#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng(15645869);
std::vector<int> longest_trip(int N, int D)
{
vector<int>x, y;
vector<int>p;
for(int i=0;i<N;i++){
p.push_back(i);
}
shuffle(p.begin(),p.end(),rng);
for(int i:p){
if(x.size()==0){
x={i};
continue;
}
if(y.size()==0){
if(are_connected({i}, {x[0]})){
x.insert(x.begin(),i);
continue;
}
if (are_connected({i}, {x.back()})){
x.push_back(i);
continue;
}
if(!are_connected({i}, x)){
y={i};
continue;
}
int lo=1;
int hi=x.size()-2;
while(lo<hi){
int m=(lo+hi)/2;
vector<int>z;
for(int i=lo;i<=m;i++){
z.push_back(x[i]);
}
if(are_connected(z, {i})){
hi=m;
} else{
lo=m+1;
}
}
vector<int>z;
for(int i=lo+1;i<x.size();i++){
z.push_back(x[i]);
}
for(int i=0;i<=lo;i++){
z.push_back(x[i]);
}
z.push_back(i);
x=z;
continue;
}
if(rng()%2==0){
swap(x,y);
}
if(!are_connected(x,{i})){
y.push_back(i);
continue;
}
if(!are_connected(y,{i})){
x.push_back(i);
continue;
}
int i0=0;
int j0=0;
if(!are_connected({x[0]},{i})){
int lo=1;
int hi=x.size()-1;
while(lo<hi){
int m=(lo+hi)/2;
vector<int>z;
for(int i=lo;i<=m;i++){
z.push_back(x[i]);
}
if(are_connected(z, {i})){
hi=m;
} else{
lo=m+1;
}
}
i0=lo;
} else {
int lo=0;
int hi=y.size()-1;
while(lo<hi){
int m=(lo+hi)/2;
vector<int>z;
for(int i=lo;i<=m;i++){
z.push_back(y[i]);
}
if(are_connected(z, {i})){
hi=m;
} else{
lo=m+1;
}
}
j0=lo;
}
swap(x[i0], x.back());
swap(y[j0], y[0]);
x.push_back(i);
for(int i: y){
x.push_back(i);
}
y={};
}
if(x.size()>y.size()){
return x;
} else{
return y;
}
}
Compilation message
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:47:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | for(int i=lo+1;i<x.size();i++){
| ~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
596 KB |
Output is correct |
| 2 |
Correct |
2 ms |
600 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 |
344 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
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 |
7 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 |
4 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 |
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 |
344 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 |
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 |
4 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 |
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 |
4 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 |
9 ms |
344 KB |
Output is correct |
| 15 |
Correct |
9 ms |
344 KB |
Output is correct |
| 16 |
Correct |
10 ms |
344 KB |
Output is correct |
| 17 |
Correct |
7 ms |
344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
600 KB |
Output is correct |
| 19 |
Correct |
6 ms |
856 KB |
Output is correct |
| 20 |
Correct |
6 ms |
440 KB |
Output is correct |
| 21 |
Correct |
8 ms |
448 KB |
Output is correct |
| 22 |
Correct |
6 ms |
700 KB |
Output is correct |
| 23 |
Correct |
6 ms |
704 KB |
Output is correct |
| 24 |
Correct |
6 ms |
604 KB |
Output is correct |
| 25 |
Correct |
8 ms |
344 KB |
Output is correct |
| 26 |
Correct |
8 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 |
8 ms |
344 KB |
Output is correct |
| 30 |
Correct |
6 ms |
444 KB |
Output is correct |
| 31 |
Correct |
9 ms |
600 KB |
Output is correct |
| 32 |
Correct |
10 ms |
344 KB |
Output is correct |
| 33 |
Correct |
7 ms |
440 KB |
Output is correct |
| 34 |
Correct |
9 ms |
444 KB |
Output is correct |
| 35 |
Correct |
9 ms |
600 KB |
Output is correct |
| 36 |
Correct |
7 ms |
468 KB |
Output is correct |
| 37 |
Correct |
12 ms |
468 KB |
Output is correct |
| 38 |
Correct |
12 ms |
716 KB |
Output is correct |
| 39 |
Correct |
15 ms |
612 KB |
Output is correct |
| 40 |
Correct |
15 ms |
704 KB |
Output is correct |
| 41 |
Correct |
14 ms |
448 KB |
Output is correct |
| 42 |
Correct |
13 ms |
448 KB |
Output is correct |
| 43 |
Correct |
15 ms |
448 KB |
Output is correct |
| 44 |
Correct |
14 ms |
452 KB |
Output is correct |
| 45 |
Correct |
9 ms |
344 KB |
Output is correct |
| 46 |
Correct |
9 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 |
344 KB |
Output is correct |
| 50 |
Correct |
5 ms |
640 KB |
Output is correct |
| 51 |
Correct |
8 ms |
440 KB |
Output is correct |
| 52 |
Correct |
8 ms |
344 KB |
Output is correct |
| 53 |
Correct |
7 ms |
444 KB |
Output is correct |
| 54 |
Correct |
7 ms |
440 KB |
Output is correct |
| 55 |
Correct |
7 ms |
444 KB |
Output is correct |
| 56 |
Correct |
6 ms |
876 KB |
Output is correct |
| 57 |
Correct |
10 ms |
712 KB |
Output is correct |
| 58 |
Correct |
10 ms |
708 KB |
Output is correct |
| 59 |
Correct |
11 ms |
956 KB |
Output is correct |
