#include <bits/stdc++.h>
#include "meetings.h"
using namespace std ;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()) ;
int rand(int l , int r)
{
return uniform_int_distribution<int>(l , r)(rng) ;
}
const int MAX = 2004 ;
int n ;
vector< pair<int , int> >ans ;
vector<int>subtree[MAX] ;
int curroot ;
bool cmp(int &a , int &b)
{
return (Query(curroot , a , b) == a) ;
}
void solve(int root , vector<int>v)
{
if(!v.size())
return ;
curroot = root ;
shuffle(v.begin() , v.end() , rng) ;
subtree[root].clear() ;
for(auto &node : v)
subtree[node].clear() ;
int x = v.back() ;
v.pop_back() ;
vector<int>path = {x} ;
for(auto &node : v)
{
int lca = Query(root , x , node) ;
if(lca != node)
subtree[lca].push_back(node) ;
if(lca != root)
path.push_back(lca) ;
}
sort(path.begin() , path.end()) ;
path.erase(unique(path.begin() , path.end()) , path.end()) ;
sort(path.begin() , path.end() , cmp) ;
ans.emplace_back(root , path[0]) ;
for(int i = 0 ; i+1 < path.size() ; ++i)
ans.emplace_back(path[i] , path[i+1]) ;
solve(root , subtree[root]) ;
for(auto &node : path)
solve(node , subtree[node]) ;
}
void Solve(int N)
{
n = N ;
int root = rand(0 , n-1) ;
vector<int>v ;
for(int i = 0 ; i < n ; ++i)
{
if(i != root)
v.push_back(i) ;
}
solve(root , v) ;
for(auto &p : ans)
Bridge(min(p.first , p.second) , max(p.first , p.second)) ;
}
Compilation message
meetings.cpp: In function 'void solve(int, std::vector<int>)':
meetings.cpp:52:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int i = 0 ; i+1 < path.size() ; ++i)
| ~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
336 KB |
Output is correct |
| 2 |
Correct |
0 ms |
336 KB |
Output is correct |
| 3 |
Correct |
0 ms |
336 KB |
Output is correct |
| 4 |
Correct |
0 ms |
336 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
0 ms |
336 KB |
Output is correct |
| 7 |
Correct |
0 ms |
336 KB |
Output is correct |
| 8 |
Correct |
0 ms |
336 KB |
Output is correct |
| 9 |
Correct |
0 ms |
336 KB |
Output is correct |
| 10 |
Correct |
0 ms |
336 KB |
Output is correct |
| 11 |
Correct |
0 ms |
336 KB |
Output is correct |
| 12 |
Correct |
0 ms |
336 KB |
Output is correct |
| 13 |
Correct |
0 ms |
336 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
336 KB |
Output is correct |
| 2 |
Correct |
0 ms |
336 KB |
Output is correct |
| 3 |
Correct |
0 ms |
336 KB |
Output is correct |
| 4 |
Correct |
0 ms |
336 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
0 ms |
336 KB |
Output is correct |
| 7 |
Correct |
0 ms |
336 KB |
Output is correct |
| 8 |
Correct |
0 ms |
336 KB |
Output is correct |
| 9 |
Correct |
0 ms |
336 KB |
Output is correct |
| 10 |
Correct |
0 ms |
336 KB |
Output is correct |
| 11 |
Correct |
0 ms |
336 KB |
Output is correct |
| 12 |
Correct |
0 ms |
336 KB |
Output is correct |
| 13 |
Correct |
0 ms |
336 KB |
Output is correct |
| 14 |
Correct |
1 ms |
336 KB |
Output is correct |
| 15 |
Correct |
0 ms |
336 KB |
Output is correct |
| 16 |
Correct |
0 ms |
400 KB |
Output is correct |
| 17 |
Correct |
0 ms |
336 KB |
Output is correct |
| 18 |
Correct |
0 ms |
336 KB |
Output is correct |
| 19 |
