#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> perm;
bool ask(vector<int> a,vector<int> b){
for(auto &x:a)x=perm[x];
for(auto &x:b)x=perm[x];
return are_connected(a,b);
}
int bsearch(vector<int> vec,vector<int> fixed){
int l=0,r=vec.size()-1;
while(l<r){
int m=(l+r)/2;
vector<int> res;
for(int i=l;i<=m;i++)res.emplace_back(vec[i]);
if(ask(res,fixed))r=m;
else l=m+1;
}
return l;
}
vector<int> longest_trip(int N, int D){
perm.resize(N);
iota(perm.begin(),perm.end(),0);
if(D==3)return perm;
if(D==2){
deque<int> path;
for(int i=0;i<3;i++)path.emplace_back(i);
for(int i=1;i<3;i++){
if(!ask({i-1},{i})){
swap(path[0],path[i-1]);
swap(path[2],path[i]);
break;
}
}
for(int i=3;i<N;i++){
if(ask({i},{path[0]})){
path.emplace_front(i);
}else{
path.emplace_back(i);
}
}
vector<int> ans;
for(auto x:path)ans.emplace_back(x);
return ans;
}
shuffle(perm.begin(),perm.end(),mt19937_64());
vector<int> path[2];
for(int i=0;i<2;i++)path[i].emplace_back(i);
for(int i=2;i<N;i++){
if(ask({i},{path[0].back()})){
path[0].emplace_back(i);
continue;
}
if(ask({i},{path[1].back()})){
path[1].emplace_back(i);
continue;
}
while(!path[1].empty()){
path[0].emplace_back(path[1].back());
path[1].pop_back();
}
path[1].emplace_back(i);
}
if(path[0].size()<path[1].size())swap(path[0],path[1]);
vector<int> ans;
if(!ask(path[0],path[1])){
ans=path[0];
}else if(ask({path[0][0]},{path[1][0]})){
reverse(path[1].begin(),path[1].end());
ans=path[1];
for(auto x:path[0])ans.emplace_back(x);
}else if(ask({path[0][0]},{path[1].back()})){
ans=path[1];
for(auto x:path[0])ans.emplace_back(x);
}else if(ask({path[0].back()},{path[1][0]})){
ans=path[0];
for(auto x:path[1])ans.emplace_back(x);
}else if(ask({path[0].back()},{path[1].back()})){
ans=path[0];
reverse(path[1].begin(),path[1].end());
for(auto x:path[1])ans.emplace_back(x);
}else{
int id0=bsearch(path[0],path[1]);
int id1=bsearch(path[1],{path[0][id0]});
for(int i=0;i<path[0].size();i++)ans.emplace_back(path[0][(id0+i+1)%path[0].size()]);
for(int i=0;i<path[1].size();i++)ans.emplace_back(path[1][(id1+i)%path[1].size()]);
}
for(auto &x:ans)x=perm[x];
return ans;
}
Compilation message
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
90 | for(int i=0;i<path[0].size();i++)ans.emplace_back(path[0][(id0+i+1)%path[0].size()]);
| ~^~~~~~~~~~~~~~~
longesttrip.cpp:91:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
91 | for(int i=0;i<path[1].size();i++)ans.emplace_back(path[1][(id1+i)%path[1].size()]);
| ~^~~~~~~~~~~~~~~
# |
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 |
3 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
344 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 |
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 |
5 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 |
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 |
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 |
344 KB |
Output is correct |
4 |
Correct |
4 ms |
344 KB |
Output is correct |
5 |
Correct |
5 ms |
344 KB |
Output is correct |
6 |
Correct |
9 ms |
344 KB |
Output is correct |
7 |
Correct |
6 ms |
344 KB |
Output is correct |
8 |
Correct |
5 ms |
600 KB |
Output is correct |
9 |
Correct |
5 ms |
344 KB |
Output is correct |
10 |
Correct |
5 ms |
440 KB |
Output is correct |
11 |
Correct |
4 ms |
436 KB |
Output is correct |
12 |
Correct |
4 ms |
