Submission #640715

#	Time	Username	Problem	Language	Result	Execution time	Memory
640715		peter940324	Self Study (JOI22_ho_t2)	C++17	0 / 100	460 ms	4996 KiB

Main

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

#define int long long 
#define double long double
#define IO ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);

#define pii pair<int,int>
#define ff first
#define ss second
#define mp make_pair

#define pb push_back
#define pf push_front
#define all(x) x.begin(),x.end()

#define de(x) cout << #x << ' ' << x << '\n';
template<class T> void prt(T l,T r){
  while(l!=r) cout << *l << ' ',l++;
  cout << '\n';
}

const int N=3e5+5,M=1e9+7,INF=1e18;

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

int test(int x){
	int cnt=0;
	for(int i=0;i<n;i++){
		if(a[i]>b[i]){
			int y=(x+a[i]-1)/a[i];
			if(y>m){
				y=x-m*a[i];
				cnt+=m+(y+b[i]-1)/b[i];
			}else{
				cnt+=y;
			}
		}else{
			cnt+=(x+b[i]-1)/b[i];
		}
	}
	return cnt<=n*m;
}

signed main(){
  IO
	cin >> n >> m;
	for(int i=0;i<n;i++) cin >> a[i];
	for(int i=0;i<n;i++){
		cin >> b[i];
	}
	int l=0,r=INF+1;
	while(r-l>1){
		int mid=(l+r)/2;
		if(test(mid)){
			l=mid;
		}else{
			r=mid;
		}
	}
	cout << l << '\n';
  return 0;
}

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