Submission #756553

#	Time	Username	Problem	Language	Result	Execution time	Memory
756553		michao	Self Study (JOI22_ho_t2)	C++14	100 / 100	314 ms	11464 KiB

Main

#include <bits/stdc++.h>
#define int long long
#define mp make_pair
#define pb push_back
#define ld long double
#define pii pair<int,int>
#define sz(x) (int)x.size()
#define piii pair<pii,pii>
#define precise cout<<fixed<<setprecision(10)
#define st first
#define nd second
#define ins insert
#define vi vector<int>
#define BOOST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
using namespace std;
const int MAX=3e5+5;
const int inf=(int)3e18+9;
int a[MAX],b[MAX];
int n,m;
int gora(int x,int y){
  if (x%y==0)return x/y;
  return x/y+1;
}
bool check(int mid){
  int balans=0;
  for (int i=1;i<=n;i++){
    int wale=max(a[i],b[i]);
    int need=gora(mid,wale);
    if (need<=m){
      balans+=m-need;
    }
    else{
      int sum=mid-wale*m;
      assert(sum>=0LL);
      int odejmij=gora(sum,b[i]);
      if (balans<-inf)return false;
      balans-=odejmij;
    }
  }
  return balans>=0;
}
int32_t main()
{
  BOOST;
  cin>>n>>m;
  for (int i=1;i<=n;i++)cin>>a[i];
  for (int i=1;i<=n;i++)cin>>b[i];
  int ans2=inf;
  if (m==1){
    for (int i=1;i<=n;i++)ans2=min(ans2,max(a[i],b[i]));
  }
  int ip=0,ik=inf;
  while (ip+1<ik){
    int mid=(ip+ik)>>1;
    if (check(mid))ip=mid;
    else ik=mid;
  }
  cout<<ip;
  return 0;
}

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