Submission #286905

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
286905	2020-08-31 06:57:14	tmwilliamlin168	Ancient Books (IOI17_books)	C++14	100 / 100	1147 ms	209380 KiB

books

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#include "books.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
const int mxN=1e6;
int n, a, b, who[mxN];
vector<int> adj[mxN], adj2[mxN], st, adj3[mxN], c;
bool vis[mxN];
ar<int, 3> dp[mxN];
void dfs1(int u) {
  vis[u]=1;
  for(int v : adj[u])
    if(!vis[v])
      dfs1(v);
  st.push_back(u);
}
void dfs2(int u, int r) {
  vis[u]=0;
  c.push_back(u);
  who[u]=r;
  for(int v : adj2[u])
    if(vis[v])
      dfs2(v, r);
}
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 20 / 20
• Subtask 5: 30 / 30