#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
vector <int> longest_trip(int N, int D){
vector <int> a,b;
int idx[N];
iota(idx,idx+N,0);
//shuffle(idx,idx+N,default_random_engine(chrono::steady_clock::now().time_since_epoch().count()));
a.push_back(idx[0]);
b.push_back(idx[1]);
int ch=0;
for (int j=2;j<N;j++){
int i=idx[j];
if (are_connected({a.back()},{i})){
a.push_back(i);
ch=0;
continue;
}
if (ch||are_connected({b.back()},{i})){
b.push_back(i);
ch=1;
continue;
}
reverse(b.begin(),b.end());
for (int i:b)
a.push_back(i);
b={i};
}
if (a.size()<b.size())
swap(a,b);
if (!are_connected(a,b))
return a;
vector <int> x={0,a.size()-1},y={0,b.size()-1};
for (int i:x)
for (int j:y)
if (are_connected({a[i]},{b[j]})){
if (!i)
reverse(a.begin(),a.end());
if (j)
reverse(b.begin(),b.end());
for (int k:b)
a.push_back(k);
return a;
}
int l=0,r=b.size()-1,i=-1;
while (l<=r){
int mid=(l+r)>>1;
vector <int> tmp;
for (int i=0;i<=mid;i++)
tmp.push_back(b[i]);
if (are_connected(a,tmp)){
i=mid;
r=mid-1;
}
else
l=mid+1;
}
l=0,r=a.size()-1;
int j=-1;
while (l<=r){
int mid=(l+r)>>1;
vector <int> tmp;
for (int i=0;i<=mid;i++)
tmp.push_back(a[i]);
if (are_connected(tmp,{b[i]})){
j=mid;
r=mid-1;
}
else
l=mid+1;
}
vector <int> c;
for (int k=(j+1)%a.size();c.size()<a.size();k=(k+1)%a.size())
c.push_back(a[k]);
for (int k=i;c.size()<a.size()+b.size();k=(k+1)%b.size())
c.push_back(b[k]);
return c;
}
Compilation message
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:33:31: warning: narrowing conversion of '(a.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
33 | vector <int> x={0,a.size()-1},y={0,b.size()-1};
| ~~~~~~~~^~
longesttrip.cpp:33:31: warning: narrowing conversion of '(a.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
longesttrip.cpp:33:48: warning: narrowing conversion of '(b.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
33 | vector <int> x={0,a.size()-1},y={0,b.size()-1};
| ~~~~~~~~^~
longesttrip.cpp:33:48: warning: narrowing conversion of '(b.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
| # |
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 |
7 ms |
344 KB |
Output is correct |
| 2 |
Correct |
8 ms |
344 KB |
Output is correct |
| 3 |
Correct |
5 ms |
388 KB |
Output is correct |
| 4 |
Correct |
6 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
344 KB |
Output is correct |
| 2 |
Correct |
5 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 |
608 KB |
Output is correct |
| 6 |
Correct |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
344 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
4 ms |
600 KB |
Output is correct |
| 10 |
Correct |
5 ms |
600 KB |
Output is correct |
| 11 |
Correct |
4 ms |
344 KB |
Output is correct |
| 12 |
Correct |
4 ms |
344 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 |
5 ms |
344 KB |
Output is correct |
| 3 |
Correct |
5 ms |
344 KB |
Output is correct |
| 4 |
Correct |
4 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 |
6 ms |
344 KB |
Output is correct |
| 8 |
Correct |
4 ms |
344 KB |
Output is correct |
| 9 |
Correct |
4 ms |
600 KB |
Output is correct |
| 10 |
Correct |
4 ms |
344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
