oj.uz

Submission #226796

# Submission time Handle Problem Language Result Execution time Memory
226796 2020-04-25T11:29:33 Z kshitij_sodani Meetings (JOI19_meetings) C++17
0 / 100
 370 ms 1400 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
typedef int64_t llo;
#define mp make_pair
#define pb push_back
#define a first
#define b second
#define endl "\n"
#include "meetings.h"
mt19937 rng;
/*void Bridge(int u,int v){
	cout<<u<<" "<<v<<endl;
}
int Query(int u,int v,int x){
	cout<<u<<" "<<v<<" "<<x<<endl;
	int x2;
	cin>>x2;
	return x2;
}*/
int par[2001];
int par4;
int n;
bool sort_by(int u,int v){
	return Query(par4,u,v)==u;
}
void solve2(vector<int> v){
	
	shuffle(v.begin(),v.end(),rng);
	int st=v[0];
	int en=v[1];

	vector<int> sub[n];
	set<int> now;
	now.insert(st);
	now.insert(en);
	for(auto i:v){
		if(i==st or i==en){
			continue;
		}
		int x=Query(st,en,i);
		now.insert(x);
		if(i!=x){
			sub[x].pb(i);
		}
	}
	vector<int> ss;
	for(auto j:now){
		if(j!=st){
			ss.pb(j);
		}
	}
	par4=st;
	sort(ss.begin(),ss.end(),sort_by);
	for(int i=0;i<ss.size();i++){
		if(i==0){
			par[ss[i]]=par4;
		}
		else{
			par[ss[i]]=ss[i-1];
		}
	}
	for(auto j:now){
		if(sub[j].size()>0){
			sub[j].pb(j);
			solve2(sub[j]);
		}
	}
}
void Solve(int nn){
	n=nn;
	rng= mt19937(chrono::steady_clock::now().time_since_epoch().count());
	for(int i=0;i<n;i++){
		par[i]=-1;
	}
	vector<int> kk;
	for(int i=0;i<n;i++){
		kk.pb(i);
	}
	solve2(kk);

	for(int i=0;i<n;i++){
		if(par[i]!=-1){
			Bridge(min(par[i],i),max(par[i],i));
		}
	}
}

/*int main(){
	Solve(5);


	return 0;
}*/

Compilation message

meetings.cpp: In function 'void solve2(std::vector<int>)':
meetings.cpp:55:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<ss.size();i++){
              ~^~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Incorrect 4 ms 384 KB Wrong Answer [6]
5 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Incorrect 4 ms 384 KB Wrong Answer [6]
5 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Incorrect 4 ms 384 KB Wrong Answer [6]
5 Halted 0 ms 0 KB -

Subtask #4
0 / 71.0

# Verdict Execution time Memory Grader output
1 Incorrect 370 ms 1400 KB Wrong Answer [6]
2 Halted 0 ms 0 KB -