제출 #464583

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
464583	2021-08-13 13:12:08	pikel_rik	Aliens (IOI16_aliens)	C++17	0 / 100	0 ms	204 KiB

aliens

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#include <bits/stdc++.h>
using namespace std;
long long take_photos(int n, int m, int k, vector<int> r, vector<int> l) {
  for (int i = 0; i < n; i++) {
    if (r[i] < l[i]) {
      swap(r[i], l[i]);
    }
  }
  vector<int> ind(n);
  iota(ind.begin(), ind.end(), 0);
  sort(ind.begin(), ind.end(), [&](int i, int j) {
    return l[i] < l[j] || (l[i] == l[j] && r[i] > r[j]);
  });
  int mx = INT_MIN;
  ind.erase(remove_if(ind.begin(), ind.end(), [&](int i) {
    if (r[i] <= mx) {
      return true;
    } else {
      mx = r[i];
      return false;
    }
  }), ind.end());
  int sz = (int) ind.size();
  sort(ind.begin(), ind.end(), [&](int i, int j) {
    return r[i] < r[j];
  });
 
 
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