600 KB |
Output is correct |
| 12 |
Correct |
6 ms |
600 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
344 KB |
Output is correct |
| 16 |
Correct |
7 ms |
344 KB |
Output is correct |
| 17 |
Correct |
5 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 |
5 ms |
344 KB |
Output is correct |
| 22 |
Correct |
5 ms |
600 KB |
Output is correct |
| 23 |
Correct |
6 ms |
600 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
6 ms |
344 KB |
Output is correct |
| 26 |
Correct |
8 ms |
344 KB |
Output is correct |
| 27 |
Correct |
5 ms |
412 KB |
Output is correct |
| 28 |
Correct |
5 ms |
344 KB |
Output is correct |
| 29 |
Correct |
5 ms |
344 KB |
Output is correct |
| 30 |
Correct |
4 ms |
344 KB |
Output is correct |
| 31 |
Correct |
5 ms |
344 KB |
Output is correct |
| 32 |
Correct |
5 ms |
344 KB |
Output is correct |
| 33 |
Correct |
5 ms |
340 KB |
Output is correct |
| 34 |
Correct |
4 ms |
344 KB |
Output is correct |
| 35 |
Correct |
5 ms |
344 KB |
Output is correct |
| 36 |
Correct |
4 ms |
600 KB |
Output is correct |
| 37 |
Correct |
5 ms |
344 KB |
Output is correct |
| 38 |
Correct |
5 ms |
344 KB |
Output is correct |
| 39 |
Correct |
5 ms |
344 KB |
Output is correct |
| 40 |
Correct |
5 ms |
600 KB |
Output is correct |
| 41 |
Correct |
5 ms |
344 KB |
Output is correct |
| 42 |
Correct |
5 ms |
344 KB |
Output is correct |
| 43 |
Correct |
5 ms |
344 KB |
Output is correct |
| 44 |
Correct |
5 ms |
344 KB |
Output is correct |
| 45 |
Correct |
10 ms |
344 KB |
Output is correct |
| 46 |
Correct |
10 ms |
344 KB |
Output is correct |
| 47 |
Correct |
8 ms |
344 KB |
Output is correct |
| 48 |
Correct |
8 ms |
344 KB |
Output is correct |
| 49 |
Correct |
9 ms |
344 KB |
Output is correct |
| 50 |
Correct |
5 ms |
432 KB |
Output is correct |
| 51 |
Correct |
6 ms |
436 KB |
Output is correct |
| 52 |
Correct |
6 ms |
344 KB |
Output is correct |
| 53 |
Correct |
5 ms |
344 KB |
Output is correct |
| 54 |
Correct |
5 ms |
344 KB |
Output is correct |
| 55 |
Correct |
5 ms |
344 KB |
Output is correct |
| 56 |
Correct |
5 ms |
604 KB |
Output is correct |
| 57 |
Correct |
5 ms |
440 KB |
Output is correct |
| 58 |
Correct |
6 ms |
444 KB |
Output is correct |
| 59 |
Correct |
6 ms |
448 KB |
Output is correct |
| 60 |
Correct |
6 ms |
440 KB |
Output is correct |
| 61 |
Correct |
6 ms |
612 KB |
Output is correct |
| 62 |
Correct |
7 ms |
436 KB |
Output is correct |
| 63 |
Correct |
7 ms |
596 KB |
Output is correct |
| 64 |
Correct |
6 ms |
448 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 |
5 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
600 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 |
4 ms |
600 KB |
Output is correct |
| 10 |
Correct |
4 ms |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
852 KB |
Output is correct |
| 12 |
Correct |
4 ms |
344 KB |
Output is correct |
| 13 |
Correct |
5 ms |
344 KB |
Output is correct |
| 14 |
Correct |
7 ms |
344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
344 KB |
Output is correct |
| 16 |
Correct |
6 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 |
5 ms |
600 KB |
Output is correct |
| 20 |
Correct |