440 KB |
Output is correct |
13 |
Correct |
8 ms |
444 KB |
Output is correct |
14 |
Correct |
7 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 |
344 KB |
Output is correct |
18 |
Correct |
6 ms |
600 KB |
Output is correct |
19 |
Correct |
6 ms |
344 KB |
Output is correct |
20 |
Correct |
5 ms |
344 KB |
Output is correct |
21 |
Correct |
6 ms |
856 KB |
Output is correct |
22 |
Correct |
6 ms |
700 KB |
Output is correct |
23 |
Correct |
5 ms |
436 KB |
Output is correct |
24 |
Correct |
5 ms |
436 KB |
Output is correct |
25 |
Correct |
7 ms |
344 KB |
Output is correct |
26 |
Correct |
7 ms |
344 KB |
Output is correct |
27 |
Correct |
8 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 |
5 ms |
344 KB |
Output is correct |
31 |
Correct |
6 ms |
344 KB |
Output is correct |
32 |
Correct |
6 ms |
344 KB |
Output is correct |
33 |
Correct |
5 ms |
344 KB |
Output is correct |
34 |
Correct |
5 ms |
344 KB |
Output is correct |
35 |
Correct |
6 ms |
344 KB |
Output is correct |
36 |
Correct |
6 ms |
344 KB |
Output is correct |
37 |
Correct |
4 ms |
344 KB |
Output is correct |
38 |
Correct |
5 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 |
6 ms |
344 KB |
Output is correct |
42 |
Correct |
7 ms |
504 KB |
Output is correct |
43 |
Correct |
6 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 |
9 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 |
7 ms |
344 KB |
Output is correct |
50 |
Correct |
5 ms |
436 KB |
Output is correct |
51 |
Correct |
9 ms |
432 KB |
Output is correct |
52 |
Correct |
8 ms |
440 KB |
Output is correct |
53 |
Correct |
6 ms |
600 KB |
Output is correct |
54 |
Correct |
6 ms |
344 KB |
Output is correct |
55 |
Correct |
6 ms |
600 KB |
Output is correct |
56 |
Correct |
5 ms |
604 KB |
Output is correct |
57 |
Correct |
5 ms |
440 KB |
Output is correct |
58 |
Correct |
5 ms |
440 KB |
Output is correct |
59 |
Correct |
9 ms |
444 KB |
Output is correct |
60 |
Correct |
8 ms |
344 KB |
Output is correct |
61 |
Correct |
8 ms |
856 KB |
Output is correct |
62 |
Correct |
7 ms |
604 KB |
Output is correct |
63 |
Correct |
8 ms |
600 KB |
Output is correct |
64 |
Correct |
7 ms |
600 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
344 KB |
Output is correct |
2 |
Correct |
8 ms |
344 KB |
Output is correct |
3 |
Correct |
5 ms |
344 KB |
Output is correct |
4 |
Correct |
4 ms |
436 KB |
Output is correct |
5 |
Correct |
6 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 |
5 ms |
600 KB |
Output is correct |
9 |
Correct |
6 ms |
600 KB |
Output is correct |
10 |
Correct |
5 ms |
436 KB |
Output is correct |
11 |
Correct |
5 ms |
432 KB |
Output is correct |
12 |
Correct |
5 ms |
440 KB |
Output is correct |
13 |
Correct |
5 ms |
856 KB |
Output is correct |
14 |
Correct |
12 ms |
344 KB |
Output is correct |
15 |
Correct |
9 ms |
344 KB |
Output is correct |
16 |
Correct |
9 ms |
344 KB |
Output is correct |
17 |
Correct |
7 ms |
344 KB |
Output is correct |
18 |
Correct |
9 ms |
600 KB |
Output is correct |
19 |
Correct |
6 ms |
432 KB |
Output is correct |
20 |
Correct |
8 ms |
600 KB |
Output is correct |
21 |
Correct |
8 ms |
344 KB |
Output is correct |
22 |
Correct |
9 ms |
344 KB |
Output is correct |
23 |
Correct |
10 ms |
344 KB |
Output is correct |
24 |
Correct |
7 ms |
344 KB |
Output is correct |
25 |
