제출 #745276

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
745276		speedyArda	게임 (APIO22_game)	C++17	60 / 100	1332 ms	32892 KiB

game

#include "game.h"
#include "bits/stdc++.h"
using namespace std;
const int MAXN = 3e4+5;
const int MAXK = 1e3+5;
vector< vector<int> > adj(MAXN);
bool visited[MAXN][MAXK];
int ans = 0;
int special = 0;
void dfs(int v, int x)
{
  visited[v][x] = true;
  if(v <= x) // v is also a special node in this case, as we know x is special and all specials are 0, 1, 2 .... k - 1
    ans = 1; // Came to smaller special node so we can go v -> x and repeat the cycle
  for(int e : adj[v])
  {
    if(visited[e][x])
      continue;
    dfs(e, x);
  }
}

void init(int n, int k) {
  special = k;
  for(int i = 0; i < n; i++)
    adj[i].clear();
  for(int i = 0; i <= k - 2; i++)
  {
    adj[i].push_back(i + 1);
  }
  for(int i = 0; i < k - 1; i++)
    dfs(i + 1, i); // if we do i, i then it will trigger if(v <= x) in the dfs false.
} 

int add_teleporter(int u, int v) {
  adj[u].push_back(v);
  for(int i = 0; i < special; i++)
  {
    if((u == i || visited[u][i]) && !visited[v][i])
      dfs(v, i);
  }
  return ans;
}

• Subtask 1: 2 / 2
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 30 / 30
• Subtask 5: 0 / 40