Submission #638784

#	Time	Username	Problem	Language	Result	Execution time	Memory
638784		penguin133	Self Study (JOI22_ho_t2)	C++14	100 / 100	237 ms	6148 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int __int128
#define pi pair<int, int>
#define pii pair<int, pair<int, int> > 
#define fi first
#define se second
long long n,k;
long long A[300005], B[300005], P[200005];
void solve(){
	cin >> n >> k;
	for(int i=1;i<=n;i++)cin >> A[i];
	for(int i=1;i<=n;i++)cin >> B[i], A[i] = max(A[i], B[i]);
	int s = 0, e = 8e18, ans = s;
	while(s <= e){
		int m = s + (e-s)/2;
		int cnt = 0;
		for(int i=1;i<=n;i++){
			if(A[i]*k < m)cnt -= ((m - A[i] * k + B[i] - 1)/ B[i]);
			else {
				int x = (m + A[i] - 1) / A[i];
				cnt += k - x;
			}
		}
		if(cnt >= 0)ans = m, s = m + 1;
		else e = m - 1;
	}
	cout << (long long)ans;
	
}
 
main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--){
		solve();
	}
}

Compilation message (stderr)

Main.cpp:32:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   32 | main(){
      | ^~~~

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