correct |
| 21 |
Correct |
8 ms |
344 KB |
Output is correct |
| 22 |
Correct |
7 ms |
344 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 |
10 ms |
440 KB |
Output is correct |
| 27 |
Correct |
9 ms |
344 KB |
Output is correct |
| 28 |
Correct |
11 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 |
9 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 |
9 ms |
344 KB |
Output is correct |
| 35 |
Correct |
13 ms |
344 KB |
Output is correct |
| 36 |
Correct |
13 ms |
344 KB |
Output is correct |
| 37 |
Correct |
8 ms |
344 KB |
Output is correct |
| 38 |
Correct |
11 ms |
344 KB |
Output is correct |
| 39 |
Correct |
11 ms |
344 KB |
Output is correct |
| 40 |
Correct |
6 ms |
344 KB |
Output is correct |
| 41 |
Correct |
9 ms |
344 KB |
Output is correct |
| 42 |
Correct |
9 ms |
344 KB |
Output is correct |
| 43 |
Correct |
6 ms |
344 KB |
Output is correct |
| 44 |
Correct |
5 ms |
600 KB |
Output is correct |
| 45 |
Correct |
6 ms |
344 KB |
Output is correct |
| 46 |
Correct |
4 ms |
344 KB |
Output is correct |
| 47 |
Partially correct |
7 ms |
596 KB |
Output is partially correct |
| 48 |
Partially correct |
10 ms |
344 KB |
Output is partially correct |
| 49 |
Partially correct |
6 ms |
344 KB |
Output is partially correct |
| 50 |
Partially correct |
11 ms |
344 KB |
Output is partially correct |
| 51 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 52 |
Partially correct |
12 ms |
344 KB |
Output is partially correct |
| 53 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
| 54 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 55 |
Partially correct |
7 ms |
344 KB |
Output is partially correct |
| 56 |
Partially correct |
9 ms |
600 KB |
Output is partially correct |
| 57 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
| 58 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 59 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 60 |
Partially correct |
6 ms |
344 KB |
Output is partially correct |
| 61 |
Partially correct |
6 ms |
344 KB |
Output is partially correct |
| 62 |
Correct |
7 ms |
344 KB |
Output is correct |
| 63 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 64 |
Partially correct |
11 ms |
464 KB |
Output is partially correct |
| 65 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 66 |
Partially correct |
12 ms |
600 KB |
Output is partially correct |
| 67 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
| 68 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 69 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 70 |
Partially correct |
13 ms |
1112 KB |
Output is partially correct |
| 71 |
Partially correct |
9 ms |
456 KB |
Output is partially correct |
| 72 |
Partially correct |
11 ms |
456 KB |
Output is partially correct |
| 73 |
Partially correct |
9 ms |
460 KB |
Output is partially correct |
| 74 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 75 |
Partially correct |
8 ms |
448 KB |
Output is partially correct |
| 76 |
Partially correct |
12 ms |
452 KB |
Output is partially correct |
| 77 |
Partially correct |
9 ms |
444 KB |
Output is partially correct |
| 78 |
Partially correct |
9 ms |
344 KB |
Output is partially correct |
| 79 |
Partially correct |
11 ms |
344 KB |
Output is partially correct |
| 80 |
Partially correct |
6 ms |
344 KB |
Output is partially correct |
| 81 |
Partially correct |
7 ms |
448 KB |
Output is partially correct |
| 82 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
