Submission #635768

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
635768	2022-08-26 20:51:03	null_awe	Stranded Far From Home (BOI22_island)	C++14	100 / 100	495 ms	39264 KiB

island

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
vector<vector<int>> w;
vector<ll> vals;
vector<int> r, p;
int find(int a) { return a == p[a] ? a : p[a] = find(p[a]); }
void link(int a, int b) {
  a = find(a), b = find(b);
  if (a == b) return;
  if (r[a] < r[b]) swap(a, b);
  if (r[a] == r[b]) ++r[a];
  p[b] = a;
}
int main() {
  int n, m; cin >> n >> m;
  vector<int> arr(n); for (int i = 0; i < n; ++i) cin >> arr[i];
  set<int> nums; for (int num : arr) nums.insert(num);
  vector<int> copy(nums.begin(), nums.end());
  vector<vector<pii>> edges(copy.size());
  for (int i = 0; i < m; ++i) {
    int a, b; cin >> a >> b; --a, --b;
    edges[lower_bound(copy.begin(), copy.end(), max(arr[a], arr[b])) - copy.begin()].push_back({a, b});
  }
 
 
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Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:33:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |   for (int i = 0; i < copy.size(); ++i) {
      |                   ~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35