5 ms |
344 KB |
Output is correct |
| 21 |
Correct |
5 ms |
344 KB |
Output is correct |
| 22 |
Correct |
6 ms |
344 KB |
Output is correct |
| 23 |
Correct |
5 ms |
344 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
5 ms |
344 KB |
Output is correct |
| 26 |
Correct |
5 ms |
344 KB |
Output is correct |
| 27 |
Correct |
5 ms |
344 KB |
Output is correct |
| 28 |
Correct |
5 ms |
344 KB |
Output is correct |
| 29 |
Correct |
4 ms |
596 KB |
Output is correct |
| 30 |
Correct |
4 ms |
344 KB |
Output is correct |
| 31 |
Correct |
5 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 |
7 ms |
344 KB |
Output is correct |
| 35 |
Correct |
9 ms |
344 KB |
Output is correct |
| 36 |
Correct |
8 ms |
344 KB |
Output is correct |
| 37 |
Correct |
5 ms |
600 KB |
Output is correct |
| 38 |
Correct |
6 ms |
436 KB |
Output is correct |
| 39 |
Correct |
7 ms |
344 KB |
Output is correct |
| 40 |
Correct |
5 ms |
600 KB |
Output is correct |
| 41 |
Correct |
5 ms |
600 KB |
Output is correct |
| 42 |
Correct |
6 ms |
436 KB |
Output is correct |
| 43 |
Correct |
5 ms |
344 KB |
Output is correct |
| 44 |
Correct |
5 ms |
344 KB |
Output is correct |
| 45 |
Correct |
5 ms |
440 KB |
Output is correct |
| 46 |
Correct |
5 ms |
344 KB |
Output is correct |
| 47 |
Correct |
4 ms |
344 KB |
Output is correct |
| 48 |
Correct |
5 ms |
344 KB |
Output is correct |
| 49 |
Correct |
6 ms |
344 KB |
Output is correct |
| 50 |
Correct |
5 ms |
1012 KB |
Output is correct |
| 51 |
Correct |
5 ms |
344 KB |
Output is correct |
| 52 |
Correct |
7 ms |
344 KB |
Output is correct |
| 53 |
Correct |
6 ms |
412 KB |
Output is correct |
| 54 |
Correct |
5 ms |
344 KB |
Output is correct |
| 55 |
Correct |
6 ms |
596 KB |
Output is correct |
| 56 |
Correct |
5 ms |
600 KB |
Output is correct |
| 57 |
Correct |
5 ms |
344 KB |
Output is correct |
| 58 |
Correct |
5 ms |
344 KB |
Output is correct |
| 59 |
Correct |
6 ms |
344 KB |
Output is correct |
| 60 |
Correct |
5 ms |
344 KB |
Output is correct |
| 61 |
Correct |
5 ms |
600 KB |
Output is correct |
| 62 |
Correct |
6 ms |
604 KB |
Output is correct |
| 63 |
Correct |
5 ms |
440 KB |
Output is correct |
| 64 |
Correct |
6 ms |
440 KB |
Output is correct |
| 65 |
Correct |
9 ms |
444 KB |
Output is correct |
| 66 |
Correct |
6 ms |
444 KB |
Output is correct |
| 67 |
Correct |
7 ms |
856 KB |
Output is correct |
| 68 |
Correct |
7 ms |
604 KB |
Output is correct |
| 69 |
Correct |
7 ms |
436 KB |
Output is correct |
| 70 |
Correct |
6 ms |
604 KB |
Output is correct |
| 71 |
Correct |
6 ms |
856 KB |
Output is correct |
| 72 |
Correct |
6 ms |
604 KB |
Output is correct |
| 73 |
Correct |
6 ms |
432 KB |
Output is correct |
| 74 |
Correct |
6 ms |
604 KB |
Output is correct |
| 75 |
Correct |
7 ms |
604 KB |
Output is correct |
| 76 |
Correct |
6 ms |
600 KB |
Output is correct |
| 77 |
Correct |
5 ms |
444 KB |
Output is correct |
| 78 |
Correct |
6 ms |
696 KB |
Output is correct |
| 79 |
Correct |
6 ms |
604 KB |
Output is correct |
| 80 |
Correct |
6 ms |
696 KB |
Output is correct |
| 81 |
Correct |
6 ms |
604 KB |
Output is correct |
| 82 |
Correct |
6 ms |
436 KB |
Output is correct |
