Submission #923032

#	Time	Username	Problem	Language	Result	Execution time	Memory
923032		ting39	Self Study (JOI22_ho_t2)	C++17	62 / 100	452 ms	11628 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||y*(x/y)==x) return x/y;
	else return x/y+1;
}
bool check(int x){
	int all=0;
	for(int i=0;i<n;i++){
		int emp=0,ext=0;
		all+=min(dv(x,a[i]),m);
		all+=max(dv(x-m*a[i],b[i]),0LL);
		if(n*m<all) return 0;
	}
	return 1;
}
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,mid;
	while(r-l>1){
		mid=(l+r)/2;
		if(check(mid)) l=mid;
		else r=mid;
	}
	cout<<l<<endl;
}

Compilation message (stderr)

Main.cpp: In function 'bool check(long long int)':
Main.cpp:13:7: warning: unused variable 'emp' [-Wunused-variable]
   13 |   int emp=0,ext=0;
      |       ^~~
Main.cpp:13:13: warning: unused variable 'ext' [-Wunused-variable]
   13 |   int emp=0,ext=0;
      |             ^~~

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