Submission #23692

#	Time	Username	Problem	Language	Result	Execution time	Memory
23692		Hiasat	Game (IOI14_game)	C++14	15 / 100	0 ms	10920 KiB

game

#include "game.h"
#include <iostream>
#include <cstdio>
#include <set>
#include <vector>
#include <assert.h>

using namespace std;

typedef pair<int,int> pii;

int dsu[2010],rem[2010],N,cnt,number;

multiset< pii > st[2010];

int find(int u){
	return dsu[u] == u ? u : dsu[u] = find(dsu[u]);
}
void initialize(int n) {
	N = n;
	number = n;
	for (int i = 0; i < n; ++i){
		dsu[i] = i;
		rem[i] = n-1;
		for(int j = 0 ; j < n ; j++){
			if(j == i)
				continue;
			st[i].insert(make_pair(i,j));
		}
	}
}

bool check(int a){
	return st[a].size() == 1 && st[find((*st[a].begin()).second)].size() == 1;
}
int hasEdge(int u, int v) {
	cnt++;
	int a = find(u);
	int b = find(v);
	if(a == b){
		return 0;
	}
	st[a].erase(make_pair(u,v));
	st[b].erase(make_pair(v,u));
	bool can = st[a].size() == 0 || st[b].size() == 0;
	can = can || check(a);
	can = can || check(b);
	if(can){
		for(set<pii>::iterator it = st[b].begin();it != st[b].end();it++){
			pii cur = *it;
			if(st[a].find(make_pair(cur.second,cur.first)) != st[a].end())
				continue;
			st[a].insert(cur);
		}
		dsu[b] = a;
		return true;
	}
    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 27
• Subtask 3: 0 / 58