Submission #700228

#	Time	Username	Problem	Language	Result	Execution time	Memory
700228		cig32	Amusement Park (JOI17_amusement_park)	C++17	83 / 100	27 ms	4892 KiB

Joi

#include "Joi.h"
#include "bits/stdc++.h"
using namespace std;

static vector<int> adj2[12269];
static bool vis2[12269];
static int val2[12269];
static int nxt2;
static void dfs2(int node, long long X, int par) {
  val2[node] = nxt2;
  nxt2 = (nxt2 + 1) % 60;
  long long res = (X & (1ll << val2[node]));
  if(res > 0) res = 1;
  MessageBoard(node, (int) res);
  vis2[node] = 1;
  for(int x: adj2[node]) {
    if(!vis2[x]) {
      dfs2(x, X, node);
    }
  }
}
void Joi(int N, int M, int A[], int B[], long long X, int T) {
  for(int i=0; i<M; i++) {
    adj2[A[i]].push_back(B[i]);
    adj2[B[i]].push_back(A[i]);
  }
  for(int i=0; i<N; i++) {
    sort(adj2[i].begin(), adj2[i].end());
  }
  for(int i=0; i<N; i++) {
    vis2[i] = 0;
  }
  dfs2(0, X, -1);
}

Ioi

#include "Ioi.h"
#include "bits/stdc++.h"
using namespace std;
const int MAXN = 1e4 + 10;
static vector<int> adj[MAXN];
static bool vis[MAXN];
static int val[MAXN];
static int sz[MAXN];
static int nxt;
static vector<int> et;
static int p[MAXN];
static void dfs(int node, int par) {
  val[node] = nxt;
  nxt = (nxt+1) % 60;
  vis[node] = 1;
  sz[node] = 1;
  p[node] = par;
  et.push_back(node);
  for(int x: adj[node]) {
    if(!vis[x]) {
      dfs(x, node);
      et.push_back(node);
      sz[node] += sz[x];
    }
  }
}
 
long long Ioi(int N, int M, int A[], int B[], int P, int V, int T) {
  nxt = 0;
  et.clear();
  for(int i=0; i<N; i++) {
    adj[i].clear();
  }
  for(int i=0; i<M; i++) {
    adj[A[i]].push_back(B[i]);
    adj[B[i]].push_back(A[i]);
  }
  for(int i=0; i<N; i++) {
    sort(adj[i].begin(), adj[i].end());
  }
  for(int i=0; i<N; i++) {
    vis[i] = 0;
  }
  dfs(0, -1);
  long long ans = 0;
  int res[60];
  for(int i=0; i<60; i++) res[i] = -1;
  res[val[P]] = V;
  int l[N];
  for(int i=0; i<N; i++) l[i] = -1;
  for(int i=0; i<et.size(); i++) {
    if(l[et[i]] == -1) l[et[i]] = i;
  }
  int node = P, idx = l[P];
  
  if(sz[node]>=60) {
    set<int> st;
    st.insert(val[P]);
    while(st.size() != 60) {
      idx++;
      node = et[idx];
      res[val[node]] = Move(node);
      st.insert(val[node]);
    }
  }
  else {
    set<int>st;
    st.insert(val[P]);
    for(int i=0; sz[node]<75; i++) {
      if(p[node] != -1) {
        node=p[node];
        idx=l[node];
        res[val[node]]=Move(node);
        st.insert(val[node]);
      }
      else break;
    }
    while(st.size() != 60) {
      idx++;
      idx %= (int) et.size();
      node = et[idx];
      res[val[node]] = Move(node);
      st.insert(val[node]);
    }
 
  }
 
  for(int i=0; i<60; i++) {
    if(res[i]) ans += (1ll << i);
  }
  return ans;
}

Compilation message (stderr)

Ioi.cpp: In function 'long long int Ioi(int, int, int*, int*, int, int, int)':
Ioi.cpp:51:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   for(int i=0; i<et.size(); i++) {
      |                ~^~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 55 / 55
• Subtask 5: 0 / 17