Submission #923029

#	Time	Username	Problem	Language	Result	Execution time	Memory
923029		ting39	Self Study (JOI22_ho_t2)	C++17	0 / 100	354 ms	10836 KiB

Main

#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,m;
vector<int> a,b;
int dv(int x,int y){
	if(x<=0) return 0;
	if(y*(x/y)==x) return x/y;
	else return x/y+1;
}
bool check(int x){
	int emp=0,ext=0;
	for(int i=0;i<n;i++){
		if(x<=m*a[i]) emp+=dv(x,a[i]);
		else{
			ext+=dv(x-m*a[i],b[i]);
			emp+=m;
		}
	}//cout<<x<<' '<<ext<<' '<<emp<<' '<<n*m<<endl;
	return n*m>=ext+emp;
}
signed main(){
	cin>>n>>m;
	a.resize(n);
	b.resize(n);
	for(int &i:a) cin>>i;
	for(int i=0;i<n;i++){
		cin>>b[i];
		a[i]=max(a[i],b[i]);
	}
	int l=0,r=1e18+100,mid;
	while(r-l>1){
		mid=(l+r)/2;
		if(check(mid)) l=mid;
		else r=mid;
	}
	cout<<l<<endl;
}

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