Submission #925407

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
925407	2024-02-11 14:52:27	Itamar	Fountain Parks (IOI21_parks)	C++17	45 / 100	1057 ms	115332 KiB

parks

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using namespace std;
#include <vector>
#include "parks.h"
#include <map>
#define pi pair<int,int>
#define vi vector<int>
const int siz = 2e5 + 2;
map<pi, int> m;
int my[siz];
vi col[siz];
#include <set>
bool con(int a, int b) {
  if (my[a] == my[b])return 0;
  a = my[a], b = my[b];
  if (col[a].size() > col[b].size())swap(a, b);
  for (int x : col[a]) {
    my[x] = b;
    col[b].push_back(x);
  }
  return 1;
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
  int n = x.size();
  for (int i = 0; i < n; i++) {
    m[{x[i], y[i]}] = i + 1;
  }
  vector<pi> ed1, ed2;
  for (int i = 0; i < n; i++) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:42:19: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |  if (ans.size()+1 < n )return 0;
      |      ~~~~~~~~~~~~~^~~

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