Correct |
1 ms |
336 KB |
Output is correct |
| 20 |
Correct |
0 ms |
336 KB |
Output is correct |
| 21 |
Correct |
0 ms |
336 KB |
Output is correct |
| 22 |
Correct |
0 ms |
336 KB |
Output is correct |
| 23 |
Correct |
0 ms |
336 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
0 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
336 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
336 KB |
Output is correct |
| 2 |
Correct |
0 ms |
336 KB |
Output is correct |
| 3 |
Correct |
0 ms |
336 KB |
Output is correct |
| 4 |
Correct |
0 ms |
336 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
0 ms |
336 KB |
Output is correct |
| 7 |
Correct |
0 ms |
336 KB |
Output is correct |
| 8 |
Correct |
0 ms |
336 KB |
Output is correct |
| 9 |
Correct |
0 ms |
336 KB |
Output is correct |
| 10 |
Correct |
0 ms |
336 KB |
Output is correct |
| 11 |
Correct |
0 ms |
336 KB |
Output is correct |
| 12 |
Correct |
0 ms |
336 KB |
Output is correct |
| 13 |
Correct |
0 ms |
336 KB |
Output is correct |
| 14 |
Correct |
1 ms |
336 KB |
Output is correct |
| 15 |
Correct |
0 ms |
336 KB |
Output is correct |
| 16 |
Correct |
0 ms |
400 KB |
Output is correct |
| 17 |
Correct |
0 ms |
336 KB |
Output is correct |
| 18 |
Correct |
0 ms |
336 KB |
Output is correct |
| 19 |
Correct |
1 ms |
336 KB |
Output is correct |
| 20 |
Correct |
0 ms |
336 KB |
Output is correct |
| 21 |
Correct |
0 ms |
336 KB |
Output is correct |
| 22 |
Correct |
0 ms |
336 KB |
Output is correct |
| 23 |
Correct |
0 ms |
336 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
0 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
336 KB |
Output is correct |
| 27 |
Correct |
4 ms |
336 KB |
Output is correct |
| 28 |
Correct |
3 ms |
336 KB |
Output is correct |
| 29 |
Correct |
4 ms |
336 KB |
Output is correct |
| 30 |
Correct |
4 ms |
336 KB |
Output is correct |
| 31 |
Correct |
4 ms |
336 KB |
Output is correct |
| 32 |
Correct |
5 ms |
336 KB |
Output is correct |
| 33 |
Correct |
8 ms |
336 KB |
Output is correct |
| 34 |
Correct |
9 ms |
336 KB |
Output is correct |
| 35 |
Correct |
9 ms |
336 KB |
Output is correct |
| 36 |
Correct |
4 ms |
336 KB |
Output is correct |
| 37 |
Correct |
9 ms |
464 KB |
Output is correct |
| 38 |
Correct |
9 ms |
464 KB |
Output is correct |
| 39 |
Correct |
4 ms |
464 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
232 ms |
660 KB |
Output is correct |
| 2 |
Correct |
225 ms |
640 KB |
Output is correct |
| 3 |
Correct |
287 ms |
640 KB |
Output is correct |
| 4 |
Correct |
231 ms |
724 KB |
Output is correct |
| 5 |
Correct |
195 ms |
696 KB |
Output is correct |
| 6 |
Correct |
213 ms |
848 KB |
Output is correct |
| 7 |
Correct |
381 ms |
592 KB |
Output is correct |
| 8 |
Correct |
479 ms |
772 KB |
Output is correct |
| 9 |
Correct |
452 ms |
716 KB |
Output is correct |
| 10 |
Correct |
420 ms |
860 KB |
Output is correct |
| 11 |
Correct |
487 ms |
676 KB |
Output is correct |
| 12 |
Correct |
199 ms |
684 KB |
Output is correct |
| 13 |
Correct |
147 ms |
732 KB |
Output is correct |
| 14 |
Correct |
342 ms |
712 KB |
Output is correct |
