#include <bits/stdc++.h>
using namespace std;
#define ALL(x) begin(x),end(x)
#define SIZE(x) (int)x.size()
#define forn(i,n) for(int i=0;i<int(n);i++)
#define forsn(i,s,n) for(int i=int(s);i<int(n);i++)
#define pb push_back
typedef vector<int> vi;
bool are_connected(vi A, vi B);
vi longest_trip(int N, int D) {
(void)D;
queue<vi> q;
vi P;
forn(i,N) P.pb(i);
srand(time(0));
random_shuffle(ALL(P));
forn(i,N) q.push({P[i]});
auto plop = [&](){
vi x = q.front();
q.pop();
return x;
};
while(SIZE(q)>=3) {
vi a = plop(),
b = plop(),
c = plop();
if(are_connected({a.back()},{b.front()})) {
forn(i,SIZE(b)) a.pb(b[i]);
q.push(a), q.push(c);
} else if(are_connected({a.back()},{c.front()})) {
forn(i,SIZE(c)) a.pb(c[i]);
q.push(a), q.push(b);
} else {
reverse(ALL(b));
forn(i,SIZE(c)) b.pb(c[i]);
q.push(b), q.push(a);
}
}
vi a = plop(), b = plop();
if(SIZE(b)>SIZE(a)) swap(a,b);
if(b.empty() || !are_connected(a,b)) return a;
vi qa = {a.front()};
if(a.back() != qa.back()) qa.pb(a.back());
vi qb = {b.front()};
if(b.back() != qb.back()) qb.pb(b.back());
if(are_connected(qa, qb)) {
if(are_connected({a.back()}, {b.front()})) {
forn(i,SIZE(b)) a.pb(b[i]);
return a;
}
if(are_connected({b.back()}, {a.front()})) {
forn(i,SIZE(a)) b.pb(a[i]);
return b;
}
if(are_connected({a.front()},{b.front()})) {
reverse(ALL(a));
forn(i,SIZE(b)) a.pb(b[i]);
return a;
}
if(are_connected({a.back()}, {b.back()})) {
reverse(ALL(b));
forn(i,SIZE(b)) a.pb(b[i]);
return a;
}
}
int l=0, r=SIZE(a);
while(l+1<r) {
int m=(l+r)/2;
if(are_connected(b,vi(a.begin()+m,a.begin()+r))) l=m;
else r=m;
}
int i=l;
l=0, r=SIZE(b);
while(l+1<r) {
int m=(l+r)/2;
if(are_connected({a[i]},vi(b.begin()+m,b.begin()+r))) l=m;
else r=m;
}
int j=l;
vi ans;
forsn(p,j+1,SIZE(b)) ans.pb(b[p]);
forn(p,j+1) ans.pb(b[p]);
forsn(p,i,SIZE(a)) ans.pb(a[p]);
forn(p,i) ans.pb(a[p]);
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
2 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 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 |
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 |
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 |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
8 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 |
6 ms |
456 KB |
Output is correct |
| 11 |
Correct |
6 ms |
344 KB |
Output is correct |
| 12 |
Correct |
5 ms |
600 KB |
Output is correct |
| 13 |
Correct |
6 ms |
500 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 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 |
7 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 |
344 KB |
Output is correct |
| 11 |
Correct |
5 ms |
460 KB |
Output is correct |
| 12 |
Correct |
5 ms |
600 KB |
Output is correct |
| 13 |
Correct |
5 ms |
600 KB |
Output is correct |
| 14 |
Correct |
7 ms |
344 KB |
Output is correct |
| 15 |
Correct |
7 ms |
344 KB |
Output is correct |
| 16 |
Correct |
8 ms |
600 KB |
Output is correct |
| 17 |
Correct |
6 ms |
344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
440 KB |
Output is correct |
| 19 |
Correct |
5 ms |
344 KB |
Output is correct |
| 20 |
Correct |
6 ms |
600 KB |
Output is correct |
| 21 |
Correct |
5 ms |
872 KB |
Output is correct |
| 22 |
Correct |
6 ms |
868 KB |
Output is correct |
