Submission #864582

#	Time	Username	Problem	Language	Result	Execution time	Memory
864582		NotLinux	Self Study (JOI22_ho_t2)	C++17	100 / 100	202 ms	11572 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
void solve(){
	int n,m;cin >> n >> m;
	int a[n],b[n];
	for(int i = 0;i<n;i++)cin >> a[i];
	for(int i = 0;i<n;i++){
		cin >> b[i];
		a[i] = max(a[i] , b[i]);
	}
	int l = 0 , r = 1ll << 60;
	while(l < r){
		int mid = (l+r)/2;
		int day = 0 , fail = 0;
		for(int i = 0;i<n;i++){
			if(mid <= a[i] * m){
				day += (mid + a[i] - 1) / a[i];
			}
			else {
				day += m + (mid - a[i] * m + b[i] - 1) / b[i];
			}
			if(day > n * m){fail = 1;}
		}
		if(fail)r = mid;
		else l = mid+1;
	}
	cout << l-1 << endl;
}
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	int testcase = 1;//cin >> testcase;
	while(testcase--)solve();
}

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