| 60 |
Correct |
10 ms |
860 KB |
Output is correct |
| 61 |
Correct |
13 ms |
444 KB |
Output is correct |
| 62 |
Correct |
13 ms |
448 KB |
Output is correct |
| 63 |
Correct |
11 ms |
444 KB |
Output is correct |
| 64 |
Correct |
11 ms |
436 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 |
5 ms |
416 KB |
Output is correct |
| 4 |
Correct |
4 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 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 |
344 KB |
Output is correct |
| 9 |
Correct |
5 ms |
504 KB |
Output is correct |
| 10 |
Correct |
5 ms |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
344 KB |
Output is correct |
| 13 |
Correct |
5 ms |
344 KB |
Output is correct |
| 14 |
Correct |
9 ms |
344 KB |
Output is correct |
| 15 |
Correct |
9 ms |
344 KB |
Output is correct |
| 16 |
Correct |
7 ms |
344 KB |
Output is correct |
| 17 |
Correct |
7 ms |
344 KB |
Output is correct |
| 18 |
Correct |
7 ms |
436 KB |
Output is correct |
| 19 |
Correct |
6 ms |
600 KB |
Output is correct |
| 20 |
Correct |
6 ms |
600 KB |
Output is correct |
| 21 |
Correct |
9 ms |
348 KB |
Output is correct |
| 22 |
Correct |
7 ms |
344 KB |
Output is correct |
| 23 |
Correct |
7 ms |
344 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
7 ms |
440 KB |
Output is correct |
| 27 |
Correct |
8 ms |
436 KB |
Output is correct |
| 28 |
Correct |
9 ms |
344 KB |
Output is correct |
| 29 |
Correct |
7 ms |
440 KB |
Output is correct |
| 30 |
Correct |
8 ms |
444 KB |
Output is correct |
| 31 |
Correct |
8 ms |
600 KB |
Output is correct |
| 32 |
Correct |
10 ms |
540 KB |
Output is correct |
| 33 |
Correct |
10 ms |
344 KB |
Output is correct |
| 34 |
Correct |
7 ms |
344 KB |
Output is correct |
| 35 |
Correct |
9 ms |
344 KB |
Output is correct |
| 36 |
Correct |
9 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
440 KB |
Output is correct |
| 38 |
Correct |
8 ms |
440 KB |
Output is correct |
| 39 |
Correct |
8 ms |
344 KB |
Output is correct |
| 40 |
Correct |
6 ms |
440 KB |
Output is correct |
| 41 |
Correct |
7 ms |
440 KB |
Output is correct |
| 42 |
Correct |
8 ms |
440 KB |
Output is correct |
| 43 |
Correct |
6 ms |
452 KB |
Output is correct |
| 44 |
Correct |
7 ms |
700 KB |
Output is correct |
| 45 |
Correct |
7 ms |
860 KB |
Output is correct |
| 46 |
Correct |
5 ms |
700 KB |
Output is correct |
| 47 |
Correct |
7 ms |
460 KB |
Output is correct |
| 48 |
Correct |
12 ms |
972 KB |
Output is correct |
| 49 |
Correct |
13 ms |
720 KB |
Output is correct |
| 50 |
Correct |
14 ms |
704 KB |
Output is correct |
| 51 |
Correct |
16 ms |
448 KB |
Output is correct |
| 52 |
Correct |
13 ms |
444 KB |
Output is correct |
| 53 |
Correct |
14 ms |
600 KB |
Output is correct |
| 54 |
Correct |
13 ms |
604 KB |
Output is correct |
| 55 |
Correct |
14 ms |
444 KB |
Output is correct |
| 56 |
Correct |
12 ms |
624 KB |
Output is correct |
| 57 |
Correct |
13 ms |
720 KB |
Output is correct |
| 58 |
Partially correct |
13 ms |
708 KB |
Output is partially correct |
| 59 |
Correct |
14 ms |
708 KB |
Output is correct |
| 60 |
Correct |
14 ms |
700 KB |
Output is correct |
| 61 |
Correct |
16 ms |
604 KB |
Output is correct |
| 62 |
Correct |
6 ms |
620 KB |
Output is correct |
| 63 |
Partially correct |
10 ms |
708 KB |
Output is partially correct |
| 64 |
Partially correct |
11 ms |
452 KB |
Output is partially correct |
| 65 |
Partially correct |
13 ms |
712 KB |
Output is partially correct |
| 66 |
Partially correct |
10 ms |
452 KB |
Output is partially correct |
| 67 |
Partially correct |
11 ms |
448 KB |
Output is partially correct |
| 68 |
Partially correct |
14 ms |
704 KB |
Output is partially correct |
| 69 |
Correct |
13 ms |
448 KB |
Output is correct |
| 70 |
Partially correct |
10 ms |
440 KB |
Output is partially correct |
| 71 |
Partially correct |
10 ms |
616 KB |
Output is partially correct |
| 72 |
Partially correct |
12 ms |
620 KB |
Output is partially correct |
| 73 |
Partially correct |
9 ms |
460 KB |
Output is partially correct |
| 74 |
Partially correct |
10 ms |
700 KB |
Output is partially correct |
| 75 |
Correct |
11 ms |
444 KB |
Output is correct |
| 76 |
Correct |
10 ms |
448 KB |
Output is correct |
| 77 |
Partially correct |
10 ms |
456 KB |
Output is partially correct |
| 78 |
Partially correct |
9 ms |
460 KB |
Output is partially correct |
| 79 |
Correct |
8 ms |
444 KB |
Output is correct |
| 80 |
Partially correct |
11 ms |
452 KB |
Output is partially correct |
| 81 |
Partially correct |
13 ms |
856 KB |
Output is partially correct |
| 82 |
Correct |
11 ms |
452 KB |
Output is correct |