| 23 |
Correct |
5 ms |
612 KB |
Output is correct |
| 24 |
Correct |
5 ms |
968 KB |
Output is correct |
| 25 |
Correct |
6 ms |
340 KB |
Output is correct |
| 26 |
Correct |
10 ms |
344 KB |
Output is correct |
| 27 |
Correct |
7 ms |
344 KB |
Output is correct |
| 28 |
Correct |
6 ms |
344 KB |
Output is correct |
| 29 |
Correct |
7 ms |
344 KB |
Output is correct |
| 30 |
Correct |
5 ms |
444 KB |
Output is correct |
| 31 |
Correct |
7 ms |
444 KB |
Output is correct |
| 32 |
Correct |
7 ms |
444 KB |
Output is correct |
| 33 |
Correct |
5 ms |
444 KB |
Output is correct |
| 34 |
Correct |
6 ms |
612 KB |
Output is correct |
| 35 |
Correct |
7 ms |
956 KB |
Output is correct |
| 36 |
Correct |
5 ms |
716 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1120 KB |
Output is correct |
| 38 |
Correct |
7 ms |
872 KB |
Output is correct |
| 39 |
Correct |
7 ms |
868 KB |
Output is correct |
| 40 |
Correct |
7 ms |
872 KB |
Output is correct |
| 41 |
Correct |
8 ms |
612 KB |
Output is correct |
| 42 |
Correct |
7 ms |
464 KB |
Output is correct |
| 43 |
Correct |
7 ms |
868 KB |
Output is correct |
| 44 |
Correct |
7 ms |
716 KB |
Output is correct |
| 45 |
Correct |
9 ms |
344 KB |
Output is correct |
| 46 |
Correct |
11 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 |
6 ms |
692 KB |
Output is correct |
| 51 |
Correct |
7 ms |
696 KB |
Output is correct |
| 52 |
Correct |
11 ms |
688 KB |
Output is correct |
| 53 |
Correct |
5 ms |
600 KB |
Output is correct |
| 54 |
Correct |
5 ms |
600 KB |
Output is correct |
| 55 |
Correct |
6 ms |
856 KB |
Output is correct |
| 56 |
Correct |
5 ms |
612 KB |
Output is correct |
| 57 |
Correct |
6 ms |
1120 KB |
Output is correct |
| 58 |
Correct |
7 ms |
720 KB |
Output is correct |
| 59 |
Correct |
7 ms |
864 KB |
Output is correct |
| 60 |
Correct |
9 ms |
720 KB |
Output is correct |
| 61 |
Correct |
11 ms |
1144 KB |
Output is correct |
| 62 |
Correct |
9 ms |
868 KB |
Output is correct |
| 63 |
Correct |
9 ms |
468 KB |
Output is correct |
| 64 |
Correct |
8 ms |
868 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 |
6 ms |
344 KB |
Output is correct |
| 5 |
Correct |
5 ms |
596 KB |
Output is correct |
| 6 |
Correct |
10 ms |
344 KB |
Output is correct |
| 7 |
Correct |
7 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 |
5 ms |
460 KB |
Output is correct |
| 11 |
Correct |
5 ms |
344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
500 KB |
Output is correct |
| 13 |
Correct |
5 ms |
456 KB |
Output is correct |
| 14 |
Correct |
6 ms |
344 KB |
Output is correct |
| 15 |
Correct |
7 ms |
344 KB |
Output is correct |
| 16 |
Correct |
10 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 |
604 KB |
Output is correct |
| 20 |
Correct |
6 ms |
612 KB |
Output is correct |
| 21 |
Correct |
6 ms |
356 KB |
Output is correct |
| 22 |
Correct |
8 ms |
356 KB |
Output is correct |
| 23 |
Correct |
7 ms |
756 KB |
Output is correct |
| 24 |
Correct |
6 ms |
344 KB |
Output is correct |
| 25 |
Correct |
7 ms |
344 KB |
Output is correct |
| 26 |
Correct |
5 ms |
440 KB |
Output is correct |
| 27 |
Correct |
6 ms |
692 KB |
Output is correct |
| 28 |
Correct |
7 ms |
440 KB |
Output is correct |
| 29 |
