Submission #421088

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
421088	2021-06-08 17:41:38	Jasiekstrz	Road Closures (APIO21_roads)	C++17	100 / 100	1907 ms	504452 KiB

roads

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#include "roads.h"
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int NN=1e5;
const int SQ=100;
const long long INF=(long long)1e18+7;
vector<pair<int,int>> e[NN+10];
vector<pair<long long,long long>> *dp[NN+10]; // fi - parent destroyed, se - parent not destroyed
bool big(int x)
{
  return e[x].size()>SQ;
}
void dfs(int x,int p,int n)
{
  for(auto v:e[x])
  {
    if(v.fi!=p)
      dfs(v.fi,x,n);
  }
  if(big(x))
  {
    dp[x]=new vector<pair<long long,long long>>(n);
    vector<long long> tmp;
    tmp.reserve(e[x].size());
    // small k
    for(int k=0;k<=min(SQ,n-1);k++)
    {
      tmp.clear();
 
 
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Compilation message (stderr)

roads.cpp: In function 'void dfs(int, int, int)':
roads.cpp:63:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   63 |    if(dp[v.fi]->size()==n)
      |       ~~~~~~~~~~~~~~~~^~~
roads.cpp:91:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |    for(int i=0;i<=tmp.size() && i<=k;i++)
      |                ~^~~~~~~~~~~~
roads.cpp:150:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  150 |    if(dp[v.fi]->size()==n)
      |       ~~~~~~~~~~~~~~~~^~~
roads.cpp: In function 'std::vector<long long int> minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)':
roads.cpp:195:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  195 |   if(i<(dp[0]->size()))
      |      ~^~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 14 / 14
• Subtask 4: 10 / 10
• Subtask 5: 17 / 17
• Subtask 6: 25 / 25
• Subtask 7: 22 / 22