Submission #946917

#	Time	Username	Problem	Language	Result	Execution time	Memory
946917		penguin133	Meetings (JOI19_meetings)	C++17	17 / 100	1580 ms	16464 KiB

meetings

#include <bits/stdc++.h>
using namespace std;
 
//#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
#include "meetings.h"
 
 
int par[2005];
int getr(int x){return par[x] == x ? x : par[x] = getr(par[x]);}
void merge(int a, int b){
	a = getr(a); b =getr(b);
	par[b] = a;
}
void Solve(int N) {
	int adj[N][N];
	for(int i = 0; i < N; i++)for(int j = 0; j < N; j++)adj[i][j] = 0;
	for(int i = 0; i < N; i++)par[i] = i;
  for(int i = 0; i < N; i++){
	  for(int j = i + 1; j < N; j++){
		  if(getr(i) == getr(j) || adj[i][j])continue;
		  bool f = 1;
		  for(int k = 0; k < N; k++){
			  if(k == i || k == j)continue;
			  int res = Query(i, j, k);
			   if(res == k){
				  f = 0;
				  break;
			  }
			  if(res != j)adj[j][k] = adj[k][j] = 1;
			  if(res != i)adj[i][k] = adj[k][i] = 1;
            if(res != j && res != i){
				f = 0;
              	break;
			}
		  }
		  if(f)Bridge(i, j), merge(i, j);
	  }
  }
}

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 71