Submission #906475

#	Time	Username	Problem	Language	Result	Execution time	Memory
906475		OAleksa	Self Study (JOI22_ho_t2)	C++14	100 / 100	224 ms	11604 KiB

Main

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

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
  	int n, m;
  	cin >> n >> m;
  	vector<int> a(n);
  	for (int i = 0;i < n;i++)	
  		cin >> a[i];
  	vector<int> b(n);
  	for (int i = 0;i < n;i++)
  		cin >> b[i];
  	int l = 0, r = 1e18, ans = 0;
  	auto check = [&](int mid) {
  		int uk = n * m;
  		for (int i = 0;i < n;i++) {
  			int d = 0, t = mid;
  			if (a[i] > b[i]) {
  				int x = min(m, (t + a[i] - 1) / a[i]);
  				t -= x * a[i];
  				d += x;
  			}
  			if (t > 0) 
  				d += (t + b[i] - 1) / b[i];
  			if (d > uk)
  				return false;
  			uk -= d;
  		}
  		return true;
  	};
  	while (l <= r) {
  		int mid = l + (r - l) / 2;
  		if (check(mid)) {
  			ans = mid;
  			l = mid + 1;
  		}
  		else
  			r = mid - 1;
  	}
  	cout << ans << '\n';
	}
  return 0;
}

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