Submission #886967

#	Time	Username	Problem	Language	Result	Execution time	Memory
886967		stefanneagu	Self Study (JOI22_ho_t2)	C++17	0 / 100	436 ms	8276 KiB

Main

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

const int nmax = 3e5 + 1;

int a[nmax], b[nmax], n, m;

bool check(int nrm) {
  int cnt = 0;
  for(int i = 1; i <= n; i ++) {
    //cout << "Suntem la " << i << endl;
    int nrai = nrm / a[i];
    if(nrm % a[i] != 0) {
      nrai ++;
      //cout << "uWu(" << a[i] << " " << nrm << ") ";
    }
    // cout << " nrai = " << nrai << " si al final ";
    int cntn = 0;
    if(nrai <= m) {
      cnt += nrai;
      cntn += nrai;
    } else {
      nrai = m;
      int rm = nrm - a[i] * nrai;
      cnt += rm / b[i];
      cnt += nrai;
      cntn += rm / b[i];
      cntn += nrai;
      if(rm % b[i] != 0) {
        cnt ++;
        cntn ++;
      }
    }
    //cout << "Cnt: " << cntn << endl;
  }
  // cout << "Cnt final: " << cnt << endl;
  return (cnt <= n * m);
}

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  cin >> n >> m;
  for(int i = 1; i <= n; i ++) {
    cin >> a[i];
  }
  for(int i = 1; i <= n; i ++) {
    cin >> b[i];
    a[i] = max(a[i], b[i]);
  }
  int l = 0, r = 1e18, ans = 0;
  while(l <= r) {
    int mid = (l + r) / 2;
    if(check(mid) == true) {
      ans = mid;
      l = mid + 1;
    } else {
      r = mid - 1;
    }
  }
  cout << ans;
  return 0;
}

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