Correct |
10 ms |
344 KB |
Output is correct |
26 |
Correct |
5 ms |
344 KB |
Output is correct |
27 |
Correct |
7 ms |
344 KB |
Output is correct |
28 |
Correct |
7 ms |
344 KB |
Output is correct |
29 |
Correct |
5 ms |
344 KB |
Output is correct |
30 |
Correct |
5 ms |
600 KB |
Output is correct |
31 |
Correct |
6 ms |
344 KB |
Output is correct |
32 |
Correct |
9 ms |
344 KB |
Output is correct |
33 |
Correct |
10 ms |
344 KB |
Output is correct |
34 |
Correct |
8 ms |
436 KB |
Output is correct |
35 |
Correct |
10 ms |
344 KB |
Output is correct |
36 |
Correct |
10 ms |
344 KB |
Output is correct |
37 |
Correct |
7 ms |
504 KB |
Output is correct |
38 |
Correct |
10 ms |
600 KB |
Output is correct |
39 |
Correct |
9 ms |
600 KB |
Output is correct |
40 |
Correct |
6 ms |
600 KB |
Output is correct |
41 |
Correct |
8 ms |
344 KB |
Output is correct |
42 |
Correct |
9 ms |
344 KB |
Output is correct |
43 |
Correct |
7 ms |
856 KB |
Output is correct |
44 |
Correct |
7 ms |
700 KB |
Output is correct |
45 |
Correct |
8 ms |
856 KB |
Output is correct |
46 |
Correct |
8 ms |
604 KB |
Output is correct |
47 |
Correct |
7 ms |
600 KB |
Output is correct |
48 |
Correct |
7 ms |
600 KB |
Output is correct |
49 |
Correct |
6 ms |
344 KB |
Output is correct |
50 |
Partially correct |
8 ms |
600 KB |
Output is partially correct |
51 |
Correct |
8 ms |
600 KB |
Output is correct |
52 |
Correct |
7 ms |
344 KB |
Output is correct |
53 |
Correct |
9 ms |
600 KB |
Output is correct |
54 |
Correct |
7 ms |
344 KB |
Output is correct |
55 |
Correct |
10 ms |
344 KB |
Output is correct |
56 |
Correct |
5 ms |
600 KB |
Output is correct |
57 |
Partially correct |
7 ms |
600 KB |
Output is partially correct |
58 |
Partially correct |
10 ms |
604 KB |
Output is partially correct |
59 |
Partially correct |
12 ms |
856 KB |
Output is partially correct |
60 |
Correct |
14 ms |
344 KB |
Output is correct |
61 |
Correct |
8 ms |
344 KB |
Output is correct |
62 |
Correct |
8 ms |
856 KB |
Output is correct |
63 |
Correct |
7 ms |
604 KB |
Output is correct |
64 |
Correct |
10 ms |
604 KB |
Output is correct |
65 |
Partially correct |
11 ms |
600 KB |
Output is partially correct |
66 |
Partially correct |
12 ms |
600 KB |
Output is partially correct |
67 |
Partially correct |
10 ms |
760 KB |
Output is partially correct |
68 |
Partially correct |
10 ms |
600 KB |
Output is partially correct |
69 |
Partially correct |
12 ms |
600 KB |
Output is partially correct |
70 |
Partially correct |
10 ms |
692 KB |
Output is partially correct |
71 |
Partially correct |
8 ms |
344 KB |
Output is partially correct |
72 |
Correct |
9 ms |
600 KB |
Output is correct |
73 |
Correct |
11 ms |
600 KB |
Output is correct |
74 |
Partially correct |
10 ms |
852 KB |
Output is partially correct |
75 |
Partially correct |
9 ms |
440 KB |
Output is partially correct |
76 |
Partially correct |
11 ms |
600 KB |
Output is partially correct |
77 |
Correct |
9 ms |
752 KB |
Output is correct |
78 |
Correct |
6 ms |
436 KB |
Output is correct |
79 |
Partially correct |
9 ms |
604 KB |
Output is partially correct |
80 |
Partially correct |
11 ms |
772 KB |
Output is partially correct |
81 |
Partially correct |
7 ms |
444 KB |
Output is partially correct |
82 |
Partially correct |
10 ms |
440 KB |
Output is partially correct |