Submission #131534

#	Time	Username	Problem	Language	Result	Execution time	Memory
131534		ekrem	Meetings (JOI19_meetings)	C++14	29 / 100	3061 ms	1304 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
#define st first
#define nd second
#define mp make_pair
#define pb push_back
#define mod 1000000007
#define inf 1000000009
#define MAXN 1000005

using namespace std;

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

int n, k, sil[MAXN];

int sor(int x, int y, int z){
	if(x == y)return x;
	if(z == y)return z;
	if(x == z)return x;
	return Query(x - 1, y - 1, z - 1) + 1;
}

void coz(vi a, int x){
	if(a.empty())
		return;
	vi b;
	int son = a[0];
	sil[0] = 1;
	// b.pb(a[0]);
	// cout << x << " -> " << son << " ";
	for(int i = 1; i < a.size(); i++){
		int it = a[i];
		// cout << *it << " ";
		int y = sor(son, x, it);
		// cout << son << " " << x << " " << *it << " = " << y << endl;
		if(y == x){
			sil[i] = 0;
			continue;
		}
		if(y == son){
			sil[+i] = 1;
			// b.pb(*it);
			// b.insert(*it);
			continue;
		}
		son = y;
		sil[i] = 1;
		// b.pb(*it);
	}
	// cout << endl;
	vi of;
	for(int i = 0; i < a.size(); i++)
		if(!sil[i])
			of.pb(a[i]);
		else if(a[i] != son)
			b.pb(a[i]);
	Bridge(min(x - 1, son - 1), max(x - 1, son - 1));
	// cout << x << " " << son << " " << b.size() << endl;
	coz(b, son);
	coz(of, x);
}

void Solve(int nn) {n = nn;
	vi a;
	for(int i = 2; i <= n; i++)
		a.pb(i);
	coz(a, 1);
}

Compilation message (stderr)

meetings.cpp: In function 'void coz(vi, int)':
meetings.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 1; i < a.size(); i++){
                 ~~^~~~~~~~~~
meetings.cpp:56:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < a.size(); i++)
                 ~~^~~~~~~~~~

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