| 15 |
Correct |
253 ms |
616 KB |
Output is correct |
| 16 |
Correct |
301 ms |
608 KB |
Output is correct |
| 17 |
Correct |
488 ms |
620 KB |
Output is correct |
| 18 |
Correct |
244 ms |
592 KB |
Output is correct |
| 19 |
Correct |
256 ms |
732 KB |
Output is correct |
| 20 |
Correct |
275 ms |
600 KB |
Output is correct |
| 21 |
Correct |
258 ms |
632 KB |
Output is correct |
| 22 |
Correct |
290 ms |
624 KB |
Output is correct |
| 23 |
Correct |
248 ms |
644 KB |
Output is correct |
| 24 |
Correct |
231 ms |
604 KB |
Output is correct |
| 25 |
Correct |
230 ms |
644 KB |
Output is correct |
| 26 |
Correct |
235 ms |
628 KB |
Output is correct |
| 27 |
Correct |
269 ms |
616 KB |
Output is correct |
| 28 |
Correct |
544 ms |
600 KB |
Output is correct |
| 29 |
Correct |
384 ms |
660 KB |
Output is correct |
| 30 |
Correct |
429 ms |
668 KB |
Output is correct |
| 31 |
Correct |
478 ms |
768 KB |
Output is correct |
| 32 |
Correct |
664 ms |
740 KB |
Output is correct |
| 33 |
Correct |
465 ms |
692 KB |
Output is correct |
| 34 |
Correct |
4 ms |
336 KB |
Output is correct |
| 35 |
Correct |
4 ms |
336 KB |
Output is correct |
| 36 |
Correct |
4 ms |
336 KB |
Output is correct |
| 37 |
Correct |
3 ms |
336 KB |
Output is correct |
| 38 |
Correct |
4 ms |
336 KB |
Output is correct |
| 39 |
Correct |
8 ms |
440 KB |
Output is correct |
| 40 |
Correct |
7 ms |
336 KB |
Output is correct |
| 41 |
Correct |
9 ms |
456 KB |
Output is correct |
| 42 |
Correct |
9 ms |
336 KB |
Output is correct |
| 43 |
Correct |
3 ms |
336 KB |
Output is correct |
| 44 |
Correct |
9 ms |
436 KB |
Output is correct |
| 45 |
Correct |
8 ms |
440 KB |
Output is correct |
| 46 |
Correct |
7 ms |
464 KB |
Output is correct |
| 47 |
Correct |
0 ms |
336 KB |
Output is correct |
| 48 |
Correct |
1 ms |
336 KB |
Output is correct |
| 49 |
Correct |
0 ms |
336 KB |
Output is correct |
| 50 |
Correct |
0 ms |
336 KB |
Output is correct |
| 51 |
Correct |
0 ms |
336 KB |
Output is correct |
| 52 |
Correct |
0 ms |
336 KB |
Output is correct |
| 53 |
Correct |
0 ms |
336 KB |
Output is correct |
| 54 |
Correct |
1 ms |
336 KB |
Output is correct |
| 55 |
Correct |
0 ms |
336 KB |
Output is correct |
| 56 |
Correct |
0 ms |
336 KB |
Output is correct |
| 57 |
Correct |
1 ms |
336 KB |
Output is correct |
| 58 |
Correct |
0 ms |
336 KB |
Output is correct |
| 59 |
Correct |
0 ms |
336 KB |
Output is correct |
| 60 |
Correct |
0 ms |
336 KB |
Output is correct |
| 61 |
Correct |
1 ms |
336 KB |
Output is correct |
| 62 |
Correct |
0 ms |
336 KB |
Output is correct |
| 63 |
Correct |
0 ms |
336 KB |
Output is correct |
| 64 |
Correct |
0 ms |
336 KB |
Output is correct |
| 65 |
Correct |
1 ms |
336 KB |
Output is correct |
| 66 |
Correct |
0 ms |
336 KB |
Output is correct |
| 67 |
Correct |
0 ms |
336 KB |
Output is correct |
| 68 |
Correct |
0 ms |
336 KB |
Output is correct |
| 69 |
Correct |
0 ms |
336 KB |
Output is correct |
| 70 |
Correct |
0 ms |
336 KB |
Output is correct |
| 71 |
Correct |
0 ms |
336 KB |
Output is correct |
| 72 |
Correct |
0 ms |
336 KB |
Output is correct |
