Submission #1061897

#	Time	Username	Problem	Language	Result	Execution time	Memory
1061897		mychecksedad	Beech Tree (IOI23_beechtree)	C++17	9 / 100	2098 ms	11348 KiB

beechtree

#include "beechtree.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define ll long long
#define ff first
#define ss second
#define vi vector<int>
const int N = 3005;
const ll INF = 1e18;

vector<int> g[N], s[N];
vi res;
int col[N], n, m, par[N];
bool ok = 1;
void dfs(int v){
  for(int u: g[v]){
    dfs(u);
    par[u] = v;
    for(int x: s[u]) s[v].pb(x);
  }
  sort(all(s[v]));
  bool okkk = 0;
  if(s[v].empty()) okkk = 1;
  do{
    vector<int> f = s[v];
    f.insert(f.begin(), v);
    vector<int> co(m);
    bool good = 1;
    for(int i = 1; i < f.size(); ++i){
      if(f[co[col[f[i]]]] != par[f[i]]){
        good = 0;
        break;
      }
      co[col[f[i]]]++;
    }
    if(good){
      okkk = 1;
      break;
    }
  }while(next_permutation(all(s[v])));
  s[v].pb(v);
  // ok = ok & okkk;
  res[v] = okkk;
}
std::vector<int> beechtree(int nn, int mm, std::vector<int> P, std::vector<int> C)
{n=nn, m=mm;
  res.resize(n);
  for(int i = 1; i < n; ++i){
    g[P[i]].pb(i);
    col[i] = C[i];
  }
  dfs(0);
  return res;
}

Compilation message (stderr)

beechtree.cpp: In function 'void dfs(int)':
beechtree.cpp:31:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i = 1; i < f.size(); ++i){
      |                    ~~^~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 9 / 9
• Subtask 2: 0 / 5
• Subtask 3: 0 / 9
• Subtask 4: 0 / 8
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 12
• Subtask 8: 0 / 17
• Subtask 9: 0 / 12