Submission #131540

#	Time	Username	Problem	Language	Result	Execution time	Memory
131540		MrTEK	Meetings (JOI19_meetings)	C++14	0 / 100	135 ms	684 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long int ll;
typedef pair <int,int> ii;

const int N = 3e2 + 5;

vector <int> v;
int mark[N][N],d[N][N];

void bridge(int x,int y) {
	Bridge(min(x,y),max(x,y));
}

void solve(vector <int> v) {
	if (v.size() < 2)
		return;
	if (v.size() == 2) {
		// cerr << "BEBE BRIDGE " << v[0] << " " << v[1] << endl;
		bridge(v[0],v[1]);
		return;
	}
	// cerr << "Selam oyun baslasin : " << v[0] << endl;
	for (int i = 1 ; i < v.size() ; i++) {
		if (mark[v[0]][i])
			continue;
		vector <int> nv;
		nv.push_back(i);
		mark[v[0]][i] = 1;
		for (int j = i + 1 ; j < v.size() ; j++)
			if (mark[v[0]][j] == 0) {
				int temp = Query(v[0],v[i],v[j]);
				if (temp != v[0]) {
					mark[v[0]][j] = 1;
					nv.push_back(j);
					if (temp != v[i])
						d[v[0]][i] = 1;
					if (temp != v[j])
						d[v[0]][j] = 1;
				}
			}
		// cerr << "yeni agac : " << v[0] << " " << v[i] << "\n";
		// cerr << nv.size() << endl;
		vector <int> nv2;
		for (int i = 0 ; i < nv.size() ; i++) {
			nv2.push_back(v[nv[i]]);
			if (d[v[0]][nv[i]])
				continue;
			bool flag = true;
			for (int j = i + 1 ; j < nv.size() ; j++) {
				if (d[v[0]][nv[j]])
					continue;
				int temp = Query(v[0],v[nv[i]],v[nv[j]]);
				if (temp != nv[i]) {
					flag = false;
					d[v[0]][nv[i]] = 1;
					break;
				}
				else {
					d[v[0]][nv[j]] = 1;
				}
			}
			if (flag == true) {
				bridge(v[0],v[nv[i]]);
			}
		}
		solve(nv2);
	}

}

void Solve(int n) {
	for (int i = 0 ; i < n ; i++)
		v.push_back(i);
	solve(v);
}

Compilation message (stderr)

meetings.cpp: In function 'void solve(std::vector<int>)':
meetings.cpp:26:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 1 ; i < v.size() ; i++) {
                   ~~^~~~~~~~~~
meetings.cpp:32:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = i + 1 ; j < v.size() ; j++)
                        ~~^~~~~~~~~~
meetings.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0 ; i < nv.size() ; i++) {
                    ~~^~~~~~~~~~~
meetings.cpp:52:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = i + 1 ; j < nv.size() ; j++) {
                         ~~^~~~~~~~~~~

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