Submission #786883

#	Time	Username	Problem	Language	Result	Execution time	Memory
786883		WLZ	Self Study (JOI22_ho_t2)	C++17	0 / 100	279 ms	7360 KiB

Main

#include <bits/stdc++.h>
using namespace std;
 
#define int long long

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<int> a(n), b(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n; i++) cin >> b[i];
  for (int i = 0; i < n; i++) a[i] = max(a[i], b[i]);
 
  auto check = [&](long long k) {
    vector<long long> left(n, k);
    long long weeks_left = (long long) n * m;
    for (int i = 0; i < n; i++) weeks_left -= (k + a[i] - 1) / a[i];
    return weeks_left >= 0;
  };
 
  long long lo = 0, hi = (long long) 2e18;
  while (lo < hi) {
    long long mid = (lo + hi + 1) / 2;
    if (check(mid)) lo = mid;
    else hi = mid - 1;
  }
  cout << lo << '\n';
  return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9