Correct |
5 ms |
856 KB |
Output is correct |
| 30 |
Correct |
5 ms |
600 KB |
Output is correct |
| 31 |
Correct |
6 ms |
600 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 |
344 KB |
Output is correct |
| 35 |
Correct |
7 ms |
344 KB |
Output is correct |
| 36 |
Correct |
9 ms |
344 KB |
Output is correct |
| 37 |
Correct |
6 ms |
444 KB |
Output is correct |
| 38 |
Correct |
7 ms |
696 KB |
Output is correct |
| 39 |
Correct |
8 ms |
440 KB |
Output is correct |
| 40 |
Correct |
6 ms |
856 KB |
Output is correct |
| 41 |
Correct |
6 ms |
600 KB |
Output is correct |
| 42 |
Correct |
6 ms |
856 KB |
Output is correct |
| 43 |
Correct |
6 ms |
720 KB |
Output is correct |
| 44 |
Correct |
6 ms |
716 KB |
Output is correct |
| 45 |
Correct |
5 ms |
472 KB |
Output is correct |
| 46 |
Correct |
5 ms |
1124 KB |
Output is correct |
| 47 |
Correct |
5 ms |
720 KB |
Output is correct |
| 48 |
Correct |
6 ms |
1120 KB |
Output is correct |
| 49 |
Correct |
7 ms |
716 KB |
Output is correct |
| 50 |
Correct |
7 ms |
600 KB |
Output is correct |
| 51 |
Partially correct |
7 ms |
864 KB |
Output is partially correct |
| 52 |
Partially correct |
7 ms |
612 KB |
Output is partially correct |
| 53 |
Partially correct |
7 ms |
864 KB |
Output is partially correct |
| 54 |
Partially correct |
8 ms |
864 KB |
Output is partially correct |
| 55 |
Partially correct |
7 ms |
724 KB |
Output is partially correct |
| 56 |
Correct |
6 ms |
872 KB |
Output is correct |
| 57 |
Correct |
7 ms |
720 KB |
Output is correct |
| 58 |
Partially correct |
7 ms |
1116 KB |
Output is partially correct |
| 59 |
Partially correct |
7 ms |
720 KB |
Output is partially correct |
| 60 |
Partially correct |
10 ms |
608 KB |
Output is partially correct |
| 61 |
Partially correct |
8 ms |
972 KB |
Output is partially correct |
| 62 |
Correct |
5 ms |
716 KB |
Output is correct |
| 63 |
Correct |
6 ms |
716 KB |
Output is correct |
| 64 |
Correct |
9 ms |
728 KB |
Output is correct |
| 65 |
Partially correct |
8 ms |
868 KB |
Output is partially correct |
| 66 |
Partially correct |
8 ms |
620 KB |
Output is partially correct |
| 67 |
Partially correct |
8 ms |
856 KB |
Output is partially correct |
| 68 |
Partially correct |
9 ms |
716 KB |
Output is partially correct |
| 69 |
Partially correct |
8 ms |
712 KB |
Output is partially correct |
| 70 |
Partially correct |
8 ms |
612 KB |
Output is partially correct |
| 71 |
Correct |
6 ms |
864 KB |
Output is correct |
| 72 |
Correct |
7 ms |
856 KB |
Output is correct |
| 73 |
Partially correct |
7 ms |
872 KB |
Output is partially correct |
| 74 |
Partially correct |
7 ms |
868 KB |
Output is partially correct |
| 75 |
Partially correct |
10 ms |
1120 KB |
Output is partially correct |
| 76 |
Partially correct |
8 ms |
616 KB |
Output is partially correct |
| 77 |
Correct |
5 ms |
972 KB |
Output is correct |
| 78 |
Correct |
7 ms |
616 KB |
Output is correct |
| 79 |
Partially correct |
7 ms |
1124 KB |
Output is partially correct |
| 80 |
Partially correct |
8 ms |
872 KB |
Output is partially correct |
| 81 |
Partially correct |
8 ms |
1120 KB |
Output is partially correct |
| 82 |
Partially correct |
8 ms |
468 KB |
Output is partially correct |
