Submission #1018829

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018829		vjudge1	Self Study (JOI22_ho_t2)	C++17	0 / 100	88 ms	5148 KiB

Main

#include "bits/stdc++.h"
#define int long long
using namespace std;

template <typename _T>
bool chmin(_T &a, const _T &b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template <typename _T>
bool chmax(_T &a, const _T &b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n, m;
	cin >> n >> m;
	vector<int> a(n);
	for(auto &x : a){
	    cin >> x;
	} 
	vector<int> b(n);
	for(auto &x : b){
	    cin >> x;
	} 
	for(int i = 0; i < n; i++){
	    a[i] = max(a[i], b[i]);
	} 
	auto check = [&](int val){
		int cnt = 0;
		for(int i = 0; i < n; i++){
			if(a[i] * m >= val){
			    cnt += ((val - 1) / a[i] + 1);
			} 
			else{
			    cnt += (m + (val - m * a[i] - 1) / b[i] + 1);
			}
		}
		if(cnt <= m * n){
		    return true;
		}
		else return false;
	};
	
	long long l = 0, r = 2e18;
	while(l + 1 != r){
		int mid = (l + r) / 2;
		if(check(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