Submission #520845

#	Time	Username	Problem	Language	Result	Execution time	Memory
520845		Alex_tz307	Exhibition (JOI19_ho_t2)	C++17	100 / 100	71 ms	4408 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

using namespace std;

void testCase() {
  int n, m;
  cin >> n >> m;
  vector<pair<int, int>> a(n);
  for (auto &it : a) {
    cin >> it.second >> it.first;
  }
  sort(a.begin(), a.end());
  vector<int> b(m);
  for (int &x : b) {
    cin >> x;
  }
  sort(b.rbegin(), b.rend());
  int ans = 0;
  for (int x : b) {
    while (!a.empty() && x < a.back().second) {
      a.pop_back();
    }
    if (a.empty()) {
      break;
    }
    ans += 1;
    a.pop_back();
  }
  cout << ans << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int tests = 1;
  for (int tc = 0; tc < tests; ++tc) {
    testCase();
  }
  return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50