Submission #1320000

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320000		ghos007	Self Study (JOI22_ho_t2)	C++20	0 / 100	136 ms	5120 KiB

Main

//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int INF = 1e18;
const int mod = 1e9+7;
bool check(vector <int> &A,vector <int> &B,int mid,int m) {
  int balance = 0;
  for (int i = 0; i < A.size(); i++) {
    int need_time = (mid + A[i] - 1) / A[i];
    if (m >= need_time) {
      balance += (m - need_time);
    }else {
      int ost = mid - A[i] * m;
      balance -= (ost + B[i] - 1) / B[i];
    }
  }
  return balance >= 0;
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n,m;
  cin >> n >> m;
  vector <int> A(n),B(n);
  for (int i = 0;i < n;i++) {
    cin >> A[i];
  }
  int res = INF;
  for (int i = 0;i < n;i++) {
    cin >> B[i];
    A[i] = max(A[i],B[i]);
    res = min(res,A[i]);
  }
  int l = 0,r = 1e18 + 1;
  while (r-l>1) {
    int mid = l + (r-l)/2;
    if (check(A,B,mid,m)) {
      l = mid;
    }else {
      r = mid;
    }
  }
  if (res > l)abort();
  cout << l << "\n";
}

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