Submission #831544

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
831544	2023-08-20 10:18:42	andrey27_sm	Fountain Parks (IOI21_parks)	C++17	15 / 100	123 ms	23208 KiB

parks

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#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
vector<pair<int,int>> cons[200001];
int mask_l[200001];
vector<int> u;
vector<int> v;
vector<int> a;
vector<int> b;
int construct_roads(vector<int> x, vector<int> y) {
  int n = x.size();
  int l = 1e9;
  int r = 0;
  for (int i = 0; i < n; ++i)
  {
    cons[y[i]/2].push_back({x[i],i});
    mask_l[y[i]/2]|=(1<<(x[i]/2-1));
  }
  for (int i = 0; i <= 100000; ++i)
  {
    if(mask_l[i]){
      l = min(l,i);
      r = max(r,i);
      sort(cons[i].begin(), cons[i].end());
    }
  }
  for (int i = l; i <= r; ++i)
  {
    if(i != l and (mask_l[i]&mask_l[i-1]) == 0) return 0;
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:35:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int i = 0;i+1 < cons[l].size();i++){
      |                 ~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30