Submission #210695

#	Time	Username	Problem	Language	Result	Execution time	Memory
210695		peuch	Game (IOI14_game)	C++17	42 / 100	1099 ms	2424 KiB

game

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

const int MAXN = 1600;

int marcAux;
int marc[MAXN];
int cnt;
int N;

vector<int> ar[MAXN];

void dfs(int cur){
	cnt++;
	marc[cur] = marcAux;
	for(int i = 0; i < ar[cur].size(); i++){
		int viz = ar[cur][i];
		if(marc[viz] == marcAux) continue;
		dfs(viz);
	}
}

void initialize(int n) {
	N = n;
	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			ar[i].push_back(j);
			ar[j].push_back(i);
		}
	}
}

int hasEdge(int u, int v) {
	int id = -1;
	for(int i = 0; i < ar[u].size(); i++)
		if(ar[u][i] == v) id = i;
	if(id < 0) return 0;
	ar[u].erase(ar[u].begin() + id);
	for(int i = 0; i < ar[v].size(); i++)
		if(ar[v][i] == u) id = i;
	if(id < 0) return 0;
	ar[v].erase(ar[v].begin() + id);
	marcAux++;
	cnt = 0;
	dfs(0);
	if(cnt == N) return 0;
	else{
		ar[u].push_back(v);
		ar[v].push_back(u);
		return 1;
	}
}

Compilation message (stderr)

game.cpp: In function 'void dfs(int)':
game.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ar[cur].size(); i++){
                 ~~^~~~~~~~~~~~~~~~
game.cpp: In function 'int hasEdge(int, int)':
game.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ar[u].size(); i++)
                 ~~^~~~~~~~~~~~~~
game.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ar[v].size(); i++)
                 ~~^~~~~~~~~~~~~~

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