Submission #285445

#	Time	Username	Problem	Language	Result	Execution time	Memory
285445		DanerZein	Split the Attractions (IOI19_split)	C++14	0 / 100	77 ms	9720 KiB

split

#include "split.h"
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef pair<int,int> ii;
vector<vi> G;
int vis[100010];
bool sw=0;
int ca;
void dfs(int u,int c){
  if(ca<=0){
    sw=1;
    return;
  }
  ca--;
  vis[u]=c;
  for(auto &v:G[u]){
    if(vis[v]==-1){
      dfs(v,c);
    }
  }
}
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
  G.resize(n+1);
  for(int i=0;i<p.size();i++){
    G[p[i]].push_back(q[i]);
    G[q[i]].push_back(p[i]);
  }
  vector<ii> aux;
  aux.push_back(ii(a,1));
  aux.push_back(ii(b,2));
  aux.push_back(ii(c,3));
  sort(aux.begin(),aux.end());
  int id;
  for(int i=0;i<G.size();i++){
    if(G[i].size()==1){
      id=i;
      break;
    }
  }
  memset(vis,-1,sizeof vis);
  ca=aux[0].first;
  dfs(id,aux[0].second);
  /*cout<<id<<" "<<aux[0].second<<" "<<aux[0].first-1<<endl;
  for(int i=0;i<n;i++){
    cout<<vis[i]<<" ";
  }
  cout<<endl;*/
  bool res=0;
  if(sw==0){
    res=1;
  }
  for(int i=0;i<n;i++){
    if(vis[i]==-1){
      sw=0;
      ca=aux[1].first;
      //cout<<ca<<endl;
      dfs(i,aux[1].second);
      break;
    }
  }
  if(sw==0){
    res=1;
  }
  vector<int> r;
  if(res==1){
    for(int i=0;i<n;i++){
      r.push_back(0);
    }
  }
  else{
    for(int i=0;i<n;i++){
      if(vis[i]==-1){
	r.push_back(aux[2].second);
      }
      else{
	r.push_back(vis[i]);
      }
    }
  }
  return r;
}

Compilation message (stderr)

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:25:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for(int i=0;i<p.size();i++){
      |               ~^~~~~~~~~
split.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int i=0;i<G.size();i++){
      |               ~^~~~~~~~~
split.cpp:43:6: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |   dfs(id,aux[0].second);
      |   ~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36