Submission #1149840

#	Time	Username	Problem	Language	Result	Execution time	Memory
1149840		henriess	Self Study (JOI22_ho_t2)	C++20	0 / 100	0 ms	324 KiB

Main

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

long long n,m;
vector<long long> A;
vector<long long> B;
bool check(long long mid){
	long long ret = 0;
	for(int i = 0;i<n;i++){
		if (B[i] > A[i]){
			long long temp = (mid+B[i]-1) / B[i];
			ret += temp;
		}
		else{
			
			long long rem = (mid+A[i]-1) / A[i];
			if (rem > m){
				ret = m;
			}
			
			long long attend = rem * A[i];
			long long temp = (mid - attend + B[i] - 1) / B[i];
			ret += rem + temp;
			if (ret > n*m){
				return false;
			}
		}
	}
	return ret <= n * m;
}
void bsta(){
	long long lb = 0;
	long long ub = 1e18;
	long long mid = -1;
	long long ans = -1;
	while (lb <= ub){
		mid = (lb + ub) / 2;
		if (check(mid)){
			ans = mid;
			lb = mid + 1;
		}
		else{
			ub = mid - 1;
		}
	}
	cout << ans;
}

int main() {
	
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    A.resize(n);
    B.resize(n);

    for(int i = 0;i<n;i++){
		cin >> A[i];
		
	}
	for(int i = 0;i<n;i++){
		cin >> B[i];

	}
	bsta();
	
}

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