Submission #1149837

#	Time	Username	Problem	Language	Result	Execution time	Memory
1149837		henriess	Self Study (JOI22_ho_t2)	C++20	54 / 100	149 ms	7492 KiB

Main

#include <bits/stdc++.h>
using namespace std;
vector<unsigned long long> highest;
unsigned long long n,m;
vector<unsigned long long> A;
vector<unsigned long long> B;
bool check(unsigned long long mid){
	unsigned long long ret = 0;
	for(int i = 0;i<n;i++){
		if (B[i] > A[i]){
			unsigned long long temp = (mid+B[i]-1) / B[i];
			ret += temp;
		}
		else{
			
			unsigned long long rem = (mid+A[i]-1) / A[i];
			rem = min(rem,m);
			unsigned long long attend = rem * A[i];
			unsigned long long temp = (mid - attend + B[i] - 1) / B[i];
			ret += rem + temp;
		}
	}
	return ret <= n * m;
}
void bsta(){
	unsigned long long lb = 0;
	unsigned long long ub = 1e18;
	unsigned long long mid = -1;
	unsigned 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);
    highest.resize(n,0);
    for(int i = 0;i<n;i++){
		cin >> A[i];
		highest[i] = max(highest[i],A[i]);
	}
	for(int i = 0;i<n;i++){
		cin >> B[i];
		highest[i] = max(highest[i],B[i]);
	}
	bsta();
	
}

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