Submission #886946

#	Time	Username	Problem	Language	Result	Execution time	Memory
886946		stefanneagu	Self Study (JOI22_ho_t2)	C++17	0 / 100	426 ms	11088 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;
    if(a[i] <= b[i]) {
      // cout << "e mai mare b-ul, deci folosim ";
      int cntn = 0;
      cnt += nrm / b[i];
      cntn += nrm / b[i];
      if(nrm % b[i] != 0) {
        cnt ++;
        cntn ++;
      }
      // cout << cntn << endl << endl;
    } else {
      // cout << "e mai mare a-ul, deci folosim ";
      int nrai = nrm / a[i];
      if(nrm % a[i] != 0) {
        nrai ++;
      }
      // 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 << cntn << endl << 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];
  }
  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