Submission #203553

#	Time	Username	Problem	Language	Result	Execution time	Memory
203553		abra_stone	Meetings (JOI19_meetings)	C++14	29 / 100	3080 ms	2300 KiB

meetings

#include "meetings.h"
#include <cstring>
#include <vector>
#include <algorithm>
#define N 20005
using namespace std;

bool v1[N], v2[N];
vector<int> gr[N];

void f(int p) {
	int i;
	if (v1[p]) return;
	v1[p] = 1;
	for (i = 0; i < gr[p].size(); i++) {
		f(gr[p][i]);
	}
	for (i = 0; i < gr[p].size(); i++) {
		int ne = gr[p][i];
		if (!v2[ne]) {
			v2[ne] = 1;
			Bridge(min(p, ne), max(p, ne));
		}
	}
}

void Solve(int n) {
	int i, j, t;
	for (i = 1; i < n; i++) gr[0].push_back(i);
	for (i = 1; i < n; i++) {
		for (j = i + 1; j < n; j++) {
			t = Query(0, i, j);
			if (t != i) gr[t].push_back(i);
			if (t != j) gr[t].push_back(j);
		}
	}
	for (i = 0; i < n; i++) {
		sort(gr[i].begin(), gr[i].end());
		gr[i].erase(unique(gr[i].begin(), gr[i].end()), gr[i].end());
	}
	f(0);
}

Compilation message (stderr)

meetings.cpp: In function 'void f(int)':
meetings.cpp:15:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < gr[p].size(); i++) {
              ~~^~~~~~~~~~~~~~
meetings.cpp:18:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < gr[p].size(); i++) {
              ~~^~~~~~~~~~~~~~

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